Dr. McGrew's site has just posted information about how timing in the brain is related to intelligence. A quote from the abstract reads, "In the present study, the relationship between performance on temporal (timing) and pitch discrimination and psychometric intelligence was investigated in a sample of 164 participants by means of an experimental dissociation paradigm. Performance on both temporal(timing) and pitch discrimination was substantially related to psychometric intelligence (r = .43 and r =.39). The present study yielded further evidence for a functional relationship between psychometric intelligence and temporal as well as pitch discrimination acuity"
