This study of 6,007 males born in northern Finland in 1966 found that 6% acquired a criminal record between 15 and 22 years. A higher than average delinquency rate was found among those with lower socioeconomic status, especially when combined with low intelligence. Family social problems had a greater predisposing effect for delinquent behavior…

Three psychophysical auditory processing tests, varying in emphasis on speed of processing and pitch discrimination, and tests of verbal and nonverbal ability were administered to 108 13-year olds. A structural equation model suggests that information processing speed and pitch discrimination ability are significantly associated with nonverbal and…

This study examined the social adjustment and self-concept of 81 adults (18 to 26 years of age), of whom half had received special education services for learning disabilities. No significant differences were found between groups on social adjustment or self-concept scales. Achievement and IQ measures, collectively, were good predictors of global…

Because they used an inappropriate statistical procedure, J. H. Kranzler and A. R. Jensen (1991) have not demonstrated that a factor of general intelligence ("g") depends on several independent factors. A factorial reanalysis of their data suggests that speed and efficiency of information processing are important in "g." (SLD)

The hypothetical idea of a perfectly pure psychometric "g" is empirically unattainable. Because the unity of "g" cannot be proved or disproved by factor analysis, the unitary "g" hypothesis represents a parsimonious assumption. J. B. Carroll's (1991) analysis demonstrates the relationship between psychometric and…

Eighteen children (mean age 10.2 years) with mild mental retardation were pretested on a variety of measures and then instructed on Piagetian concepts twice per week for 4 months via a learning set technique. When posttested at semester's end, the children had, with few exceptions, mastered the concepts and made significant gains on the Peabody…

The study contrasted personality and intellectual characteristics of 3 groups of 16 children: a group molested by a teacher, a molested by a family member, and a nonmolested control group. There were few differences between the two molested groups or between boys and girls. Significant differences were found between molested and unmolested…

The question as to whether males and females have different kinds of intellectual abilities is addressed. The evidence that there are some differences in cognition and perception between men and women is reviewed. (KR)

A 34-hour Restricted Environmental Stimulation Therapy (REST) session was employed as the intervention for the reduction of autistic symptoms of 12 children, aged 6-20 years, with IQ used as a matching variable. Significant within-group, positive effects of REST were found for older subjects and for less severely autistic subjects. (SH)

Studied structure of Stanford-Binet: Fourth Edition for normal children who were not part of standardization sample. Found that, for children aged 2-6 years, either 2- or 3-factor model could be supported. For students aged 7-11, neither of 2 models studied was supported. Alternative model with verbal reasoning, quantitative reasoning,…

Difficulties inherent in differentiating practice effects from meaningful change in neuropsychological retest data are illustrated in this case study of a personal injury case. Although the patient demonstrated substantial gains on the Wechsler Adult Intelligence Scale Revised, most of the tests given on successive days did demonstrate acceptable…

Analysis of Wechsler Intelligence Scale for Children (Revised) profiles of 456 grade 3 students with Intelligence Quotients of 120 and above found subtest scatter, verbal-performance discrepancy, and idiographic variability to be common and normal. Differences were identified in subgroups according to verbal or nonverbal strengths and gender. (DB)

Structure of measures of speed was studied by conducting simultaneous confirmatory factor analysis for 1 sample of 149 elderly adults and a sample of 147 young adults using 16 measures of speed. Five first-order factors of speed were found, as hypothesized, and three second-order speed factors were necessary. (SLD)

The Autism Diagnostic Interview was used to assess the difference between a group of 21 males and 21 females (ages 6-36) with autism with equivalent chronological nonverbal intelligence quotients greater than 60. Males were rated more severely autistic than females on several measures of early social development but not in other areas such as…

Investigated relationship of Peabody Picture Vocabulary Test-Revised (PPVT-R) to academic achievement. PPVT-R was correlated with Wide Range Achievement Test-Revised and Wechsler Intelligence Scale for Children-Revised. Findings from 181 elementary school children referred for special education evaluation suggest that the PPVT-R could be used to…