Effects of a Persuasive Message upon Attitudes: A Methodological Comparison of an Offset before-after Design with a Pretest-Posttest Design

Factors relevant to the validity of experiments in social settings.

1957 • 1,071 citations

An extension of control group design.

1949 • 524 citations

Report on an Educational Campaign: The Cincinnati Plan for the United Nations

1950 • 87 citations

The Interview Effect in Polling

1948 • 31 citations