Therefore the traditional forms of computerized interviewing remain viable, and these include disk-by-mail and CAPI (Computer Aided Personal Interviewing).
Disk by mail interviewing involves sending a computer diskette to respondents who have been previously recruited via (usually) the telephone. When inserted into the computer, an interviewing programme is automatically run, with the results of the interview being stored on the disk, to be retrieved when the disk is returned to the research company. Often a paper questionnaire or prompt sheets will accompany the disk.
This is still a relatively uncommon technique in New Zealand, but has been very successfully used by Synovate, evaluating issues as varied as tolls pricing schemes and retailers’ trade loyalty programmes. However it clearly can only be used with a relatively computer-literate sample, all of whom must have access to a computer. For this reason it is usually best for business respondents.
CAPI (Computer Aided Personal Interviewing)
CAPI surveying involves supplying a respondent with a computer which is running a computerized interviewing programme, and allowing them to complete the questionnaire at the time. The hardware can range from special handheld devices to laptops. The technique is ideal for cases where the people interviewed are unlikely to have computers, and / or be uncomfortable using them – as the interviewer can set the computer up and help with any problems which may arise.