Attempts to show that the purportedly scientific'' empirical basis of credentialism and I.Q.-ism'' is false; and to facilitate linkages between the groups who are being discriminated against the workers' movements within the white male labor force, by showing that the same mechanisms are used to divide strata against one another so as to…

Studies by the late English psychologist Cyril Burt of IQ scores of separated twins strongly suggested that intelligence was inherited. A summary of recent research costs doubt upon the validity of Burt's work. (SL)

Data are presented from families of monozygotic twin pairs which give evidence of genetic variance on the Block Design Test, a nonverbal measure of intelligence. Analyses of genetic and environmental effects on behavior are possible with this kind of information. (SA)

Reports a study which sought to discover, through a sampling of members of the A.P.A., the degree to which they agreed with Jensen's statements regarding racial differences in intelligence and their genetic basis, and to note the presence of any associations between the responses and other potentially relevant data. (Author/JM)

The issue of race differences in intelligence, especially with respect to American black and white populations, is adjudged to be "nonsensical" in terms of the framing of the question, the populations sampled, the testing instruments utilized, and the concept of "intelligence" postulated. (Author/EH)

Summarizes Arthur Jensen's theories on IQ, heritability, and Black intelligence and reviews some responses to Jensen. (JLF)

Reviews the furor and reaction to Arthur Jensen's controversial genetic theory of intellectual differences. The cases of Shockley, Eysenck, and Herrnstein are also discussed as instances in which intellectual debate was supplanted by academic persecution and impassioned rhetoric. (EH)

Intelligence tests were administered to a stratified sample of 4058 school children from Palermo, Sicily. I.Q. scores were found to be positively correlated with socioeconomic status and negatively related to family size. As birth order increased, mental development decreased. Implications for future research were discussed. (EH)

Comparing group intelligence according to racial or geographic orgin has neither social nor scientific value; the emphasis in education and the social economy is not the creation of equality but the development of each individual to his maximum performance. (Author/JM)

Finds that the available data for the heretability of intelligence is inadequate to settle the question conclusively. Argues that the benefits of diversity can only be realized if equality of opportunity is complimented by equality of status. (EH)

A classification of natal influences is proposed with a model of their operation. Natal influences affect maternal capacity, maternal load, and maternal efficiency. Since maternal load is increased in twin pregnancy, results of twin studies must be generalized with caution. The method of co-twin control is exemplified by examination of a small…