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Filter questions are used in many surveys to avoid asking follow-up questions that do not apply to every respondent. Often, detailed follow-up questions are asked immediately after a filter question is endorsed. This design is called interleafing. In contrast, other surveys use a 'grouped' approach where several yes/no filter questions are asked first, and the follow-up questions for any filter question that was endorsed are asked later in the survey. Previous research has found that whendoi:10.29115/sp-2018-0009 fatcat:y36jrk77vrgptcnxivfnyzo3lu