The study reported here compares the performance on a mental ability test of children in grades two and three from homes in which English is the language spoken with those from homes in which Spanish is the language used. During the Spring semester, the InterAmerican Tests of General Ability, Level Two, and their Spanish parallel, were…

This research is, in part, a study of a method of differentiating between two different types of retardation (the exogenous or brain injured and the endogenous or non-brain injured). However, this paper is also an example of the evaluation of a research problem, for it incorporates data and information from three different studies, each of which…

Current research indicates the possible influence of IE development on cognitive development. Efforts are being made to identify behaviors by which parents or teachers can increase development of internal control expectancies in preschool children. Studies correlating children's IE scores with various mother behaviors or mother-child interaction…

"Psychological Assessment in Education and Social Class," a paper presented at the University of Missouri conference on the "Legal and Educational Consequences of the Intelligence Testing Movement: Handicapped and Minority Group Children," is provided. The historical origins of the scheme of norm-referenced testing and the evidence questioning its…

Scores on the Wechsler Adult Intelligence Scale (WAIS) were compared with reevaluation scores obtained four years later on the WAIS-Revised for a group of 108 mildly and moderately retarded adults. The moderately retarded subgroups (N=22) demonstrated significantly higher WAIS-R intelligence quotients. Implications for use of the WAIS-R are…

Sixteen individuals with autism and sixteen with Down's Syndrome, aged 10-29, were matched for verbal mental age. The groups' scores did not differ on the Vineland Adaptive Behavior Scales. However, the adaptive skills of Down's Syndrome individuals kept pace with mental age, while the skills of autistic subjects did not change. (Author/JDD)

Groups of retarded and nonretarded children were investigated as they learned three rules underlying problems adapted from the Raven Progressive Matrices Test: rotation, imposition, and subtraction. Results were seen as consistent with theories that emphasize transfer flexibility as one potential source of individual and comparative differences in…

Urban and rural Aboriginal- and Anglo-Australian children were tested for reading and math achievement, for nonverbal psychometric test intelligence, and for three cognitive styles. Psychometric intelligence was clearly a more powerful predictor of the effects of culture and location on school achievement than was cognitive style. (Author/CMG)

Groups of mentally retarded subjects matched for sex, chronological age, mental age, and length of institutionalization were observed on three reaction time tasks for which pre-response complexity varied. Down's Syndrome subjects did not differ from epileptic and undifferentiated retarded subjects in reaction time performance on any of the tasks.…

A reply to Plomin's critique and some criticisms of Munsinger's review of adopted child literature are presented. Selective bias in adoptee samples, implicit assumptions in models that lead to heritability estimates, and problems produced by lack of an accepted model of environmental transmission are also discussed. (Author/RD)

Current studies of cognition emphasize the contrast between two approaches to analysis of individual differences. It is concluded that the cognitive components approach incorporates the cognitive correlates approach, avoids the inadequacy of correlational methods, and models individual differences on various dimensions of cognitive functioning.…

Responds to Dunn's paper on Hispanic-Anglo differences in IQ scores. Argues that vocabulary use influences ethnic group IQ scores, that mainland Hispanic-American vocabulary scores decline after school entrance, and that native language proficiency achieved in a true bilingual program facilitates acquisition of English language skills. Contains 34…

Responds to Dunn's monograph on Hispanic-Anglo differences in IQ scores. Discusses the cultural/linguistic bias in IQ tests, and the inevitability of this bias due to methods of test development and standardization. Criticizes Dunn's proposal for English immersion programs to replace bilingual education. Contains 21 references. (Author/SV)

Maintains that intellectual ability has become a more important determinant of occupational success in recent decades, resulting in increased social class differences. Finds that, contrary to the usual view, class differences have become smaller and current social problems cannot be ascribed to low-ability people in the lower classes. (CFR)

Urges educators and citizens to ignore the hype surrounding "The Bell Curve" and to grasp the ethnocentrism (or racism) that underlies eugenicist arguments. Both Carnoy and Ladson-Billings offer hope to those supporting educational equity and the appreciation of diversity. (SLD)