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Crossley, Thomas F.; Schmidt, Tobias; Tzamourani, Panagiota and Winter, Joachim K. (2020): Interviewer effects and the measurement of financial literacy. In: Journal of the Royal Statistical Society Series A-Statistics in Society, Vol. 184, No. 1: pp. 150-178

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In this paper, we ask whether interviewers influence the answers to a standard set of survey questions on financial literacy. We study data from Germany's wealth survey, the Panel on Household Finances (PHF). We have access to extensive auxiliary data, including interviewer identifiers, Background: characteristics of interviewers and measures of interviewer activity through the survey. We find that interviewer effects explain a significant fraction of the variance of the financial literacy score, and intra-interviewer correlations are notably larger for the financial literacy score than for other survey variables. We explore how accounting for interviewer effects can improve estimates of the effects of financial literacy on financial behaviours and outcomes.

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