American IQ test scores have dropped during a recent 13-year period, a remarkable finding that runs counter to the well-established trend of increasing IQ scores throughout much of the 20th century.

Trends of 35-item composite ICAR scores stratified by education. Note. Data collection for the category "currently in graduate or professional school" did not start until August 2010. The dashed lines ...

ChatGPT is the first nonhuman subject I have ever tested. In my work as a clinical psychologist, I assess the cognitive skills of human patients using standardized intelligence tests. So I was ...