{"id":3551,"date":"2026-08-11T22:11:55","date_gmt":"2026-08-11T16:41:55","guid":{"rendered":"https:\/\/forumias.com\/psir\/notes\/systems-theory\/"},"modified":"2026-08-12T02:57:34","modified_gmt":"2026-08-11T21:27:34","slug":"systems-theory","status":"publish","type":"psir_note","link":"https:\/\/forumias.com\/psir\/notes\/systems-theory\/","title":{"rendered":"Systems theory"},"content":{"rendered":"
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PSIR Notes<\/a>\u203a<\/span>II-A Comparative Political Analysis and International Politics<\/a>\u203a<\/span>Systems theory<\/span><\/div>\n
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Paper I \u00b7 Comparative Political Analysis and International Politics<\/div>\n

Systems theory<\/h1>\n
Syllabus \u00b7 Paper II-A \u00b7 5<\/b> \u2014 Approaches to the Study of International Relations : Idealist, Realist, Marxist, Functionalist and Systems theory<\/span>.<\/div>\n<\/header>\n
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Systems Theory and Morton Kaplan\u2019s Models<\/h3>\n

Systems theory views global politics as a system of interacting elements \u2014 states and non-state actors within boundaries yet open to the environment. Drawn from biology, sociology and engineering, it entered political science as a product of the Behavioural Revolution<\/span>. Types: natural, mechanical and social (the international system is the most complex). Stanley Hoffmann<\/span> (System and Process in International Politics<\/em>): a dynamic network in which a shift in one part reverberates across the whole.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Kaplan\u2019s classical model<\/th>\nCore feature<\/th>\n<\/tr>\n<\/thead>\n
Balance of power<\/td>\nFive or six essential actors governed by six rules; oppose any actor that threatens the balance<\/td>\n<\/tr>\n
Loose bipolar<\/td>\nTwo superpowers with non-aligned states and a role for supranational bodies (the Cold War)<\/td>\n<\/tr>\n
Tight bipolar<\/td>\nHierarchic blocs with little non-alignment (the later Cold War)<\/td>\n<\/tr>\n
Universal international<\/td>\nA universal actor integrating judicial, economic, political and administrative functions<\/td>\n<\/tr>\n
Hierarchical international<\/td>\nA universal actor absorbs almost all others \u2014 a hegemonic order<\/td>\n<\/tr>\n
Unit veto<\/td>\nEvery actor can destroy every other \u2014 mutual destruction, and therefore unstable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Kaplan added four \u201cnew\u201d models: a very loose bipolar system, detente, unstable blocs, and incomplete nuclear diffusion. Criticism: over-emphasis on structure at the expense of agency; hypothetical models that do not fit a multipolar world of non-state actors. Stanley Hoffmann<\/span> found it too remote; Hedley Bull<\/span> called it an intellectual exercise; Robert Lieber<\/span> found it hard to test.<\/p>\n

UPSC 2016 \u00b7 10m<\/span>Critically examine the functional and system approaches to the study of international relations.<\/span>Answer<\/a><\/div>\n

Systems Approach \u2014 Easton’s input-output model<\/h3>\n

Developed by David Easton<\/span>; drawn from biology and sociology (Talcott Parsons<\/span>).<\/p>\n

What a “system” is<\/span><\/p>\n

Ludwig von Bertalanffy<\/span> (General Systems Theory): “a set of elements standing in interaction.” O. R. Young<\/span>: “a set of objects, together with relationships between the objects and between their attributes.”<\/p>\n

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The political system is “that behavior or set of interactions through which authoritative allocations are made and implemented for society.” \u2014 David Easton, A Systems Analysis of Political Life (1965)<\/span><\/p>\n<\/blockquote>\n

The political system as a converter of demands into decisions.<\/span> INPUTS<\/span> (Demands + Supports) \u2192 POLITICAL SYSTEM<\/span> (Conversion \u2014 authoritative allocation of values) \u2192 OUTPUTS<\/span> (Decisions + Policies). FEEDBACK: outputs reshape future demands & supports.<\/em><\/p>\n

Criticisms of Easton<\/span><\/p>\n