Yes. A high test-retest correlation is one of the most basic criteria for an IQ test question or any inventory/item intended to measure something which is considered reasonably stable. (If it can’t even measure itself, how is it going measure anything else?)
Yes. A high test-retest correlation is one of the most basic criteria for an IQ test question or any inventory/item intended to measure something which is considered reasonably stable. (If it can’t even measure itself, how is it going measure anything else?)