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41.
We examined the influence of the height of the internal features of faces on adults' ratings of attractiveness and on 5-month-olds' looking times. Subjects viewed drawings or coloured photographs of faces presented in pairs that were identical except that the internal features were at a low height, with a large forehead and small chin; at a high height, with a small forehead and large chin; or at a medium height. Adults rated faces with their features at the medium and low heights as more attractive than faces with their features at the high height, and, at least for drawings, rated faces with medium features as more attractive than faces with low features. Babies looked equally long at faces with their features at various heights except for looking slightly longer at faces with high rather than low features. The results suggest that the influence of feature height on reactions to faces is different for adults and 5-month-olds, and hence that it may be shaped by cultural learning and/or experience with faces sometime after early infancy. 相似文献
42.
In two experiments, we investigated the influence of eye size on adults' ratings of faces' attractiveness and 5-month-olds' looking times. Subjects viewed four pairs of female faces that were identical except for the size of the eyes. Whether they saw black-and-white drawings (experiment 1) or coloured photographs (experiment 2), adults rated the faces with larger eyes as more attractive than the faces with smaller eyes. Babies looked equally long at the drawn faces with larger and smaller eyes (experiment 1), but with the more realistic photographed faces, they looked slightly but significantly longer at the versions with larger eyes (experiment 2). Overall, our results suggest that a modest preference for larger eyes that has emerged by 5 months of age may contribute to the development of adult aesthetic preferences. 相似文献
43.
An Exploration of Cognitive Demands in Group Interaction as a Moderator of Information Processing Variables in Perceptions of Leadership 总被引:1,自引:0,他引:1
In the application of information processing (IP) models in organizational settings, potential boundary or moderator variables are sometimes overlooked. We investigated whether the impact of important IP variables in the leadership perception literature was affected by a potentially important boundary variable: cognitive demands extraneous to impression formation. In contrast to past research, both quantity and quality (prototypicality) of behavior affected leadership perceptions in both low and high information load conditions. This result implies that prototype-related processing may be automatic enough to influence perceptions of leadership in actual organizational settings where cognitive demand is often high. Further, quantity of verbal behavior had a significant impact on causal attributions for level of group task performance and on perceptions of control of the groups'activities, suggesting that this variable may have important implications for inferences about a person's influence on work group processes and outcomes. The significance of these findings for the issues of leader influence and for the measurement of leader behavior is discussed. 相似文献
44.
Newborns' discrimination of chromatic from achromatic stimuli 总被引:1,自引:0,他引:1
Two experiments assessed newborns' ability to discriminate chromatic from achromatic stimuli. In Experiment 1, newborns differentiated gray from green, from yellow, and from red: For each of these hues they preferred chromatic-and-gray checkerboards over gray squares matched in mean luminance, even though the luminance of the gray checks was varied systematically over a wide range so as to minimize nonchromatic cues. However, newborns showed no evidence of differentiating gray from blue: At some luminances they showed no preference for a blue-and-gray checkerboard over a gray square. In Experiment 2, newborns differentiated red from gray but appeared not to differentiate blue from gray: Following habituation to a series of gray squares of varying luminance, they looked longer at a red square than at a gray square of novel luminance but showed no such pattern of recovery to a blue square. The results imply that newborns have some, albeit limited, ability to discriminate chromatic from achromatic stimuli and hence, that they are at least dichromats. 相似文献
45.
We studied visual detection in 150 infants, 1- to 7-days old, by presenting single lines varying in width and location. We found that newborns detected a line only 8′ wide in the central visual field. Peripherally, they appeared to detect lines of 33′, 33′, and 1°6′ at 10°, 20°, and 30°, respectively. Thus, both the central retina and the peripheral retina appear to function at birth. 相似文献
46.
We investigated developmental changes in sensitivity to biological motion by asking 6-year-olds, 9-year-olds, and adults (twenty-four in each group) to discriminate point-light biological motion displays depicting one of a variety of human movements from scrambled versions of the same displays. When tested without noise dots, participants at all ages performed near ceiling levels and no differences in accuracy were found among the three age groups. Age differences emerged in the second task, in which we used a staircase procedure to determine threshold values of the number of noise dots that could be tolerated in producing a percentage correct value corresponding to a d' value of 1.4. Sensitivity to biological motion improved linearly with age (p < 0.01), with 6-year-olds performing significantly more poorly than adults. This immature performance contrasts with adult-like accuracy by 4 years of age for sensitivity to global motion (Parrish et al, 2005 Vision Research 45 827-837). The comparison implies an immaturity at 6 years of age in the neural networks involved specifically in the processing of biological motion, networks that may include the superior temporal sulcus (STS). 相似文献
47.
48.
Todd J. Maurer Karen J. Maher Donna K. Ashe Debora R. D. Mitchell Michael B. Hein Judith Van Hein 《Journal of applied social psychology》1993,23(12):959-979
In the 1988 American presidential election, leadership perceptions and perceived platforms were used to predict votes for one of the two final candidates (Governor Michael Dukakis and Vice President George Bush). Both leadership perceptions and perceived platforms were found to be related to voting. However, political involvement moderated the relationship between the perceived platforms and the votes, while leadership perceptions were found to be a consistent predictor of voting across levels of political involvement. Leadership perceptions, perceived platforms, and the interaction between involvement and perceived platforms predicted voting above and beyond the voters’ political affiliations. Consistent with a categorization model of leadership perceptions, the prototypicality of perceived leader traits was found to be strongly related to a tendency to vote for a candidate who was perceived to possess those traits. In comparing general favorability of characteristics versus prototypicality with respect to an effective political leadership category, general favorability played a larger role in uninvolved voters’ decisions than in involved voters’ decisions. Differences in mean leadership prototype ratings were also explored as a function of political affiliation and political involvement. The implications of these findings for campaign strategies and for leadership in organizational contexts are discussed. 相似文献
49.
Optokinetic nystagmus in normal and visually deprived children: implications for cortical development 总被引:2,自引:0,他引:2
Ten years ago we proposed that the limitations on young infants' vision might be caused by an immature Y-pathway through the cortex, while their abilities might be mediated by an X-pathway to the cortex and by Y- and/or W-pathways to the superior colliculus and pretectum (Maurer & Lewis, 1979). Although that explanation was too simple overall, it fits well with what is known about asymmetrical optokinetic nystagmus, viz. the difficulty in eliciting OKN to patterns moving from the nasal field toward the temporal field. In this paper, we describe the development of symmetrical OKN, its alteration by early deprivation from cataract, and its physiological basis. We then suggest that, for primates, an explanation based on projections through the magnocellular versus parvocellular layers of the lateral geniculate nucleus may be more appropriate than one based on X-, Y-, and W-cells. 相似文献
50.
Adults use gaze and voice signals as cues to the mental and emotional states of others. We examined the influence of voice cues on children’s judgments of gaze. In Experiment 1, 6-year-olds, 8-year-olds, and adults viewed photographs of faces fixating the center of the camera lens and a series of positions to the left and right and judged whether gaze was direct or averted. On each trial, participants heard the participant-directed voice cue (e.g., “I see you”), an object-directed voice cue (e.g., “I see that”), or no voice. In 6-year-olds, the range of directions of gaze leading to the perception of eye contact (the cone of gaze) was narrower for trials with object-directed voice cues than for trials with participant-directed voice cues or no voice. This effect was absent in 8-year-olds and adults, both of whom had a narrower cone of gaze than 6-year-olds. In Experiment 2, we investigated whether voice cues would influence adults’ judgments of gaze when the task was made more difficult by limiting the duration of exposure to the face. Adults’ cone of gaze was wider than in Experiment 1, and the effect of voice cues was similar to that observed in 6-year-olds in Experiment 1. Together, the results indicate that object-directed voice cues can decrease the width of the cone of gaze, allowing more adult-like judgments of gaze in young children, and that voice cues may be especially effective when the cone of gaze is wider because of immaturity (Experiment 1) or limited exposure (Experiment 2). 相似文献