In an investigation of the contingent negative variation (CNV) in autistic children, when subjects were presented photos of familiar and strange persons normal children showed significant differences in negative potential activity related to familiarity of photos, while DC responses of autistic children did not vary with photo content. (KW)

Reviews the evidence of drug effects on the unborn, the chromosomal constituency of intersexuality, and the relationships between drug dependence and sexual inadequacy. The sexual effects of alcohol and smoking are discussed. Considers ethical and legal problems raised by the research. (AL)

Describes some unique features of marsupial reproduction which include (1) chromosomal sex determination, (2) reproductive system, (3) birth, (4) location, and (5) embryonic diapause. These features suggest that viviparity evolved separately in eutherian and marsupial stocks after their derivation from a common oviparous ancestor. Bibliography.…

Worry was found to be more highly negatively related to examination grades than was Emotionality or pulse rate and worry was more highly negatively related to expectancy than was Emotionality. However, pulse rate was no more highly related to Emotionality than to Worry, suggesting that questionnaire and direct measures of autonomic arousal are…

Considers current knowledge of the evolutionary origin, the development of the structure, the composition, and the morphogenetic regulation of chloroplasts. (AL)

The MAS was administered while drive level was systematically manipulated. Drive state was varied at four levels by the induced muscular tension technique while heart rate (HR) and galvanic skin response (GSR) activity were recorded. No meaningful relationship between MAS scores and HR and GSR activity was observed. The intercorrelation between HR…

This study is based upon a doctoral dissertation completed at the University of Southern California, 1965.

Examines teaching-style preference as a function of individual differences in physiological arousal/stimulation seeking. Reports responses of 29 teachers to the Sensation Seeking Scale, the Two-Flash Threshold, and a questionnarie. Shows low-arousal teachers tended to prefer a "traditional style" and high-arousal teachers tended to…

Running can be used effectively to produce positive physiological and psychological changes, including cardiovascular and physical fitness, reduction of anxiety, and more effective management of stress. (CJ)