Unobservable, but unimportant? The relevance of usually unobserved variables for the evaluation of labor market policies

The central role of the propensity score in observational studies for causal effects

Paul R. Rosenbaum, Donald B. Rubin · Biometrika · 1983 · 31K citations · Full text

Public Health, Biostatistics, Causal Inference +16

Generalized expectancies for internal versus external control of reinforcement.

Julian B. Rotter · The Psychological Monographs · 1966 · 21.9K citations

Public Health, Behavioral Sciences, Psychology +7

Individual Comparisons by Ranking Methods

Frank Wilcoxon · Biometrics Bulletin · 1945 · 14.4K citations

Business, Computer Science, Multi-criteria Decision Making +8

Estimating causal effects of treatments in randomized and nonrandomized studies.

Donald B. Rubin · Journal of Educational Psychology · 1974 · 9.5K citations · Full text

Public Health, Behavioral Sciences, Psychology +13

Personality Structure: Emergence of the Five-Factor Model

John M. Digman · Annual Review of Psychology · 1990 · 6.5K citations

Social Sciences, Genetics, Psychology +17