Executive functions in 111 adolescent male offenders were examined using the Cognitive Assessment System (CAS). As hypothesized, mean scores for the sample were significantly lower than norms on CAS measures of Planning, Attention, and Successive Processing, and deficits remained for individuals with a childhood-onset when the sample was divided…

Executive functions in 100 incarcerated adolescent female offenders were examined using the Cognitive Assessment System (CAS). As hypothesized, mean scores for the sample were significantly lower than norms on measures of Planning and Successive Processing. Contrary to our hypothesis, the Attention mean did not differ significantly from the…

The simultaneous and successive processing model of cognitive abilities was compared to a traditional primary mental abilities model. Simultaneous processing was found to be primarily related to spatial ability; and to a lesser extent, to memory and inductive reasoning. Subjects were 104 fourth-grade urban males. (Author/GD C)

Reading comprehension and vocabulary scores, and verbal and nonverbal IQ were significantly related to both simultaneous and successive processing ability in fourth grade Canadian boys. High levels of both types of processing ability are necessary for high achievement; high levels of one type only will result in moderate achievement. (Author/GDC)