It is important to account for timing of puberty when studying the adolescent brain and cognition. The use of classical methods for assessing pubertal status may not be feasible in some studies, especially in male adolescents. Using data from a sample of 478 males from a longitudinal birth cohort, we describe the calculations of three independent…

Aim: To investigate the relation between head growth at different periods and IQ at 8 years, and to identify factors associated with more rapid head growth. Method: Two parallel cohorts of term low birthweight (LBW) and appropriate birthweight (ABW) infants were enrolled at birth in northeast Brazil. Anthropometric measurements were made at birth,…

Previously we found in preschool that child-directed pretend play in small playing groups importantly improves cognitive competence in mixed-age environment and that the effect is based on close coupling between affective and cognitive domain. To foster affective and cognitive intertwining, it is reasonable to select the most favored pretend plays…

This study compared the cognitive control skills of male incarcerated adolescents (n = 44), male control adolescents (n = 33), male incarcerated young adults (n = 41), and male control young adults (n = 35) using the AX-continuous performance test (AX-CPT). This test measures proactive control (the ability to maintain a mental representation of…

We conducted a longitudinal analysis of the relative intensity and duration of interests associated with conceptual domains between the ages of 4 and 6 years, respectively. Results indicated a significant portion of preschool children do sustain an interest in conceptual domains during some portion of their childhood. Expected gender differences…

Sex differences in the latent general and broad cognitive abilities underlying the Woodcock-Johnson Tests of Cognitive Abilities were investigated for children, youth, and adults ages 6 through 59. A developmental, multiple indicator-multiple cause, structural equation model was used to investigate sex differences in latent cognitive abilities as…

Research examining the influence of collaborative learning experiences on students' intellectual development has been somewhat inconclusive and largely based on samples of white, traditional-aged college students. Using data from the College Student Experiences Questionnaire (Pace, 1990), the author examines this relationship for a random sample…

When it comes to the reproductive health behaviors of teens and young adults, far more public attention has focused on women than on men. That's not surprising. After all, men don't actually have the babies. Yet the importance of understanding men's reproductive health behaviors should not be overlooked, given their potential implications for men…

This study investigated the relationship of cognitive developmental changes to physiological and anatomical changes by measuring both types of data within the same subjects. Cortical electrical activity was measured in 24 males between 10 and 12 years of age. Event-related potentials (ERPs) were recorded from midline scalp electrodes during a…

Examined the relationship of ability to conserve and comprehend of logical riddles in 33 first-, third- and fifth-grade boys of average intelligence. Although both riddle comprehension and cognitive maturity as assessed by Piagetian tasks increased with grade, the relation between them was not clearly demonstrated. (Author/JMB)

This study investigated the effects of stimulus presentation rate on primacy-recency effects in children. A modification of the Digit Span task used in the Binet and Wechsler intelligence scales provided the basic memory task administered to 56 male school children in grades kindergarten, second, fourth, and sixth. The specific design required…

It is suggested by this study that increases in moral judgment scores with age are related to increased generality of cognitive functioning. (Editor/CB)

The findings provide evidence that the learning disabled develop most cognitive abilities in a manner similar to that of their normal counterparts, though perhaps slightly delayed, and that by adolescence, development in the learning disabled approaches that of normals. (Author/DLS)

The goals and strategies formulated by 30 learning disabled (LD) and 30 non-learning disabled (NLD) males at two age levels (8 to 9 and 11 to 12 years) were analyzed. Subjects were interviewed regarding their strategies and goals in four situations involving peer interactions. They were also videotaped during a role play assessment of social…

Attempted to determine (1) whether children's performance on Luria-type delay tasks is related to social class, IQ, and age; (2) whether performance is consistent or reliable on different delay tasks and at different ages; and (3) whether children's performance is related to the type of delay task and length of delay interval. (Author/SB)