This study explored whether the interviewers' judgments of respondents' performances in an initial survey can predict survey participation for a second survey among the same group of respondents in a panel study. Specifically, this study examined two interviewer variables: the interviewers' judgments of (1) the respondents' understanding of survey questions and (2) the respondents' attitudes toward the survey. The analyses revealed that respondents who were rated to have an excellent understanding of the survey questions and friendly attitudes were more likely to respond to the second interview request than those with a poor understanding and unfriendly attitudes, after controlling for the characteristics of the respondents. Of these two, the judgment of the respondents' attitudes was a stronger predictor. However, interviewer's judgments are not correlated with the primary survey outcome or the data quality. This suggests limited value of the interviewer observation.