Calibrating Questionnaires with Weekly Diaries: An Application in Religious Behavior, Netherlands 1975 to 2005

This article presents an innovative approach to improve the power of questionnaires by combining them with weekly diaries. The aim is to show how one can calibrate information collected from questionnaires, which provide a distribution that is in general biased, with diary data, which are more accurate but cannot provide a distribution across a range of frequencies. These problems become even more pronounced when the object of analysis is a...