How does a Lakatosian programme differ from a Kuhnian paradigm?

Both are larger than single theories, but a research programme is appraised by explicit, comparative criteria of progress, whereas a paradigm is characterized more sociologically by shared exemplars and community practice. Lakatos intended his account to preserve the rationality of theory change that he thought Kuhn's risked surrendering.

Research Programmes and Paradigms

Lakatos's research programmes and Kuhn's paradigms are unit-of-appraisal accounts that locate scientific rationality in larger structures than single theories.

Definition

A research programme (Lakatos) is a sequence of theories sharing a fixed hard core protected by an adjustable belt of auxiliary hypotheses, appraised as progressive or degenerating; a paradigm (Kuhn) is a constellation of shared commitments, exemplars, and practices that defines normal science within a community.

Scope

This topic covers Lakatos's methodology of scientific research programmes — with its hard core, protective belt, and progressive/degenerating distinction — and Kuhn's account of paradigm-governed normal science, alongside their contrasting views of how and when science changes its allegiances.

Core questions

What is the proper unit for appraising scientific rationality?
When is a research programme progressive rather than degenerating?
What holds a paradigm together during normal science?
Do programmes and paradigms make theory choice rational or merely sociological?

Key concepts

hard core
protective belt
progressive and degenerating programmes
novel prediction
paradigm
normal science
disciplinary matrix

Key theories

Methodology of scientific research programmes: Lakatos appraises programmes by whether their successive theories predict novel facts (progressive) or merely accommodate anomalies post hoc (degenerating), with the hard core shielded by a protective belt.
Paradigms and normal science: Kuhn holds that mature science operates within a paradigm that supplies exemplary problem solutions and standards, with anomalies eventually precipitating crisis and revolution.

History

Kuhn introduced paradigms and normal science in 1962. In the 1965 London colloquium published as Criticism and the Growth of Knowledge (1970), Lakatos developed his research-programme methodology partly as a rational reconstruction responding to Kuhn and Popper, framing a lasting debate over the unit and basis of scientific appraisal.

Debates

Rational appraisal versus community consensus: Lakatos seeks objective criteria (novel prediction) for appraising programmes, whereas Kuhn's account leans on the judgement of the scientific community, raising the question of whether paradigm shifts are fully rational.

Key figures

Imre Lakatos
Thomas Kuhn
Alan Musgrave

Seminal works

kuhn1962
lakatos1970
lakatosmusgrave1970

Frequently asked questions

How does a Lakatosian programme differ from a Kuhnian paradigm?: Both are larger than single theories, but a research programme is appraised by explicit, comparative criteria of progress, whereas a paradigm is characterized more sociologically by shared exemplars and community practice. Lakatos intended his account to preserve the rationality of theory change that he thought Kuhn's risked surrendering.