This paper focuses on behavioural reasons underlying stated attribute non-attendance in choice experiments. In order to identify and incorporate procedures for dealing with heterogeneous attribute processing strategies, we ask respondents follow-up questions regarding their reasons for ignoring...

Measuring citizens’ political knowledge is important for understanding public opinion formation. In view of the increasing popularity of Web surveys, this paper examines the limitations of this interviewing facility when measuring factual political knowledge. We show that Web surveys contain a...