Learning disabilities in alcohol-dependent adults: a preliminary study

To determine if neuropsychological deficits, known to precede alcohol use in those genetically predisposed to alcoholism, were present in an alcoholic population, 25 male alcoholics (mean age 41.1) were interviewed concerning alcohol usage, educational difficulties in elementary school, and family history of alcoholism. Using a regression table, discrepancies between current IQ on the Wechsler Adult Intelligence Scale-Revised (WAIS-R) (Wechsler, 1981) and achievement on the Woodcock-Johnson Psycho-Educational Battery (WJB) (Woodcock & Johnson, 1977) were calculated to determine present learning status. Forty percent of the alcoholics were found to have had special education, remedial services, or repeated grade failure concurrent with a familial history of alcoholism and current discrepancies indicative of learning disability. There were no significant differences on intelligence, years of drinking, or mean grades completed in school between this group and the rest of the subjects who did not receive services in school. Conclusions were that childhood learning disorders may be related to the development of alcoholism, particularly when alcoholism is in the family, and that special educators have a role to play in the prevention and treatment of alcoholism.     

Developing POPTRAN,a population modelling package

Collaboration between subject matter specialists, computer programmers and educational technologists has resulted in the production of POPTRAN, a computer assisted learning package designed to teach the basic concepts of population studies. Its evaluation in developing countries, with both naive and specialist users, and subsequent revision, has produced a package of both academic quality and teaching effectiveness.     

Generalization of serial learning in the pigeon

Sequence learning in pigeons was studied in asimultaneous chaining paradigm: all stimuli and the opportunity to respond to each stimulus were available simultaneously. In contrast to the traditionalsuccessive chaining paradigm, a simultaneous chaining paradigm provides no differential feedback following each response (except the last). Subjects were first trained to perform on sequences of two (AB), then three (ABC), and then four colors (ABCD). Performance greatly exceeded that predicted by models of random choice. Generalization to novel arrays of three and four colors was complete. After training with a four-color sequence, the subjects were tested with subsequences consisting of all possible combinations of two and three of the four training colors (e.g., BD, AD, BC, ACD, BCD, etc.). The successful completion of these subsequences showed that the organization of the original sequence did not entail overt pecks to successive elements of that sequence. That subjects can respond accurately on nonadjacent subsets is not readily explained by a chaining theory, or by any theory that assumes that responding to element n provides a cue for responding to element n+1.     

Cross-cultural differences in maternal perceptions of cries of low- and high-risk infants

The tape-recorded cries of low- and high-risk newborn infants were rated by 150 inner-city Anglo-American, Black-American, and Cuban-American mothers during the hospital lying-in period following childbirth. Half of each cultural group was primiparous and half was multiparous. The mothers rated the cries along 4 perceptual and 6 caregiving response scale items. Reliable differences were found between low- and high-risk infant cries on all perceptual responses with the effects of culture and parental experience affecting the degree of differences. Generally, Anglo-American mothers found the cries more distressing, urgent, arousing, and sick sounding than Black-American mothers, while Cuban-American mothers showed similarities to both Black- and Anglo-American mothers depending on the scale items. The ratings on the caregiving response scale items paralleled cultural differences found on the perception scale items and previous reports of the mother-infant interaction patterns of other Anglo-, Black-, and Cuban-American samples. The results are discussed as being important in developing nonethnocentric views of the functional significance of the behaviors of the infant at risk, yet as providing evidence of the cross-cultural significance of the cry sound of the infant at risk.