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GENEALOGY OF BEHAVIOURIST PEACE RESEARCH

Ricardo Real P. Sousa

ricardorps2000@yahoo.com

Assistant Professor at Autonomous University of Lisbon (Portugal) and integrated researcher at

OBSERVARE. He has a PhD from the International Institute of Social Studies (ISS) Erasmus

University of Rotterdam (EUR) in the Netherlands. He was part of the Research School in Peace

and Conflict (PRIO / NTNU / UiO) in Norway and associated with the Center of International

Studies (CEI) Lisbon University Institute (IUL) in Portugal as a researcher on conflict. He has a

Master of Science in Development Studies from the School of Oriental and African Studies

(SOAS) of the University of London, a post-graduation diploma of advanced studies in African

Studies and a Bachelor (Hons) degree in Business Administration, both from the Lisbon

University Institute.

Abstract

This paper presents the behaviourist “non-normative” Peace Research (PR) tradition with two

objectives. One objective is to locate this field in relation to closely related fields of research.

PR specificity is: the dependent variable of peace and conflict when compared with Political

Science and International Relations; the normative concern with the causes of war when

compared with Strategic Studies; and the rejection of the “practicality” of research and a

restraint on normativity when compared with Peace Studies (defined as peace research, peace

teaching and peace action) and Conflict Resolution. Also, PR is considered here as one of the

sub-fields of International Security Studies. The second objective of the paper is to present

the history of PR. Since its creation in the 1950s, with a focus on inter-state conflict as an

alternative to Strategic Studies, PR had two defining periods: one in the late 1960s labelled

as the “socialist revolution”, with the conceptualisation of peace as more than the absence of

war (positive peace) and a challenge for normativity in research; and a second period in the

1980s that brought the broadening of the referent object to intra-state conflict and liberal

peace, and the emergence of other social sciences dedicated to the study of issues in, or close

to, PR, broadly defined as security with some of them adopting a normative stance in research.

The epistemological community of PR kept its behaviourist approach in spite of these two

normative challenges, and its distinctiveness and unity is much due to its method.

Keywords

Normativity; Peace Studies; Peace and Conflict Studies

How to cite this article

Sousa, Ricardo Real P. (2017). "Genealogy of behaviourist peace research". JANUS.NET e-

journal of International Relations, Vol. 8, Nº. 1, May-October 2017. Consulted [online] on the

date of last consultation, http://hdl.handle.net/11144/3030

Article received on December 12, 2016 and accepted for publication on February 26,

2017

JANUS.NET, e-journal of International Relations

e-ISSN: 1647-7251

Vol. 8, Nº. 1 (May-October 2017), pp. 1-22

Genealogy of behaviourist peace research

Ricardo Real P. Sousa

GENEALOGY OF BEHAVIOURIST PEACE RESEARCH

Ricardo Real P. Sousa

Introduction

This paper presents more than 60 years of Peace Research (PR) evolution and has two

main objectives. The first objective is to identify major changes to what PR studies and

how it is studied. This is done with reference to the behaviourist PR approach, which is

considered as the backbone of this paper.

We share King et al.’s (1994) perspective that

the characteristics of good research include: making descriptive or explanatory

inferences on the basis of empirical information; research that uses explicit, codified and

public methods to generate and analyse data whose reliability can be assessed;

qualitative and quantitative methods that are necessarily imperfect and, therefore, the

conclusions are uncertain; and the “unity of all sciences consists alone in its method,

not in its material” (Pearson, 1892, p. 16). These characteristics minimise the normative

bias or influences of the researcher on knowledge.

There are three defining periods in PR.

PR starts in the late 1950s in the aftermath of

the behaviourist revolution that is characterised by a focus on the causes of inter-state

violent conflict (deadly conflict normally associated with war) researched through

behaviourist approaches, with the predominance of Political Science.

In the late 1960s peace is conceptualised as more than just the absence of war by

distinguishing between war (violent conflict), negative peace (the absence of violent

conflict, but where non-violent conflict is present) and positive peace (the removal of

structural or cultural violence, absence of violent and non-violent conflict with non-violent

means of conflict resolution) (Galtung J. , Violence, Peace and Peace Research, 1969).

This is a period with a predominance of Political Science and Economy where there is a

claim for the use of normative approaches in what has been labelled the “socialist

revolution” (from 1968 to 1978) (Gleditsch N. P., 2008).

The English review of this article was funded by national funds through FCT - Fundação para a Ciência e

a Tecnologia - as part of OBSERVARE project with the reference UID/CPO/04155/2013, with the aim of

publishing Janus.net. Text review by Thomas Rickard.

I would like to thank comments by Luís Moita, Carlos Branco and two anonymous referees; any remaining

errors are my own. The term “genealogy” in this article refers to the study of the origins and development

of Peace Research and is not used in the sense that Michel Foucault uses it, which is as a historical approach

to research with an underlying critique of the present.

See David Easton (1965) for a classical definition of the behaviouralists approach.

Gledistch (2008) identifies four periods in PR: the pre-history before 1959; the behavioural revolution

between 1959 and 1968; the socialist revolution between 1968 and 1978; the wilderness years between

1979 and 1989; the post-Cold War years and liberal peace; and a question mark on the topic of the “clash

of civilizations” since 2001.

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Ricardo Real P. Sousa

In the late 1980s PR broadens its focus to intra-state conflict and liberal peace and is

challenged by a set of new disciplines that study peace and conflict and more broadly

defined security through different ontological and epistemological approaches. Broadly

speaking, from the 1980s onwards a distinction can be made between the behaviourist

PR committed to rationalism and positivism and the new disciplines following reflectivism

and post-positivism. In this period PR is multidisciplinary.

Table 1: Periods of Peace Research

Late 1950s–

late 1960s

Late 1960s–late 1980s

Late 1980s onwards

What is

studied

(dependent

variable)

Inter-state

(nuclear)

conflict

Inter-state

conflict

Positive and

Negative

Peace and

structural

violence

Inter- and

intra-state

conflict

Liberal

Peace

How it is

studied

(method of

research)

Behaviourist

and

Normative

Rationalist

Positivist

(behaviourist)

Disciplines

Political

Science

Political Science and

Economics

Multidisciplinary

The second objective of the paper is to identify the main characteristics of PR vis a vis

closely related fields. PR is considered distinct from Political Science and International

Relations (IR) due to its exclusive focus on the dependent variable of peace and conflict.

The main distinction between PR and Strategic Studies is the former’s normative

concern

with the causes of war. PR’s distinction from Peace Studies and Conflict Resolution is its

restraint on the “practicality” and normativity of research. Finally PR is considered as one

of the sub-fields of International Security Studies (ISS).

The article starts by identifying PR’s distinction in relation to other fields, then each of

the three periods of PR identified in Table 1 are presented. The article concludes with a

brief overview of the contemporary focus of research in PR.

Positioning Peace Research

The academic boundaries of PR are not easily drawn, especially in relation to closely

related areas of research: Political Science, International Relations, International Security

Studies, Strategic Studies, Peace Studies and Conflict Resolution.

The dependent variable is the phenomenon being under research that is “dependent” on other factors to

explain it – the independent variable(s).

This normativity (values the researcher brings to the research) occurs at the level of selecting the research

question and not in the research method, which is neutral. In this way it is different from the normativity

of the “socialist revolution” or of post-positivism and reflectivism, as presented ahead in the paper, which

are more critical and reflective with researchers identifying values and preferences in research questions as

well as research methods.

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Picture 1: Positioning Peace and Conflict Studies

Political Science is a core discipline with a focus on politics: the exercise of power within

and by the state. But it is with its sub-discipline of IR – also referred to as International

Politics – that the first academic discipline is created in order to systematically study the

exercise of power between states, in particular the causes of conflict and prospects of

peace. The Woodrow Wilson chair of International Politics created in 1919 is a landmark

reference in the establishment of IR as an academic discipline. PR is an offspring of IR

that emerges in the 1950s as an alternative way of thinking to the dominant field of

Strategic Studies.

Political Science, IR and PR are multidisciplinary, have common epistemological

approaches, recognise agency for both state and non-state actors, can use the same

levels of analysis (micro, macro, meso levels) and share similar issue areas (economics

and politics, global governance, terrorism, international organisations, among others).

The main distinctive feature of PR in relation to Political Science and IR is that peace and

conflict is a main dependent variable, even if it has different conceptualisations and

proxies for peace and conflict. In Political Science and IR there can be other dependent

variables, such as finance and economics, development, sustainability, environment,

justice, ethics, civil society or democracy. An additional distinction is that Political Science

deals primarily with intra-state processes and IR deals primarily with inter-state

processes, while PR deals with both.

The scope of the two leading journals in PR are illustrative of this focus. The American-

based Journal of Conflict Resolution (JCR) calls for papers on “the causes of and solutions

to the full range of human conflict . . . [with a focus on] conflict between states and

within states, but also explores a variety of inter-group and interpersonal conflicts that

may help in understanding problems of war and peace.”

The European-based Journal of

Peace Research (JPR) has “a global focus on conflict and peace-making . . . [and]

encourages a wide conception of peace, but focuses on the causes of violence and conflict

resolution”.

Strategic Studies became institutionalised post-Second World War based on the classical

realist approach of war studies, military strategy and geopolitics. The main actor is the

Because PS and CR share the questions that structure ISS (see below) they are represented as part of ISS.

See Viotti and Kauppi (2012) and Dunne et al. (2013) for reviews of IR theories.

http://jcr.sagepub.com/ consulted on September 5, 2016.

http://jpr.sagepub.com/ consulted on September 5, 2016.

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state and the statesman primary objective is to secure the survival of the state – state

sovereignty - which is pursued through diplomatic or military means. The main threat to

the state is not internal but external and is a result of the fact that states live in an

anarchical world system characterised by the absence of a supra-national authority to

regulate the conflicting interests of states.

At its inception, PR shared many characteristics of Strategic Studies, in particular its

focus on inter-state conflict and the use of a behaviourist approach. The main distinction

between the two is the different normative underpinnings. Strategic Studies dealt with

the issue of achieving victory or avoiding defeat mainly through the use of military force,

while PR deals with the issue of identifying the causes of conflict.

In the early days of

PR its focus on peace per se is influenced by Marxist concerns with structural social

injustice, but it would later become primarily characterised by influences from liberal

traditions and democratic peace theory.

Table 2: Peace research and related traditions

Strategic Studies

(1950s onwards)

Peace Studies

(1970s onwards)

Other social

sciences

(1980s onwards)

Game theory, formal

models, mathematics

Mainly economics and

politics but also other

social sciences

Conventional

constructivism from

the 1980s onwards

Sociology,

psychology,

anthropology,

politics, economics,

conflict resolution,

trans-disciplinary

Critical

constructivism, the

Copenhagen School,

critical studies,

feminism, human

security, strategic

studies, post-

colonialism,

postructuralism

How to win or not

lose a war?

What are the causes

of war?

How to transform war

into positive peace

through research,

teaching and action?

What forms of power

relations exist (and

how to overcome

them)?

Non-normative, positivist, rationalist

Normative, post-

positivist, reflectivist,

participative action

research

Normative, post-

positivist, reflectivist,

Focus on explaining the phenomenon in order

to be able to predict and control it

Focus on understanding or reconstruction of

the phenomena, its critique and

transformation, and restitution and

emancipation.

ISS (or security studies) is a sub-field of IR that emerged after the Second World War

and is characterised by three novelties: a conceptual shift from war and defence to

security (broadening the set of relevant political issues); a concern with Cold War issues

and in particular nuclear weapons; and the relevance of civilian expertise (physicists,

economists, sociologists or psychologists) in studies of war. During the first decades of

the Cold War ISS could be distinguished from IR by its focus on the use of force in

international relations as consubstantiated in the field of Strategic Studies. From the late

1960s onwards the agenda of ISS broadens and security increasingly becomes not only

about politics and the military – the “use of force” – but also about economics, the

For this reason, it is called “Peace Research” instead of “Peace and Conflict Research”.

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environment and society. ISS’ main distinction from IR becomes its focus on the concept

of international security (Buzan and Hansen, 2009).

Buzan and Hansen (2009) identify four question that structure ISS: whether to privilege

the state as the referent object; whether to include internal as well as external threats;

whether to expand security beyond the military sector and the use of force; and whether

to see security as inextricably tied to a dynamic of threats, dangers and urgency. All

these concerns are closely matched with the concerns of PR. Defined this way, ISS is an

“umbrella label to include work of scholars who might refer to themselves as being in . .

. ‘peace research’, or various other specialised labels” (Buzan and Hansen, 2009: 1).

Therefore, PR is a sub-field of ISS alongside other approaches to security.

PR is also intrinsically conceptualised and associated with peace action and peace

education, a triad referred to as Peace Studies (PS). PS is defined as related to

the human condition in general, concerned with our fulfilment... as

humans through positive peace, and the reduction of suffering...

through negative peace, regardless of how the causal chains or

circles and spirals, or what not, spin or weave their ways through

the human manifold (Galtung J. , 2010, p. 24).

PS can be characterised by: transdisciplinarity in integrating different disciplines of social

sciences (for instances sociology, psychology sociology, political science, economics);

trans-level by relating micro, meso, macro, mega levels of analysis; trans-border, where

no geographical region or system should dominate; empirical but equally critical and

constructive in solutions; and practical, implemented by scholars and practitioners

(Galtung J. , 2010; Galtung J. , 2008).

PS’ origins can be symbolically associated with the ground-breaking work of its “father”,

Johan Galtung, which was started in 1958. But normative work on peace and its

promotion precede this decade, particularly within religiously inspired scholarly work and

action.

PS scholars and practitioners engage in experiential, participative action research that

“affirms the primary value of practical knowing in the service of human flourishing”

(Heron & Reason, 1997, p. 1) and they have a compromise with transformative

emancipatory action for the realisation of human potential. Emancipatory action follows

a non-violent approach, either in the form of principled pacifism such as with Mahatma

Gandhi and Martin Luther King, or in the form of pragmatic pacifism as identified in Gene

Sharp (1971) (Oliveira, 2016).

The aims and scope of the journal of Peace and Change are illustrative of the focus of

PS:

Two of the organizations that combine at least two corners of the research triad, teaching and action

(consultancy), are TRANSCEND (the Transnational Foundation for Peace and Future Research), founded by

Johan Galtung, and INCORE (the International Conflict Research Institute).

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Peace and Change publishes scholarly and interpretive articles on

the achievement of a peaceful, just, and humane society.

International and interdisciplinary in focus, the journal bridges the

gap between peace researchers, educators, and activists. It

publishes articles on a wide range of peace-related topics, including

peace movements and activism, conflict resolution, nonviolence,

internationalism, race and gender issues, cross-cultural studies,

economic development, the legacy of imperialism, and the post-Cold

War upheaval.

Some scholars would consider Conflict Resolution (CR) as a sub-field of PS. Generally

speaking PR, PS and CR share the normative commitment that solutions to the causes of

conflict are to be found through non-violent means – “peace by peaceful means”.

Therefore, conflict, and particularly violent conflict, is considered the malady to be

eradicated, both as an end and as a means.

CR as a field of study started around the same period as ISS and PR. In the 1950s and

1960s scholars start studying conflict as a specific phenomenon in international relations,

domestic politics, industrial relations, communities and families and individuals.

Research or practice in CR is conducted by, or is much closer to, the actual actors of the

political process – very often in long problem-solving workshops or mediation initiatives.

Since its inception CR has been defined as: multilevel; multidisciplinary, multicultural,

analytical and normative as well as theoretical and practical (Ramsbotham, Woodhouse,

& Miall, 2011).

The practical and normative foundations of PS and CR for the transformation of war into

sustainable peace are in tension with behaviourist academic considerations over scientific

method. Peace and conflict scholars would also become split over these issues in the

“socialist revolution”. Behaviourist PR scholars recognise that academic research should

be relevant to world affairs, but at the same time that knowledge can only be reached

following specific scientific requirements that guarantee objectivity and cannot be

compromised by the practicability or applicability of knowledge. Generally speaking,

these scholars focus on identifying the causes of war firstly as a contribution to knowledge

and only after with a concern for its subsequent use in public policy. In the early years

of the JPR there was a requirement for articles to have a final section with policy

recommendations, but the requirement was soon abandoned because the policy

produced had little relevance when considering that it was not the focus of the article but

a sub-product (Wiberg, 2005). Also, behaviourist PR scholars consider that normative

considerations over what is good and bad should be circumscribed – if considered at all

– to the choice of subject (the research question) and that the research process should

be neutral to political influences. Finally, PR scholars opt for a multidisciplinary that

follows the established scientific methods of research of each discipline instead of the

transdisciplinarity advocated in PS.

http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1468-0130/homepage/ProductInformation.html,

accessed September 27, 2016. The journal Peace and Conflict Studies is also defined along the same lines

as the definition of Peace Studies.

For an account of CR’s evolution see Kriesberg (2009) and Ramsbotham, Woodhouse and Miall (2011).

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Normative PS and CR scholars (and practitioners) consider that one can never be

politically neutral and value judgements over what is good and bad underpin not only the

research question but also permeate through the research process. Because researchers

are bound to have values, they have some individual responsibility for the practical

implications of the research. Therefore, the researcher is morally bound to be practical,

which may mean engaging in policy prescriptions and, in some cases, policy

implementation.

It is this normativity and concern with research applicability or practicality that most

distinguishes PS and CR from PR. See Table 3 for a resume of the distinctiveness of PR.

Table 3: Distinctiveness of Peace Research vis a vis other approaches

Peace

research

Political

Science/

International

Relations

Strategic

Studies

International

Security

Studies

Peace

Studies

Conflict

Research

What it studies:

Peace and Conflict

⨯

⨰

⨯

Other focus

⨯

How it is studied:

Neutral/objective

⨯

Normative/subjective

⨯

Practice

⨯

Note: Neutral/objective refers to the focus of the research on “how things are”.

Normative/subjective refers to the focus of “how things should be”. Underlined crosses

identify the distinctiveness of the approach in relation to PR. For Strategic Studies the

underlined cross with a dot in “Peace and Conflict” refers to different concerns about the

same dependent variable. We follow Buzan and Hansen (2009) characterisation of ISS.

Late 1950s to late 1960s

PR’s inception is associated with the development of an epistemological community of

scholars, in both the US and Europe, which systematically studied peace and conflict

through a behaviouralist approach.

By the 1950s and 1960s the behaviouralist approach had enough advocates for it to be

considered that a “second great debate” within IR was occurring, which opposed

“traditionalist” and “behaviouralist” approaches.

Traditional scholars followed the approach of classical political philosophy based on

historical interpretations, legal philosophy or theories of causality related to unobservable

dynamics of human nature. Scholars are considered as inevitably normative in research,

used mainly qualitative methods and there was no requirement for theories to be

validated by empirical evidence.

Behaviouralist scholars defended a more objective, neutral (non-normative) and

empirical research that could rationally account for the “observed” behaviour of states

(or other actors). They defended the adoption of methodologies from the natural

sciences, in particular its focus on hard theory, quantification and identification of

The main references of the debate are the critique of behaviourism by Bull (1966) and its defense by Kaplan

(1966).

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causality. This was considered as the “scientific” revolution, which gained expression in

realist and liberal IR traditions as well as in PR.

One of the theoretical developments of the behaviourist approach was to conceptualise

three levels of analysis to identify the causes of war: the individual, the national state

and the international system (Waltz K. N., 1959; Singer, 1961).

The individual level focuses primarily on human nature and on

individual political leaders and their belief systems, psychological

processes, emotional states and personalities. The nation-state (or

national) level includes factors such as the type of political system

(authoritarian or democratic, and variations of each), the structure

of the economy, the nature of the policymaking process, the role of

public opinion and interest groups, ethnicity and nationalism, and

political culture and ideology. The system level includes the anarchic

structure of the international system, the distribution of military and

economic power among leading states in the system, patterns of

military alliances and international trade, and other factors that

constitute the external environment common to all states (Levys,

2011, p. 14).

The PR epistemological community was mainly Western (North America, West Europe

and Japan) with the two most significant initiatives coming out of Michigan in the United

States and Oslo in Norway.

At the University of Michigan in the United States Kenneth Boulding and a group of

academics founded in 1957 the multidisciplinary, empirically focused, Journal of Conflict

Resolution,

started in 1959 the Centre for Research on Conflict Resolution; and in 1964

the Correlates of War (COW) project started, headed by J. David Singer and Melvin Small,

which begins to systematically collect data on inter-state and extra-systemic conflict.

The COW project would set the standards for much of the empirical work in the area of

conflict developed ever since.

In Oslo, Norway, the Peace Research Institute Oslo is established in 1959 and the Journal

of Peace Research is founded in 1962. Johan Galtung was an instrumental founder of

both and his work in the 1960s would conceptualise “peace” in a way that can be

considered to have led to the first challenge in PR and the birth of PS.

The choice of “conflict” in Michigan and “peace” in Oslo reflects the controversy

surrounding the word “peace”. Not only were “Peace” movements seen, at the time, as

upholding Soviet interests, but “peace” also was perceived as detached from the “hard

For a more complete review of the emergence of institutional initiatives in this field see Buzan and Hanse

(2009).

Emanating out of the Center for Advanced Studies in Behavioural Sciences established in Stanford in 1954.

From 1971 onward the journal is based at Yale University.

The interstate datasets are first published in 1972. Previous work collecting quantitative data on conflict

had relied mostly on individual initiatives such as Sorokin (1937), Wright (1942) or Richardson (1960).

Extra-systemic conflicts refer to colonial wars of independence.

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politics” of conflicts. Institutes established ever since would opt for a focus on peace

and/or conflict, often reflected in their designation.

Late 1960s to late 1980s

In 1969 Johan Galtung redefined the concept of positive and negative peace (proposed

in 1964), introducing the distinctive concept of structural violence. Negative peace is

defined as the cessation of direct violence (war resulting from violent conflict by actors),

while positive peace is defined as the removal of “structural violence” – a concept close

to social injustice where violence is not actor oriented but resulting from the structure of

the social system. Initially focused on economic inequality, structural violence would also

come to be associated with violence in social and cultural systems. Furthermore,

achieving positive peace does not mean only the cessation of conflict but also the

management of conflict through non-violent means.

Table 4: Negative and Positive Peace and War

Positive Peace

Negative Peace

War

Non-violent conflict

Violent conflict

Social Justice

Structural violence

Direct violence

Source: Based on Pfetsch and Rohloff (2000, p. 382)

This is a significant conceptual shift from the traditional focus on conflict to a focus on

the conditions of peace. The referent object is changed to human collectivities (instead

of states), allowing for an analysis of conflicts not only at the inter-state level but also at

the intra-state and trans-state level. Also, it focuses not only on the military sector as a

source of violence but also on economic sectors. This conceptualisation establishes a link

between the classical liberal idealist tradition and the Marxist tradition (Buzan & Hansen,

2009) and has been labelled as the “socialist revolution” in PR (Gleditsch N. P., 2008).

The concept of negative peace is criticised for still being defined in relation to conflict (as

the negation of conflict) and for being of a less urgent character than war. While the

concept of “structural violence” in positive peace is criticised for being too broad and

loosely defined (Boulding, 1977).

The concept of structural violence was “an academic tool to shift focus away from the

exclusive attention given to East-West conflict towards North-South conflict.” (Gleditsch,

Nordkvelle, & Strand, 2014, p. 148). This reflected shifting concerns in Europe where

post-Second World War concerns with economic reconstruction and growth were followed

in the 1960s by concerns over justice, autonomy and equality, also in relation to the

post-colonial world (Kriesberg, 2009). This political period, sometimes referred to as

“1968”, is characterised by the US war in Vietnam, the USSR invasion of Czechoslovakia

and civil society movements – in particular student protests in the US, Europe and some

Eastern European countries (Wiberg, 2005).

The scholarship following this approach was mainly located in Europe, labelled as the

maximalist or structuralist European approach, and some work would go into the

The concept of structural violence would be applied in several areas: development studies, imperialism,

domestic conflict, environment, human rights and economic exploitation (Buzan & Hansen, 2009).

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operationalisation of “structural violence” for empirical and statistical validation, among

them Wallesteen’s (1973) research relating trade structures with war structures (Wiberg,

2005). In North America, scholars maintained a focus on studying (the causes of) war,

labelled as the pragmatist approach.

The broadening of the referent object would be reflected in the JCR and JPR. The JCR

enlarges its focus in 1973 to not only deal with interstate war and nuclear (deterrence

and disarmament) issues but also justice, equality, human dignity, ecological balance

and intrastate conflict (Russett & Kramer, 1973). In the JPR, structural violence and

positive peace would gain a significant expression in the 1970s and 1980s (Gleditsch,

Nordkvelle, & Strand, 2014).

Structural violence was also an epistemological shift by Galtung, abandoning the initial

non-normative, behavioural and empiricist “invariance seeking” orientation, concerned

with “what reality is” (adopted until 1958), in favour of a normatively oriented “invariance

breaking” research, concerned with the search for another reality - “the potential”. In

structural violence, violence is defined as the cause of the difference between “the

potential and the actual, between what could have been and what is” (Galtung J. , 1969,

p. 168). This normative commitment anticipates the new epistemological approaches

that emerge in the 1980s with reflectivism and post-positivism, and it particularly

influenced feminist studies and critical theory (Pureza, 2011).

This epistemological change occurs in the context of a plural-peace activist movement,

that is some groups influenced by Marxism (mostly of a Maoism inclination), which

considered the neutral tone of behavioural science unacceptable (Gleditsch, Nordkvelle,

& Strand, 2014). By the end of the 1960s, peace activists would be divided not only in

methodological issues but also in substantive positions. Some peace researchers and

idealists recognised the legitimacy of Soviet concerns while traditional IR and PR scholars

focused on the maintenance of liberal democracies. In both Europe and the United States,

a debate emerged over the possible use of overt conflict in situations when marginalised

groups challenge the status quo in search for a more just and lasting peace following the

revolutionary Marxism-Leninism (Rogers & Ramsbotham, 1999). For some the use of

violence was in contradiction with what PR meant – that is the transformation of war into

non-violent political processes – even if only reaching a “negative peace”. North-South

structural violence was the non-violent emancipatory compromise proposed in this

debate, a characteristic of the evolutionary Marxism of social democracy.

The normative challenge would divide peace and conflict researchers to this day into two

epistemological communities with little cross-fertilisation. “Non-normative” positivist

researchers (following the behaviourist tradition) – here defined under the umbrella of

PR – are more associated with the Peace Science Society (founded in 1963 by Walter

Isard) in the United States and the International Studies Association and journals like

the JCR and JPR.

More normative researchers and activists, here defined in the umbrella of PS, are

associated with International Peace Research Association (established in 1965) and

journals like Peace and Change, Peace Review or the Journal of Social Justice.

For more details see Schmid (1968).

The defining events of this split occurred over the position of scholars on the Vietnam War debated in two

conferences, one in 1968 in the United States and another in 1969 in Copenhagen (Gleditsch, Nordkvelle,

& Strand, 2014). The Peace Studies section is created in International Studies Association in 1972.

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Although both approaches have led to research and teaching programmes in academia,

the scientific orientations of PR’s behaviourist approach lead to its recognition within

scientific research evaluations, while the normative PS is less recognised scientifically but

more recognised at a grassroots level.

The conceptual and normative challenges in the “socialist revolution” of the 1970 lead to

a period of conceptual overstretch. Gleditsch (2008) characterises PR in the 1980s as the

“wilderness years” – weak methodologies and peace being anything – a “black hole”

where “no social problem . . . does not have its legitimate place within peace research”

(Tromp, 1981, p. xxvii).

Late 1980s onwards

With the novelty of the Cold War gone and the realisation that humankind had learned

to live with the threat of nuclear war, in the 1980s PR was further questioned. The

mainstream concept in PR during the Cold War defines the state as the referent object,

is mainly concerned with the use of force and focuses on external threats to be dealt with

through emergency measures studied through non-normative positivist, rationalist

epistemologies (Buzan & Hansen, 2009).

The broadening of PR in the 1980s relates mainly to the nature of threats, considering

internal alongside external threats. Other types of internal violence are considered, like

democides, and the JPR expands its focus to terrorism, police and paramilitary

repression, and to issues of injustice in the division of labour both internationally and

nationally. JCR reflects an interest in intrastate conflict, including it within the scope of

the journal, and the COW project publishes its first intra-state conflict dataset in 1982.

In the post-Cold War era intrastate conflicts become the most relevant type of conflict,

with a peak of occurrences in 1991. Two debates are illustrative of the research focus,

one on the initiation of civil war and another on the nature of war.

The debate on the initiation of civil war opposes the feasibility of conflict hypothesis to

the grievances of groups’ hypothesis. The feasibility hypothesis suggests that civil war is

more likely to occur if it is financially and military feasible, with factors of economic greed

also found to be significantly associated with the initiation of civil war (Collier, Hoeffler,

& Rohner, 2009). The grievance hypothesis suggests that horizontal inequalities

are a

significant predictor of rebellion (Buhaug, Cederman, & Gleditsch, 2014), building on the

longstanding research linking conflict to ethnic groups.

The debate on the nature of civil war relates to the distinction between “old” and “new”

wars (Kaldor, 1999).

Old wars were: fought by regular armies over geo-political issues

or ideology, aimed for the control of territory, and were financed by states. While new

wars involve more state and non-state actors (regular armed forces, private security

contractors, mercenaries, jihadists, warlords, paramilitaries); are fought in the name of

identity (ethnic, religious or tribal); are not characterised by battles but by territorial

The 2015 SCImago Journal Rank that measures the scientific influence of scholarly journals lists JPR and

JCR in the top quartile, while of the three normative journals mentioned only Peace Review is listed in the

fourth quartile.

Where inequality, social exclusion and poverty occur in tandem with identity or regional boundaries.

Other classifications include: wars among the people (Smith, 2005), wars of the third kind (Holsti, 1996),

hybrid wars (Hoffman, 2007), privatisation of wars (Munkler, 2005) or post-modern wars (Hables Gray,

1997).

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control achieved through population displacement; and are financed through a myriad of

different sources of revenue secured through continued violence (looting, pillaging,

“taxation” of humanitarian aid, diaspora support, kidnapping or smuggling of oil,

diamonds, drugs or people) (Kaldor, 1999; 2013).

Dataset projects followed the changing patterns of civil wars and technological

advancements in data gathering. Among others, The Minorities at Risk project, initiated

by Ted Gurr in 1986, provides information on politically active ethnic groups and the

University of Uppsala in Sweden developed the one-sided violence dataset in 2007

and

non-state violence dataset in 2012

– both closer to “new” war characteristics – adding

to the established state-based violence dataset (intra-state)

first released in 2002,

which is closer to the concept of “old” wars. Although state-based conflict continues to

be the most deadly type of conflict, other types of violence have become more recurrent.

For instance there is a stable increase in the number of ongoing non-state based conflicts,

with its ratio in relation to state-based conflict increasing from 1.07 in 2011 to 1.4 in

2015 (Melander, Pettersson, & Themnér, 2016). See Picture 2 for a typology of armed

conflict.

Data coding has become ever more disaggregated due to new technologies: in terms of

the identification of the actors involved; geographically going below the state level to be

geo-coded to the village level; and temporarily moving from the year unit to the

individual days of events – the Uppsala Conflict Data Program’s Georeferenced Event

Dataset is a prime example (Sundberg & Melander, 2013).

Picture 2: Typology of armed conflict

Source: Eck (2008, p. 35)

The economic agenda of PR proposed by the “socialist revolution” in the 1970s is partly

taken over in the field of Development Studies and International Political Economy, and

Where violence by the state or non-state groups targets civilians.

Where violence occurs between non-state groups.

Where violence occurs between the state and non-state groups.

Extra-state conflicts are wars of colonial independence. There are a series of other violent events in conflict

that are not identified in the picture: riots, violent demonstrations, repression, indirect violence against

civilians, organized crime, gang wars, warlordism, banditry, assassinations (Eck, 2008).

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in the 1980s PR becomes characterised by the apprehensions of political science

(Gleditsch N. P., 1989).

The study of peace within PR is mostly represented by research on liberal peace, where

it is proposed that democracy and justice are essential for sustainable peace within and

between nations. The idea is that democracies are more responsible to citizens who are

less keen to engage in inter-state wars than their leaders and that democracies have

mechanisms to deal with intra-sate conflict in a peaceful manner. The democratic peace

theory debate was opened with the proposal that democratic states are unlikely to go to

war with each other (Doyle M. W., 1983; 1986), but 20 years on the debate is still not

settled (Doyle M. , 2005; Rosato, 2003).

Broadly speaking, PR outlived the end of the Cold War (associated with the fall of the

Berlin Wall in 1989) and its focus would adapt to the new reality. The JPR in the 1990s

and 2000s would focus on the classical issues such as the reduction of armed violence

and shifts attention from inter-state to intra-state civil war, other forms of internal

conflict and the democratic peace debate. In the 2000s, in both the JPR and JCR, there

is a growing interest in human rights, democratic peace and peacebuilding/peacekeeping,

and both journals kept publishing game theory and formal modelling. The focus continues

to be on conflict with articles in 2000 with the word “conflict” having above-average

citations and the word “peace” being less cited than the average in the JPR (Gleditsch,

Nordkvelle, & Strand, 2014).

A new debate that attracted significant attention, both in academia and in the public

sphere, was if with the end of the Cold War meant that the liberal democratic peace

agenda had become the “only game in town” to the point of being identified as an “end

of history” moment (Fukuyama, 1989), or if the sources of conflict would now come from

a “clash of civilizations” (Huntington, 1993) based on religious and cultural identities.

A development of the 1980s, and of the post-Cold War era in particular, is the increase

of epistemological approaches in the social sciences. Two main dichotomies grouped the

different approaches: the rationalist versus reflectivist and the positivist versus post-

positivist.

Kehoane (1988) proposed a distinction between the rationalist and reflectivist

approaches. Rationalist approaches use rational choice theories to explain the behaviour

of actors based on their individual preferences. Reflectivists argue that rationalist

accounts fail to identify the context-dependent aspects of decision making. They

considered that the behaviour of actors is the product of “conjuncture”: the historical

combination of material constraints, social patterns of thoughts and individuals

initiatives. The reflectivist approaches account for these factors and consider that

individual and social reflection and learning lead to changes in preferences and even

shape views of causality.

Unlike rationalism preferences are not assumed to be fixed;

values, norms and practices will vary in time and across cultures. Therefore one needs

to take into account changes in “consciousness”. “Reflexivity” in social action means that

there is a bi-directional relationship between cause and effect in which neither can be

assigned causes or effects. It is considered that there is a need not only to explain and

For an extensive literature review on civil war from an economic perspective see Blattman and Miguel

(2010).

Reflective approaches comprehend: interpretative approaches based on historical and textual

interpretations, materialist historico-sociological approaches following a Marxist tradition, political theory

based on classical political philosophy and international law.

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measure the behaviour of actors but also to understand the intersubjective meanings

and discourses that informed actors’ choices.

Lapid (1989) would bring to the forefront the subject-object problem of social sciences.

In social sciences the separation between the researcher (subject) and phenomena

(object) is much less clear than in the natural science. In social sciences, human beings

create theories about themselves and the positivist behaviouralist aspiration for a neutral

researcher detached from the phenomenon is considered impossible to achieve. Instead

Lapid highlights the post-positivism approach where the proper unit of analysis in social

science is paradigms, constituted by a triad of the phenomenon (empirics), analysis

(theory, hypothesis, explanations) and the thematics (assumptions, epistemological

premises). At the centre of the triad is the social-intellectual-ethical scientist (Hooker,

1987, p. 10; Lapid, 1989, p. 240). Following from these constituted and constitutive roles

of the scientist, there should be a focus on the premises and assumptions of the research:

the perspectives the scientists adopt when they construct phenomena. Positivist

empiricism (observable regularities) is in this way challenged in different degrees by

post-positivism in that: a) empiricism is to be subordinate to the perspectives adopted

by the researcher; b) perspectives should not be bound by their possible empirical

verification; and c) perspectives may have a normative capacity to create the empirical

realities envisioned by it. This preponderance with perspectives over empiricism means

that objectivity and truth are relative, dependent on the socially and historically situated

paradigm, the perspectives of the researcher and the diverse methodological approaches

that can be used.

Rationalist approaches, committed to rational choice theory, normally have a positivist

stance – search for objective causal-effect mechanisms that are empirically verifiable.

Such is the case of behaviourist PR scholars. Reflectivism approaches normally have a

post-positivism stance, closer to normative PS scholars.

The new epistemological approaches of the 1980s onwards would be applied to the study

of peace and conflict, leading to new fields of study within the broader umbrella of ISS.

Linguistics highlights the importance of language and discursive representation of the

object of analysis. Post-structuralism underlines how all phenomena exist only through a

discursive representation that is permeated by power relations. Feminist theory, which

emerged in 1980s, was inspired by the women’s liberation movements of the 1960s and

1970s and highlights the dynamics of patriarchy. Critical theory builds on the normative

approach proposed by Galtung in the “socialist revolution” (Pureza, 2011). In particular,

critical security studies challenges realism’s military-focused, state-centred and zero-sum

understanding of security, which is to be replaced by a project of human emancipation

(Collective, 2006). Constructivism (both conventional and critical) brought to the

forefront the relevance of ideas, culture, norms and identities, adopted by Critical

Security Studies and the Copenhagen School. Post-colonialism focuses on power relations

between the “West and the rest” and shares the Marxist conception of “structural

violence”. Human security broadens the concept of “structural violence” to link security

with development (Collective, 2006). The Copenhagen School identifies how there is a

“securitization” process in which an actor constitutes, through discourse, an issue,

another actor or phenomenon as a threat to a referent object (state, society, individual).

This post-positivism relativism and methodological pluralism puts into question the Kuhnian version of

scientific progress (Kuhn, 1962) where scientific revolutions lead to the adoption of a new (better) paradigm

that replaces an older one. Instead post-positivism argues for a diversity of equally legitimate paradigms.

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With the exception of conventional constructivism, to a more or less extent the new

approaches have in common a normative commitment to research: to expose power

relations and identify a more just and human peace.

These epistemological developments also had an expression in PR, mainly in the concern

with the security of humans at a societal, group and individual level (besides the state

level). These expressions can be seen as focusing on intra-state conflict and topics such

as ethnicity, democide and politicides, non-state violence and, in some cases, the study

of the security of individuals made possible by the availability of disaggregated data.

The most significant event since the end of the Cold War is the 2001 September 11

attacks, which had a significant impact on the agenda of Strategic Studies, ISS and PR

even if part of their agenda continues unaffected. The centrality of the state and

rationality assumptions were questioned by the relevance of networked non-state actors.

Politically, it empowered in the West realist perspectives of security (closer to Strategic

Studies) in detriment of liberal internationalism. It reopened discussion on the use of

force, reinforced the 1990s debate on the transformation of war and the processes of

war and fighting and led to increased concerns about nuclear proliferation. Specifically,

US foreign policy (and of the countries in the coalition involved in the war in Iraq) were

scrutinised mainly from post-structuralist, feminist and post-colonialist scholars with a

focus on the discursive conceptions of security and the new Western technologies of war-

making. But many of the issues of the research agenda remained unchanged: the causes

of war; regional security; great power politics; technology of war; or classical issues such

as arms racing or deterrence (Buzan & Hansen, 2009).

The 1990s saw a continuation of the institutionalisation of PR and, broadly speaking,

most institutes survived the end of the Cold War. PR is now characterised by a broad

network of researchers, schools and journals with a higher degree of theoretical and

epistemological specialisation.

Conclusion

PR survived two epistemological challenges, the “socialist revolution” and the reflectivist

and post-positivist challenges, and outlived the end of the Cold War. In its 60 years of

existence it adapted its referent object and evolved its methods within a behaviourist

approach to feat the reality of the phenomenon under study as well as methodological

and technological developments.

At the beginning of the new century conflict is principally at an intra-state level but,

overall, the world has more peace than in the preceding century, a peace based on the

liberal model (Gleditsch N. P., 2008).

Behaviouralist PR, as illustrated by the JPR, came to become: multidisciplinary (involving

fields like political science, sociology, geography or economics); doing analysis with more

disaggregated units like time, space, institutions, actors and issues; engaged in

In conventional constructivism the agency for order and peace is significantly associated with the state (its

main referent object), with limited recognition of institutional or individual agency, and adopts a “soft-

positivist” epistemology. Therefore, conventional constructivism is an exceptional case of a reflectivist

approach, which is positivist. Conventional constructivism is concerned with explaining the link between the

social constructions of identity (frequently associated with ethno-linguistic groups), the political mobilisation

of that identity and civil violence (Sambanis, 2002). Critical constructivism affords agency to collectivities

(the main referent object) and adopts a narrative and sociological post-positivist epistemology.

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forecasting models; significant empirical quantification; and is concerned with scientific

transparency through replication (Gates, 2014).

Analysis of inter-state conflict has, in some cases, adopted a multi-method research

design (game theory with case studies and quantitative tests) and moved away from the

systemic level to the dyadic level of interaction between states, incorporating societal-

level variables (for instances regime type, the political security of elites, public opinion)

to explain decision making. Theories of international conflict became more complex due

to the: difficulties of identifying the right level of analysis; developments in theoretical

game models, in particular the ones incorporating incomplete information; incorporation

of sequencing in decision making leading to war; and the need to deal with endogeneity

issues (Levy J. S., 2000).

Research on peace as the prime referent object has been less present in PR with the

exception of studies on liberal peace, democratic peace or capitalist peace. Research

focuses on the causes, duration and endings of civil wars, post-war reconstruction,

contributions of institutions to peace and other forms of violent conflict such as terrorism,

coups, communal violence, political repression or crime. This is analysed with increasingly

sophisticated statistical methods and disaggregated analysis.

PR’s “non-normative” behaviourist approach is its main distinctive epistemological

characteristic – alongside its focus on peace and conflict – one that continues to

congregate the work of researchers in a growing epistemological community.

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