A test of behavioral rigidity.

Mechanization in problem solving: The effect of Einstellung.

Abraham S. Luchins · The Psychological Monographs · 1942 · 1.1K citations

Social Sciences, Educational Psychology, Cognitive Psychology +5

Generalized mental rigidity as a factor in ethnocentrism.

Milton Rokeach · Journal of Abnormal & Social Psychology · 1948 · 246 citations

Social Sciences, Psychology, Social Psychology +5

EXPERIMENTAL STUDIES OF RIGIDITY. I. THE MEASUREMENT OF RIGIDITY IN NORMAL AND FEEBLE-MINDED PERSONS*

Jacob S. Kounin · Journal of Personality · 1941 · 113 citations

Social Sciences, Behavioral Sciences, Psychology +6

Multiple Group Methods for Common-Factor Analysis: their Basis, Computation, and Interpretation

Louis Guttman · Psychometrika · 1952 · 98 citations

Education, Educational Measurement, Psychology +13

A Multiple Group Method of Factoring the Correlation Matrix

L. L. Thurstone · Psychometrika · 1945 · 46 citations

Education, Biostatistics, Measurement Invariance +11