Subjective contours in stereoscopic space

Stereoscopic depth and subjective contour clarity were manipulated by varying the type of monocular configuration as well as magnitude and direction of disparity. The clarity of the subjective contours was influenced significantly by both magnitude and direction of disparity and by the type of monocular configuration. Subjective contours were always less clear when the objective monocular contour was discontinuous regardless of disparity. Stereoscopic depth estimates varied directly with magnitude and direction of disparity; however, depth magnitude reports were truncated when the disparity was carried by discontinuously defined patterns.     

The psychosocial factors of the abortion experience: a critical review

The literature on the psychosocial factors of abortion is critically reviewed. It is concluded that due to faulty methodology no general statements can be made about these factors for women receiving illegal abortions. It appears that the data showing that women receiving therapeutic abortions experienced favor- able psychological conseuqences are stronger than the data indicating negative consequences. Studies of abortion on request, which, for the most part, have been methodologically sound, indicate that the new abortion patients are mostly young, unmarried women who are not in a social position to bear and care for a child. They tend to end their pregnancies for social and economic reasons. Further, they are either not aware of or not concerned about the possibility of getting pregnant at the time of intercourse, or they have a contraceptive failure. Finally, the psychological consequences of abortion on request appear to be most1 y benign.     

Research support from the office of Naval Research

The operation of the Psychological Sciences Division of the Office of Naval Research is described briefly. Guidance is provided for prospective proposers of research to that division.     

Perceptual comparisons of adolescent stutterers' and nonstutterers' fluent speech

Numerous investigators have reported that listeners are able to perceptually differentiate adult stutterers' and nonstutterers' fluent speech productions. However, findings from similar studies with children ranging in age from 3 to 9 yr have indicated that perceptual discrimination of child stutterers is difficult. A logical extension of this line of investigation would be to determine when during maturation from childhood to adulthood stutterers' fluent speech becomes perceptibly different than nonstutterers'. Therefore, in this study similar fluent speech samples from seven 12–16-yr-old adolescent male stutterers and seven matched nonstutterers were analyzed perceptually in a paired stimulus paradigm by 15 sophisticated listeners. Individual subject analyses using signal detection theory revealed that five of the seven stutterers were discriminated. When averaged for subject group comparison, these findings indicated that listeners successfully discriminated between the fluent speech of the two groups. Therefore, the perceptual difference in fluent speech production reported previously for adults appears to be present by adolescence.     

The topography of aggressive behavior of an attacking rat is determined by the behavior of the victim

Untreated rats were observed to either bite or box with Pentobarbital-treated opponents in a shockelicited aggression situation. Specific behaviors such as ataxia movements and submissive postures immediately preceded biting attacks, but rarely boxing whereas behaviors such as moving around the chamber and upright threat postures immediately preceded boxing attacks, but rarely biting. These data suggest that the topography of aggressive behavior of an attacking rat is determined by the behavior of the victim.     

The institutionalization of sociological paradigms: Three examples from early French sociology

Utilizing a model of sociological paradigms which encompasses the cogency of sociological theories, their congruence with their cultural milieu and their reinforcement through institutionalization, this paper examines three interpretations of sociology which competed for recognition in France at the end of the nineteenth century. René Worms created institutions for the new field of new field of sociology, but did not possess a viable sociological theory with which to make these institutions effective in advancing the discipline. Gabriel Tarde possessed a sociological theory and opportunities to institutionalize it, but failed to do so because of a pre-modern attitude toward science. Only Emile Durkheim was able to successfully institutionalize his conception of sociology through his teaching career and his journal, L'Année sociologique.