To assess the important intelligence factor verbal reasoning, a new task type was developed. After reading a short description introducing the relations of different family members, test takers needed to identify the relation between two target family members. Based on item generation rules, 60 items of the corresponding Family Relations Reasoning Test (FRRT) were constructed. In study 1, n = 225 Austrian university students worked on one of four sets consisting of 18 German items linked with bridge items. Item Response Theory- (IRT-) analyses showed that the Rasch model held for most items, Conditional Likelihood Ratio Tests revealed strong model validity. No Differential Item Functioning (DIF) was detected, and misfit was shown for only one item. Reliability estimates and correlations with syllogism items (up to medium effect size) were partially convincing. In study 2, 60 English items were administered to n = 113 Californian college students. IRT analyses showed mostly strong validity (only five items depicted DIF and six items revealed misfit). Reliability indicators were at least acceptable, and correlations with syllogism items were of small to medium effect size. Finally, we discuss these mostly promising results suggesting the usefulness to construct rule-based items related to family relations and to assess verbal reasoning with these items.