Behavioral and Brain Sciences

Open Peer Commentary

P-FIT and the neuroscience of intelligence: How well does P fit?

Vivek Prabhakarana1 and Bart Rypmaa2

a1 Departments of Neuroradiology, Neurology and Radiology, Johns Hopkins Hospital, Baltimore, MD 21287 [email protected]

a2 School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, TX 75080. [email protected]


A well-recognized framework for modeling human intelligence centers around Spearman's g, a common central factor accounting for individual differences in cognitive performance across a variety of complex tasks (Spearman 1904). The neural basis of g may be better characterized by posterior-frontal integration, rather than parietal, which may be just one of many posterior regions that are controlled by the prefrontal cortex (PFC).