Empirical evidence on sibling resemblance in intelligence published since 1915 in the United States and Europe, including more than 27,000 sibling pairs, is reviewed. The results of these investigations are presented in tables showing the date, investigator, test, sample size, and correlations found for each specific study. Collectively, the results are highly consistent with the polygenic hypo...

Neuroimaging studies have suggested that the auditory cortex is involved in music processing as well as in auditory imagery. We hypothesized that music training may be associated with improved auditory imagery ability. In this study, performance of musically trained and musically naive subjects was compared on: (1) a musical mental imagery task (in which subjects had to mentally compare pitches...

Article history: Received 9 May 2013 Received in revised form 22 July 2013 Accepted 23 July 2013 Available online xxxx While many studies have examined the linear relationship between intelligence and economic success, only few, if any, examined their nonlinear relationships. The current study examines such relationships in a large, nationally representative sample, using pay as an indicator of...

Computer games, which are currently very popular among students, can affect different cognitive abilities. The purpose of the present study is to examine undergraduate students’ experiences and preferences in playing computer games as well as their mental rotation abilities. A total of 163 undergraduate students participated. The results showed a significant difference between students’ mental ...

In a society that supports universal public education and allows a high degree of social and occupational mobility, a positive correlation is inevitable between socioeconomic status (SES) and intelligence. (The term intelligence is used here to mean those abilities primarily associated with scholastic aptitude.) Also, because there is a high correlation (of the order of 0.8-0.9) between phenoty...

Gibson developed an interactionist view of perception and action that focused on information that is available in the environment. He thereby rejected the still-prevalent framing assumption of factoring external-physical and internal-mental processes. The interactionist alternative, which focuses on processes of agent-situation interactions, is taken in ecological psychology as well as in recen...

We propose that stronger than usual correlations between abilities indicate which cognitive processes are impaired in autism. Study 1 compared partial correlations (controlling age) between intelligence and social cognition in children with autism (n = 18), mental retardation (MR; n = 34), or no psychological disorder (n = 37). Correlations were stronger in the autism group. Study 2 compared co...