All together, these results suggest good predictive validity for the SAT for freshman college performance.
But as is always the case for any single test or type of test, there is room for improvement. The prediction of tests of “general” ability typically can be improved upon, and there is evidence indicating that the SAT is mainly a test of g (Frey & Detterman, 2004), although the interpretation of these findings has generated some controversy (Bridgeman, 2004; Frey & Detterman, 2005).