This study investigated the factor structure of the 10 subtests of the Career Maturity Inventory (CMI). Although two principal factors emerged, the CMI Competence and Attitude subtests did not load distinctly on the two separate factors. Results also tended to indicate that the discriminant validity of the CMI may be minimal. (PN)

A study of 18 Down Syndrome and 18 other mentally retarded adults found evidence of a significant erosion of Wechsler Intelligence Scale for Children scores from the third to fourth decades of life. The Block Design subtest was especially vulnerable to performance decline with age in the Down Syndrome adults. (Author/JDD)

Platelet serotonin (5HT) levels of 5 autistic subjects (ages 16-37) who had siblings with either autism or pervasive developmental disorder were significantly higher than levels of 23 autistic subjects without affected siblings. Autistic subjects without affected siblings had 5HT levels significantly higher than 10 normal controls. Sex, age, and…

The confluence model of cognitive development was tested on 7,060 children. Family size, sibling order within family sizes, and hypothesized age-dependent effects were tested. Findings indicated an inverse relationship between family size and the cognitive measures; age-dependent effects and other confluence variables were found to be…

A study investigated variables that differentiated 75 successful and 76 unsuccessful students (ages 6-16) with serious emotional disturbances (SED). Four variables emerged as significant predictors of the unsuccessful outcome group: increasing enrollment age, presence of conduct or opposition disorder, lower verbal IQ, and absence of depressive or…

Although maladaptive and compulsive behaviors are increasingly well-described in young persons with Prader-Willi syndrome, it is unclear how these problems manifest in older adults with this syndrome. In Part I, I compared maladaptive and compulsive behaviors in 45 older adults with Prader-Willi syndrome (ages 30 to 50 years) to 195 children,…

Psychological data were analyzed for 164 individuals (ages 3-15) with autism (IQs 14-143). Verbal IQ lagged behind nonverbal during the preschool years, but by school age the gap had closed. For school-age children with low IQs, math, spelling, and writing scores were consistent with IQ and reading was above IQ. (Contains references.) (Author/CR)

A prospective longitudinal investigation related 76 maternal and infant variables to performance on the Metropolitan Readiness Tests (MRT) at age six. The 1,245 study subjects have been followed since birth. Their distribution on measures of intelligence and socioeconomic status is essentially normal. Subjects with high MRT scores were found to…

This study investigates the effect of curiosity in first and second grade children as an individual difference variable in learning in a computer-based interactive learner control environment and discusses the implications for instructional designers and educators. The instruction was an art education lesson containing both facts and concepts. The…