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This project aims to investigate the reasons for unhealthy snacking behavior. To that end, the validity and reliability of the Reasons to Snack Scale are assessed. The predictive validity of the scale is determined by measuring unhealthy snack consumption one month after administering the Reasons to Snack Scale.

In April 2013, the LISS panel was presented part 2 of the questionnaire “Consumption of snacks”. Besides repeating the Reasons to Snack Scale, the predictive validity of the scale is determined by measuring unhealthy snack consumption.

In February 2012, a questionnaire consisting of 5 parts was fielded in the LISS panel. Part 4 consisted of 5 different versions. The respondents were presented one of these versions, which version the respondent received, was determined at random. In the first 4 versions, the respondent had the possibility of earning money (with the exception of 1 conditional group, which was unable to earn money in part 4). Each time, the amount of money depended on the respondent’s decision and a die or coin tossed by the computer. One of the questionnaire parts was selected for actual payment of the sum earned. This amount was shown directly upon completion of the questionnaire.

In February a questionnaire about dealing with risks was presented to the LISS panel. Some additional questions were included in the Health Core questionnaire in November and December.

This projects consists of several studies asking questions concerning aggression, empathy and social bonding. It also incorporates an experiment into the effect of seeing emotional faces on answer behavior.