Up to now there are hardly any studies available that examine the feasibility of online ability assessment. In the present study, a figural matrices test for the assessment of intellectual giftedness was applied as an online- and as a paper and pencil-version. The data was analyzed by classical test theory and by modern item response theory. Item design was based on a rule taxonomy and assessed by multiple regression analyses. Due to the reduction in experimental control in online data collection, the comparison of both data sets was limited to the aspects of qualitative equivalence. It could be shown that reliable and valid data can be collected online and that both test versions are comparable with regard to the contribution of the features of item design to task difficulty.
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