Argues against the presence of dysgenic trends for IQ on the basis of absence of change in the differences between various groups. Illustrates this with an example of the numbers of children born to Black and to White women at different educational levels. Discusses the effects, mechanisms, and implications of dysgenesis for IQ. (MMU)

Spearman's hypothesis states that the differences between Blacks and Whites in psychometric IQ are attributable to a fundamental difference in general intelligence ("g"). To investigate this hypothesis, Jensen devised the method of correlated vectors. This method involves calculating the correlation between the factor loadings of the…

This research studied the interchangeability of individually administered and group administered cognitive tests. Seventy undergraduate students took the Hebrew version of the WAIS-R (Wechsler Adult Intelligence Scale-Revised), and their IQs were measured. They also took the IPET (Israeli Psychometric Entrance Test) and their IPET scores were…

An examination of the limitations of I.Q. testing, the dangers of misclassification, the moral issues of testing as well as some of the legal consequences of such mishaps. Several alternatives and recommendations are offered. (EH)

The controversy over the causes of intelligence--genetic or environmental--is reviewed. More specifically, the subject of the consistently lower intelligence scores for blacks is analyzed. Much attention is devoted to Jensen and his monograph published in the "Harvard Educational Review," entitled "How much can we boost IQ and scholastic…

The relationship of test wiseness to I.Q. and the usability of I.Q. scores are discussed. Test wiseness involves the examinee's ability to obtain a high score on a standardized achievement test as a result of utilizing test-taking experience. Usability of I.Q. scores refers to the value of I.Q. scores to educators in making educational decisions.…

A study was conducted to investigate the predictive validity of parents' ability to attend to their children (ATA) on intelligence and to determine to what extent ATA and social class variables, in combination, can account for the discrepancy in the IQ scores of children of different races. Ss were 700 Head Start children. The criterion variables…

Heritability is defined as the proportion of a manifested trait's varience that is due to genetic variation. Sixty-five pairs of twins were employed to investigate the heritability of: (1) short term memory (Jensen's Level 1), operationalized using of modified "digit span" test; (2) the general intellective factor (Jensen's Level II),…

Two experiments examined whether correlations between IQ and probed serial running memory depend on IQ-related individual differences in the retention of order information in short-term memory. Children's IQ correlated with memory, regardless of whether instructions emphasized serial or free recall; and with recent item but not recent order…

Scarr and Weinberg's results (Intelligence, 1977) are compared to those of similar adoption studies and found to be quite similar, despite the transracial adoption patterns in Scarr and Weinberg's sample. The author also suggests that the major contribution of behavioral genetics to psychology may be our increased understanding of the environment.…

Thorndike's Stanford-Binet data suggest that from 1932 to 1971-72 preschool children enjoyed greater IQ gains than older children, possibly due to the rise of television. Additional analysis indicated that gains were either due to sampling error or totally antedated 1947. Gains of 12 IQ points were found for Americans. (Author/EGS)

Children referred for psychological evaluations of completed the Bender-Gestalt and then reproduced designs from memory. Numbers of designs recalled increased with age and Performance Intelligence Quotient. The importance of developmental level in evaluation and establishment of cut-off recall scores for designs were discussed. (Author/RD)

Zajonc and Bargh's (EJ 241 537) application of the confluence model to six national data sets is critiqued. Extreme differences in intelligence levels are predicted between nations, including substantial retardation for some populations. Moreover, the parameter values used do not allow mental growth functions which are consistent with previous…