Latin square tasks: A multi-study evaluation

The Latin Square Task (LST) was proposed as a theoretically well-grounded paradigm for measuring fluid intelligence. In four studies (total N = 3,439) we systematically investigated the psychometric properties of LSTs. Results provided evidence that (a) construct is unidimensional, (b) administered stimulus types and rotation item matrix only played minor role, (c) relations with other measures reasoning ability were in expected range (about r .50), confirming validity For unsupervised automated test construction, difficulty insufficiently accounted by relational complexity number steps need to be memorized solving an item. We discuss possible remedies improving including its generalizability. Furthermore, propose binding-hypothesis working memory suited account difficulties