Summary: Jack Naglieri, research professor at University of Virginia: "it depends". Richard Nisbett, professor of psychology at the University of Michigan: "yes". Stephen Ceci, professor of developmental psychology at Cornell University: "yes". Alan S. Kaufman, clinical professor of psychology at the Yale University School of Medicine: "it depends". Kevin McGrew, director of the Institute for Applied Psychometrics, visiting professor in Educational Psychology at the University of Minnesota: "it depends".
"Working memory and fluid reasoning: same or different? It depends. Imposing extreme time pressures on an IQ test forces people to draw almost exclusively on their limited capacity working memory capacity, whereas giving people more time to think and reason gives them more of a chance to bring to the table other cognitive functions that contribute to their intellectual brilliance." —Scott Barry Kaufman