ABSTRACT
Extensive literature exists comparing computer-assisted personal interviewing (CAPI) and computer-assisted telephone interviewing (CATI). This chapter uses interaction quantity as a criterion for comparison to better understand mode effects. In studies of interviewer–respondent interactions, generally referred to as “interaction analysis” or “behavior coding” depending on the level of detail employed interactions are systematically evaluated for deviations from the so-called paradigmatic sequence. For the analyses of interaction quantity, methods that include the complex structure of the data were used. In addition to the number of words uttered, the occurrence of interviewers’ and respondents’ filled pauses and whether respondents uttered uncertainty markers in mixed effects logistic regression models were explored. The chapter investigates differences in interviewer–respondent interaction in CAPI and CATI interviews during the administration of the European Social Survey (ESS) Round 5, using slightly modified version of the ESS Round 5 questionnaire.
