The role of three-dimensional depth cues in infants' perception of partly occluded objects

Newborn infants were familiarized to a three dimensional display consisting of a rod which moved behind a central occluder, so that only the top and bottom of the rod were visible. The infants' eyes were 38 cm from the rod and the occluder was 15 cm in front of the rod, a separation intended to ensure that the gap between the two was detected by the infants. On subsequent test trials the infants looked longer at a complete rod than at two rod pieces, suggesting that the hidden unity, or completeness of the rod had not been perceived. In a study by Johnson and Náñez (in press), using computer. generated stimuli, 4 month olds perceived the hidden unity of a similar display presented on a VDU in the complete absence of three. dimensional depth cues. Taken together, these findings suggest that, for these displays, perception of three. dimensional depth cues is not necessary for the detection of the unity of partially hidden objects. It is suggested that age changes in early infancy in the perception of occluded objects may result either from the emergence of abilities to perceive objects from kinematic information or from the emergence of sensitivity to that information itself.     

Using the PET microcomputer

This paper describes advantages and disadvantages of the PET microcomputer for use by behavioral scientists. User groups and second-source hardware-software vendors are noted. It is emphasized that the large production volume of the PET is apt to lead to a proliferation of second-source add ons at modest prices.     

Masculinity—Femininity in children's self-concepts: The relationship to teachers' judgments of social adjustment and academic ability,classroom behaviors,and popularity

This study explored the response of peers and teachers to children who differed in the extent to which their self-concepts included traits which children view as masculine or feminine. It was hypothesized that teachers would judge relatively more masculine children to be inferior in (1) academic ability and (2) social adjustment compared to more feminine children, and that these relationships would be independent of IQ. Relationships between masculine—feminine self-concept and observable classroom behaviors were examined, particularly the impact of classroom behavior on teachers' evaluations of masucline versus feminine children. Finally, the relationship between masculine—feminine self-concept and popularity was studied. Subjects were 64 middle-class fourth and fifth graders. For boys, the hypotheses were supported for evaluations made by seven women teachers. Evaluations made by one man teacher did not support the hypotheses. Neither hypothesis was supported for girls. Among boys, relative masculinity was associated with a distinctive pattern of classroom behavior, and this statistically accounted for women teachers' negative evaluations of the more masculine boys. For boys, the relationship between popularity and masculine—feminine self-concept differed significantly between classroom settings; while for girls there were no significant relationships. Methodological issues, sex differences in the importance of sex-typing of self-concept, teacher sex differences, and implications for mental health are discussed.The author acknowledges the invaluable assistance of the following persons: Kevin McClearey assisted in the initial development of the observation procedure; Jessica Broitman and Dennis Quintana conducted the observations; Dennis Quintana assisted in developing the items for the masculine—feminine self-concept questionnaire; Ms. Judy Hermann, Principal, offered cooperation in the school setting; Drs. William Hodges and Donald Weatherley offered criticisms of an earlier version of this paper. An earlier, condensed version of this paper was presented at the meeting of the Western Psychological Association, Los Angeles, 1976.     

A family study of memory processes and their relations to cognitive test scores

Members of 118 families (456 individuals) who had been tested on several measures of cognitive ability were retested on the same battery in order to determine test-retest reliability. They then were administered the Wechsler Adult Intelligence Scale and tests of visual memory, auditory memory, and figure memory, as well as other measures not discussed herein. Intercorrelations of memory tasks were low to moderate. Factor analysis resulted in a four factor solution. The different factors appeared to represent auditory sequential memory (Factor I); visual memory, as measured psychometrically (Factor II); visual memory, as measured experimentally (Factor III); and figure memory (Factor IV). A second order factor analysis yielded two factors, one consisting of basically psychometric measures of memory and the other of measures of memory obtained in the experimental psychological tradition. Memory measures generally showed low to moderate positive correlations with scores on the cognitive test battery. Significant spouse correlations were found for 3 of the 11 measures of memory. Significant midparent-midchild regressions were found for 9 of the 11 memory measures.     

Some cognitive aspects of figurative language: Association and metaphor

This study was designed to explore the relationship between some predictions generated by a cognitive-feature model of association and metaphor understanding. Several kinds of data were collected from University of Tennessee undergraduates on the two key nouns in each of 28 randomly selected metaphors—both in and out of metaphor context—as well as judged goodness and ease of writing interpretations for the metaphors themselves. Interword similarity, free association variability, and characteristics of common property distributions for key-noun pairs were highly intercorrelated (as predicted by the associative model) and also related to metaphor goodness and difficulty of metaphor interpretation (canonical r=0.78). These results provide indirect support for the associative model and also provide some insight into the cognitive processes underlying metaphor understanding.     

Self-rated adjustment and sex-typing on the Bem Sex-Role Inventory: Is masculinity the primary predictor of adjustment?

Questions concerning the relationship between self-rated adjustment and the Bem Sex-Role Inventory (BSRI) were examined in two studies. In Study I, whether sex-typing was defined by Bem's original t-test criterion or the newer median-split criterion, superior adjustment was associated with androgynous vs. traditional typing only among women, not men. Also in conflict with the androgyny position, adjustment differences among sex-types were accounted for by differences in masculinity, not in femininity or androgyny per se. The greater contribution of masculinity vs. femininity to self-rated adjustment may be exaggerated because BSRI femininity includes items which do not load on a unidimensional femininity factor. In Study II, inspection of these unrelated items suggested that they reduce the desirability of BSRI femininity, thereby reducing its relationship to adjustment. Comparisons between standard BSRI scoring and an alternative based on unidimensional subscales revealed that the alternative femininity subscale was judged to be more desirable, and it reduced the degree of difference between masculinity and femininity in their relationships to adjustment. Superior adjustment, however, was again associated with androgynous vs. traditional sex-typing only among women, and adjustment differences among sex-types were again accounted for by differences in masculinity.The authors acknowledge the assistance of the following persons who helped in the administration, scoring, or preparation of questionnaire materials: Jill Jamison, Eric Isberg, Kay Peter, Steve Zalinger, Walter Davis, James Ball, Mark Jensen, and Heidi Sanft. Correspondence should addressed to Dr. Louise Silvern, Psychology Department, University of Colorado, Boulder, Colorado 80309.