Only 19 percent of contact studies in the meta-analysis actually followed Allport’s full model.

Evidence

It may seem surprising that only 134 (19 percent) of our samples followed Allport’s model. But this result reflects the fact that 70 percent of the samples in our file rely on participants reporting on their contact without information concerning the conditions of the contact. — John F. Dovidio, Peter Glick, Laurie A. Rudman, On the Nature of Prejudice, 1718

Categorization

• SEED: Possible essay: ‘The Most-Cited Theory Nobody Actually Tests’ — classic theories routinely cited as foundations while almost no empirical work operationalizes them fully.