Perceiving the sex and race of faces: the role of shape and colour

Theories of object recognition have emphasized the information conveyed by shape information, whereas theories of face recognition have emphasized properties of superficial features. In the experiments reported here we used novel technology to investigate the relative contributions of shape and superficial colour information to simple categorization decisions about the sex and 'race' of faces. The results show that both shape and colour provide useful information for these decisions; shape information was particularly useful for race decisions while colour dominated sex decisions. When both sources of information were combined, the dominant source depended on viewpoint, with angled views emphasizing the contribution of shape and the full-face view colour. The results are discussed within the context of theories of face recognition and their implications for telecommunication applications are considered.     

Sex role identity and its relationships to sex role attributes and sex role stereotypes.

Examines J. Kagan's (1964) and L. A. Kohlberg's (1966) theories of sex role identity. Both premise relationships among an individual's sex role identity, perception of sex role stereotypes, and own masculine and feminine sex role attributes, but the theories specify different patterns of correlations among these variables. Kagan's theory views sex role identity as the product of the mutual influence of stereotypes and attributes, whereas Kohlberg's posits sex role attributes as the product of the stereotypes and identity. 104 male and 110 female college students were administered measures of each variable including the Personal Attributes Questionnaire (PAQ), modified versions of PAQ to measure stereotypes of men and women, and a measure of sex role identity developed by the present author. Results indicate an overall relationship between sex role identity and the other 2 variables. Results generally support Kohlberg's theory over Kagan's. Significant correlations were found where Kohlberg's theory would predict a relationship—between sex role stereotypes and sex role attributes. Nonsignificant correlations were found where Kagan's theory would predict a relationship—between sex role stereotypes and sex role identity. Results are compared to findings by J. T. Spence et al (1975), and questions are raised about the psychological constructs underlying measures of sex role attributes. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Laterality effects in the processing of melody and timbre

Laterality for the processing of melody and timbre was investigated in 64 right-handed non-musicians. In one block of dichotic-listening trials, participants listened for a prespecified target melody, and in a second block they listened for a prespecified target instrument. Females were more accurate on the left ear in the melody task (whereas males tended to show no ear advantage), but there were no significant ear differences in the timbre task for either sex. This supports the idea of a complementary sex-based pattern of lateralization, with males more strongly lateralized for verbal stimuli and females more strongly lateralized for non-verbal stimuli. No relation was observed between lambda measures for the two tasks, suggesting that laterality for melody processing is independent of laterality for timbre processing.     

Ego identity, intimacy, sex role orientation, and gender.

Assessed identity and intimacy in 40 male and 40 female university students, using a semistructured interview and a rating manual. Ss were also administered the Bem Sex-Role Inventory. Results show that for males, identity was related to masculinity and intimacy was related to femininity. For females, identity was also related to masculinity; there were more high-intimacy females than males. While high identity/high intimacy was not contingent on androgyny (as hypothesized), proportionately more androgynous than nonandrogynous Ss were in this category. Results lend support to the hypothesis that it is desirable and beneficial for each sex to integrate aspects of the other gender's sex type. (36 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Perceiving the width and height of a hand-held object by dynamic touch.

The haptic perceptual subsystem of dynamic touch is prominent in manipulating and transporting objects, providing a nonvisible awareness of their linear dimensions. The hypothesis that perceptions of object width and height by dynamic touch are different functions of the inertia tensor is addressed. In two experiments heights and widths of nonvisible wielded objects were judged separately. Experiment 1 used solid rectangular parallelepipeds of different sizes; Experiment 2 used objects of identical mass and linear dimensions but nonidentical inertia ellipsoids. Width and height perceptions of comparable reliability and accuracy were found to vary as distinct functions of the objects' inertial eigenvalues. Discussion focused on the notion of tangible shape and on the selectivity of attention within dynamic touch. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Perceptual integrality of sex and identity of faces: Further evidence for the single-route hypothesis.

According to current face-recognition models, sex (gender) and identity of faces are processed in independent routes. Using Garner's speeded-classification task, the authors provide evidence that sex and identity are processed within a single route. In 4 experiments, participants judged the sex or the familiarity of faces while the other dimension remained constant or varied randomly. The results of Experiments 1, 2, and 4 showed that participants could not selectively attend to either sex or familiarity without being influenced by the other, irrelevant dimension. Thus, identity and sex are integral dimensions. Experiment 3 provided evidence that when sex judgments are based on hairstyle heuristics, false separability can emerge. The findings support the claim that identity and sex are processed within a single route. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Perceiving the Intensity of Light.

The relationship between luminance (i.e., the photometric intensity of light) and its perception (i.e., sensations of lightness or brightness) has long been a puzzle. In addition to the mystery of why these perceptual qualities do not scale with luminance in any simple way, "illusions" such as simultaneous brightness contrast, Mach bands, Craik-O'Brien-Cornsweet edge effects, and the Chubb-Sperling-Solomon illusion have all generated much interest but no generally accepted explanation. The authors review evidence that the full range of this perceptual phenomenology can be rationalized in terms of an empirical theory of vision. The implication of these observations is that perceptions of lightness and brightness are generated according to the probability distributions of the possible sources of luminance values in stimuli that are inevitably ambiguous. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Facial attractiveness, physique, and sex role identity in young children.

Examined the effects of facial attractiveness and physique on sex-role identity and constancy in 74 middle-class 3-9 yr olds. Measures included Ss' sex-role orientation, sex-role preference, sex-role adoption, parent salience, gender recognition, and sex-role constancy. Ratings for facial attractiveness and the ponderal index for body type were completed for each S. Analysis of variance using age, sex, and facial attractiveness as factors revealed no significant main effects for facial attractiveness on any of the measures. Interactions did appear, however, for Sex * Attractiveness * Age on sex-role adoption and for Facial Attractiveness * Sex on gender recognition. Analyses of variance for physique effects resulted in significant interactions of Physique Type * Age on both gender recognition and sex-role preference. Sex differences were present for sex-role orientation, preference, adoption, and parent salience, but not for gender recognition or sex-role constancy. Age differences appeared for sex-role orientation, preference, adoption, constancy, and gender recognition. Overall results fail to support the hypothesis that physical attractiveness and body stereotypes significantly influence sex-role development. It is concluded that these attributes may influence a child's perception of others, but they do not necessarily affect the child's gender assignment of others. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Repetition priming for familiar and unfamiliar faces in a sex-judgment task: Evidence for a common route for the processing of sex and identity.

Repetition priming for faces was examined in a sex-judgment task given at test. Priming was found for edited, hair-removed photos of unfamiliar and familiar faces after a single presentation at study. Priming was also observed for the edited photos when study and test faces were different exemplars. Priming was not observed, however, when sex judgments were made at test to photos of complete, hair-included faces. These findings were interpreted by assuming that, for edited faces, internal features are attended, thereby activating face-recognition units that support performance. With complete faces, however, participants provided speeded judgments based primarily on the hairstyle. It is suggested that, for both familiar and unfamiliar faces, a common locus exists for the processing of the identity of a face and its sex. A single face-recognition model for the processing of familiar and unfamiliar faces is advocated. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relation between testosterone concentration, sex role identity, and personality among females.

84 female undergraduates completed measures of masculinity and femininity derived from the California Personality Inventory, the Bem Sex-Role Inventory, and the Adjective Check List. Testosterone (T) concentration was determined from saliva samples. Results indicate that sex-role type was related to level of T concentration. Undifferentiated Ss had much higher levels of T concentration than did feminine Ss, and androgynous and masculine Ss had somewhat higher T levels than did feminine sex-typed Ss. Adjectival correlates indicated that Ss with higher T concentrations perceived themselves as self-directed, action-oriented, and resourceful; those with lower T concentrations viewed themselves as conventional, socialized individuals, possessing a caring attitude coupled with an anxious and dejected mood. (50 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Acoustic differences, listener expectations, and the perceptual accommodation of talker variability.

Two talkers' productions of the same phoneme may be quite different acoustically, whereas their productions of different speech sounds may be virtually identical. Despite this lack of invariance in the relationship between the speech signal and linguistic categories, listeners experience phonetic constancy across a wide range of talkers, speaking styles, linguistic contexts, and acoustic environments. The authors present evidence that perceptual sensitivity to talker variability involves an active cognitive mechanism: Listeners expecting to hear 2 different talkers differing only slightly in average pitch showed performance costs typical of adjusting to talker variability, whereas listeners hearing the same materials but expecting a single talker or given no special instructions did not show these performance costs. The authors discuss the implications for understanding phonetic constancy despite variability between talkers (and other sources of variability) and for theories of speech perception. The results provide further evidence for active, controlled processing in real-time speech perception and are consistent with a model of talker normalization that involves contextual tuning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Perception of pitch and timbre by musically trained and untrained listeners.

Investigated how musicians and nonmusicians differentially perceive the dimensions of pitch and timbre. A categorization task was used in Exp 1 to assess Ss' ability to identify how 2 consecutively presented tones changed along these dimensions. A speeded classification task was used in Exp 2 to measure Ss' ability to ignore or take advantage of information in one dimension while attending to the other. The 2 groups differed in the degree to which variation along the dimensions influenced responses. Timbre variation affected nonmusicians' judgments of pitch more than the reverse. Musicians showed no such asymmetry. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Stereotypic and nonstereotypic sex role trait and behavior orientations, gender identity, and psychological adjustment.

This study examines the relations among sex role traits and behavior orientations, gender identity, and psychological adjustment in order to test traditional and contemporary perspectives regarding the adjustment implications of stereotypic and nonstereotypic sex role trait and behavior orientations. Measures of sex role personality traits and behaviors and scales assessing depression, anxiety, and social maladjustment were administered to 235 college men and women. In addition, subjects completed measures of gender identity and gender adequacy. Contrary to traditional perspectives, androgynous men and women and cross-sex-typed women were no less well adjusted than sex-typed individuals. However, consistent with traditional perspectives, men who were low in masculine characteristics (and men and women low in both masculine and feminine characteristics) did appear less well adjusted on measures of depression, anxiety, and social maladjustment. Furthermore, low masculinity men had less secure gender identities. No such gender identity disturbances were found in women. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Career involvement of women in dual-career families: The influence of sex role identity.

Studied the influence of sex-role identity on the career involvement of 70 25–45 yr old professional women who were members of dual-career families that included young children. As predicted, Ss categorized as masculine on the Personality Research Form, ANDRO scales, were employed a significantly greater proportion of time after having children than Ss categorized as feminine. In addition, the more equalitarian the marriage, the more likely S was to continue her career participation after having children. Regardless of employment status and the equalitarianism of the marriage, Ss reported that they spent significantly more time alone with their children than their husbands did. Implications for various counseling situations are noted. (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Characterization of serum ferritin in iron overload: possible identity to natural apoferritin

Serum ferritins from a patient with haemochromatosis and from a patient with transfusional siderosis were compared with tissue isoferritins on the basis of their iron content, isoferritin spectrum and immunological properties. Both serum ferritins had a low iron content and corresponded to only the most basic isoferritins in liver. The serum ferritins were very similar to the natural apoferritin from liver in all respects.     

Sex without emotional involvement: an evolutionary interpretation of sex differences

Two samples of male (n = 243) and female (n = 298) college students completed sexual surveys, and in-depth, oral interviews were conducted with 28 highly sexually active female college students. Findings supported five predictions derived from evolutionary (parental-investment) theory. Even when females voluntarily engaged in low-investment copulation, coitus typically caused them to feel emotionally vulnerable, and to have thoughts expressing anxiety about partners' willingness to invest. For females, increasing numbers of partners correlated positively with the incidence of these feelings and thoughts; for males, these correlations were negative. Females' attempts to continue regular coitus when they desired more investment than partners were willing to give produced feelings of distress, degradation, and exploitation despite acceptance of liberal sexual morality. Increasing numbers of partners did not mitigate these reactions in females and may exacerbate them. Multiple-partner females developed techniques for dealing with their emotional reactions to low-investment copulation: They frequently tested their partners for signs of ability and willingness to invest (e.g., dominance, prowess, jealousy, nurturance), and they limited or terminated sexual relations when they perceived partners' investment as inadequate. Results were consistent with the view that the emotional-motivational mechanisms that mediate sexual arousal and attraction are sexually dimorphic.     

Perceiving the causes of success and failure of male and female performers.

Studied sex differences in attributions of ability, effort, task difficulty, or luck given by 320 Ss at 4 grade levels (5th, 8th, and 11th grades and college) to the outcomes of 4 masculine tasks performed by either male or female actors. Results suggest that differential perceptions of male and female performances appear to be well established in both boys and girls by the 5th grade. (PsycINFO Database Record (c) 2010 APA, all rights reserved)