This study is aimed at trying to discover the isolable characteristics of intelligence, of the kind of mental processes which result from it, and of the relationship between intelligence and the formation of concepts. (Author)

Data suggest an ability to use concrete-operational reasoning is not required for doing complex arithmetic, even though it may be necessary for learning these arithmetic skills. (Authors)

It was concluded that while retinoblastoma per se is not associated with intellectual superiority or inferiority, retinoblastoma associated with blindness may result in selective cognitive superiority. (Authors)

Analysis of the mental factors of seventh grade students indicates that numerical facility and perceptual speed are a single factor at this age level and that no purely verbal factor exists. Seven clearly differentiated factors are found for males and five for females. (Author/WY)

Results indicated that retarded Ss, relative to normal Ss of all ages, responded particularly slowly to static property statements when objects were animate, and to intrinsic-action properties when objects were inanimate. (Author/DLS)

The study compared the problem solving strategies of intellectually gifted (N=133), average (N=102) and mentally retarded (N=51) children on two-dimensional integration problems. Gifted children tended to integrate dimensional information by addition, average children used lexicographic strategies, and retarded children relied on a single…

This paper summarizes empirical findings of research on a theory of general mental ability, based on laboratory studies of the relationship between measurements of individual differences on conventional psychometric tests and in speed and efficiency of information processes. The paper covers characteristics of "g" (general mental ability),…

Paper contains research from author's doctoral thesis. (JM)

Determined if Wechsler Intelligence Scale for Children-Revised subtest patterns would differentiate the performance of emotionally disturbed and learning-disabled children. Subtests differentiated significantly between diagnostic categories. Learning-disabled children performed predictively poorer on block design, picture arrangement, and object…

Characterizes intelligence in terms of learning processes and uses the concepts and methods of other disciplines to understand how the conditions responsible for the development of its constituent processes and the manner of their organization lead to variations in effectiveness of intellectual functioning. (Author/JM)

United States Employment Service data on the cognitive and noncognitive aptitude requirements of different occupations were used to create an occupational classification--the Occupational Aptitude Patterns (OAP) Map. Thirteen job clusters are arrayed according to major differences in overall intellectual difficulty level and in functional focus…

Individual differences in visual recognition memory and intelligence were correlated using 52 five-year-olds whose IQs ranged from 40-136. The correlation between memory performance and IQ was .70 for whole sample, and .61 when children with IQs below 75 were omitted. Immediate recognition memory is highly associated with intelligence. (Author/RD)

Educable mentally retarded (EMR) and nonretarded (NR) adolescents verified superordinate and basic level descriptions of common objects. Results suggest that EMR subjects had difficulty making semantic classification decisions in general. Other results suggest that group differences in semantic processing speed were related to the deliberate…

The effects and interactions of 3 variables on concept learning and retention were investigated: (1) method of stimulus presentation; (2) learning process; and (3) intellectual ability. One hundred and forty-four (144) 4th graders were divided into 4 groups, each of which was further subdivided into high, middle, and low intellectual ability…

Three studies compared learning and problem-solving performances of normal and familially-retarded children on tasks differing in complexity, and one study investigated motivational-personality differences. Main purpose of the first three studies was to investigate the controversy between developmental and defect theorists in mental retardation.…