J. Hornik et al., THE INFLUENCE OF PROTOTYPIC VALUES ON THE VALIDITY OF STUDIES USING TIME ESTIMATES, Journal of the Market Research Society, 36(2), 1994, pp. 145-147
Surveys that use self-reports of time-based activities might suffer fr
om a response tendency to round values. Evidence presented in this pap
er shows that temporal reports contain a rounding bias, which means th
at prototypic decimal digits such as 0 and 5 are overused. This bias i
s especially severe for larger values, for hurried data collection met
hods and retrospective reports.