Abstract
Recent work on experimenter effects necessitates reexamination of many research findings, and Examiner-Subject interactions may provide clues for interpersonal determinants of various functions. Examiner, Examiner-sex, and Subject-sex effects upon categorizing behavior were studied. For amount of information in S's response set and for number of categories, none of the above factors were significant. The effect of meaning-domain of statements categorized was significant (in support of previous findings), with the more personally relevant domain containing less information and having fewer categories. The same effect held for distribution of items over categories for female examiners. For male examiners, distribution of items over categories was subject to Domain X Examiner and Subject-sex × Examiner effects.