The Abstract Thinking Adaptive Test (ATAT) is a culture-fair measure of fluid and spatial reasoning designed by u/Training-Day5651. It assesses a person’s ability to manipulate visual information, identify relationships, and solve figural and numerical problems with minimal reliance on crystallized knowledge.
The ATAT consists of six item types: figure sequences, figure classification, figure weights, object rotation, pattern completion, and number sequences. These items require induction, deduction, mental transformation, and numerical reasoning, and are designed to measure fluid intelligence, spatial ability, and quantitative reasoning.
The ATAT’s items have been calibrated with IRT, so the test now adapts as you go. Each question is chosen based on how you have answered so far. Items are chosen based on current estimated ability to maximize the information gained from each response. The test keeps going until your score is measured precisely enough, which is much more efficient than a fixed-length test. Because of this, the number of questions varies from person to person, and two people will rarely see the same set.