Dilemmatics

Experimental and Quasi-Experimental Designs for Research

1963 • 15,071 citations

Quasi-Experimentation: Design & Analysis Issues for Field Settings

1979 • 11,624 citations

The two disciplines of scientific psychology.

1957 • 2,486 citations

Unobtrusive Measures: Non-Reactive Research in the Social Sciences.

1966 • 312 citations

Research on Human Behavior: A Systematic Guide to Method

1973 • 275 citations

Unobtrusive Measures: Nonreactive Research in the Social Sciences

1967 • 123 citations