The current study is a cross-sectional survey to evaluate the illness perception of addiction and its relation with substance use among undergraduate psychology students in the Netherlands. The participants were third-year psychology students (n=308). The IPQ-A was used to evaluate the illness perception of addiction. Substance use was self-reported with a checklist of substances. Differences in perception were analysed between students who use substances and do not use. The relation between substance use (days of use, amount of use, and year of use) and illness perception of addiction was explored. The data set includes the statistic data (the SPSS file) including the analysis (the syntax file), the codebook that describes the study, and the questionnaires (the IPQ-R, IPQ-A and the substances checklist).

The syntax 'Ayu_2016_Illness perception_syntax.sps' sometimes refers to tables in an article. This article is expected to be published in PLOSONE and will be added to this dataset when published. For now, similar tables can be compiled by running the syntax.