A New Generation of CAPI: New Input Techniques and Multi-Media-Features: Is there any improvement in the data?

We hypothesized that differences between input techniques depend on whether an interviewer asks the questions and handles the computer or the interview is conducted as a self-administered interview. We therefore used this interview mode as a second factor and tested if there was a difference in the number of answers between self-administered interviews and interviews conducted by interviewers. We used interviewers who had high typing skills because we thought that the difference between paper-and-pencil interviews and keyboard interviews would disappear when people keying in the data have high typing skills