Proposes a theory of development in which experience is directed by genotypes and in which genotypic differences affect phenotypic differences, both directly and through experience, via three kinds of genotype-environment effects. The theory adapts the three kinds of genotype-environment correlations in a developmental model used to explain…

The article describes a study being conducted to explore the hypothesis that genetic and/or congenital factors are etiologically significant in certain persons with the syndrome of autism. Preliminary data suggest a larger than expected number of families with multiple incidence of autism. (Author/DB)

It is argued that animals, whether nutritionally replete or nutrient deprived, are not particularly adept at selecting a balanced diet when offered a number of alternatives of varying nutritive value and that the data have never actually indicated otherwise in spite of opinions to the contrary. (SLD)

Makes the case that "g" (general intelligence) can arise from the effect of shared genes influencing cognitive test performance and provides a simple mathematical demonstration of how this occurs. Predicts the need for a profound shift in the search for biological bases of "g." (Author/SLD)

The author hypothesizes that central nervous system damage of deficiency associated with mental retardation affects primarily those cortical processes which developed at a late stage in man's evolutionary history. (Author)

Reports on experiments conducted on two biological clocks, in organisms in the plant and animal kingdoms, which indicate that biological oscillation can be arrested by a single stimulus of a definite strength delivered at the proper time. (GS)

The author reviews theories and research on the etiology of infantile autism, specifically regarding its organic basis. He cites controversies over its organic vs. environmental basis and over the family's impact on autism. Quotes from such theoriests as L. Kanner, B. Bettleheim, and B. Rimland are presented along with E. R. Ritvo and M. Coleman.…

The review and analysis of the current status of knowledge about schizophrenia and its treatment begins with a brief review of some statistics on mental health, the National Institute of Mental Health's grants program in schizophrenia, an NIMH-sponsored international conference on Schizophrenia - the Implications of Research Findings for Treatment…

Most cases of drug toxicity are direct consequences of drug misuse--either intentional or inadvertent. Discusses two types of drug interaction--synergistic and antagonistic. The former produces a combined effect greater than the sum of the effects of the individual drugs concerned; the latter is produced when the desired action of one drug is…

This paper advances the bio-kinetic hypothesis that the Agent-action-Objective (AaO) axiom constitutes the only valid foundation for a behavioral expression of the informational dimensions contained in natural language. Based on the bookkeeping capacity of the discovered AaO mechanism, it is shown that this mechanism can capture emergent (AaO)…

Suggests the importance of including emotion and fantasy when a school curriculum is constructed. (Author)

The fundamental preclinical and clinical studies of serotonin, dopamine, and norepinephrine metabolism related to infantile autism are reviewed, and new studies are suggested, as examples of the productive strategies that will illuminate features of the autistic syndrome in the next decade. (Author)