Bias in computer-assisted surveys

The emergence of new technology has enabled rapid data collection via mechanical interviews. Improved speed of data collection enables researchers to collect a larger volume of data with lower interview cost. Computers allow editing during data collection to prevent errors and they direct respondents to relevant questions. They may also facilitate immediate data tabulation and analysis. In spite of these advantages, a concern for bias introduction arises. The reported study finds that direct computer data collection via keyboard provides data as accurate as personal interviews and self-administered forms but may lower response rates on certain questions. This result implies that computers are valid data collection devices in certain situations.