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31.
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Lynne Werner Olsho 《Infant behavior & development》1985,8(4):371-384
The results of an earlier study (Olsho, 1984) indicated that 5- to 8-month-old infants were relatively better at discriminating among high-frequency pitches than low. In the present study, sensory and nonsensory explanations for that effect were evaluated by examining infants' performance in a task requiring similar sensory processing but differing in the demands placed on processes such as memory. Infants' ability to resolve frequency was tested using a tonal masking paradigm, the psychophysical tuning curve. Twenty-four infants were tested at probe frequencies ranging from 500 to 4000 Hz; a group of young adults served as a comparison. Masked and unmasked thresholds were estimated using the visually reinforced head turn procedure in conjunction with an adaptive psychophysical method. Although infants' tuning curves fell below those of adults (indicating poorer performance), the widths and slopes of the infants' curves were not different from the adults'. Moreover, the difference between age groups remained constant across probe frequencies. These findings imply that by 5 months of age, the infant's ability to resolve sound frequency is similar to the adult's. 相似文献
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Lawrence I. Goldberger Lynne M. Ausman R.Charles Boelkins 《Learning and motivation》1980,11(2):185-207
The long-term effects of infantile malnutrition on information processing were studied in squirrel monkeys. From 2 through 8 weeks of age, four low-calorie infants were fed reduced amounts of a high protein diet, limiting their mean body weight gain to 23% of that of four well-fed controls, with all of this gain occurring during the first 2 weeks on the low-calorie diet. Thereafter, both groups received the standard diet ad libitum. At 68 weeks of age, incidental learning was tested by introducing shape cues that were redundant to the solution of a previously learned, two-choice, color discrimination. Removal of the color cues showed that the low-calorie monkeys had learned significantly less about the shape cues than had the controls. The basis for this incidental learning failure was then examined with an embedded-figures dicrimination, to measure attentional ability, and a novel stimulus substitution task, to measure curiosity. The groups did not differ in detecting embedded figures, but the low-calorie monkeys were significantly less likely than controls to select or handle novel stimuli that had been substituted for previously learned discriminative cues. It was concluded that undernutrition in infancy may induce a long-term strategy of only learning information which leads to an immediate reward, while suppressing the acquisition of information due to intrinsic curiosity. 相似文献
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Lynne R. Davidson 《Sex roles》1981,7(3):331-347
This study examines how people live with two gender stereotypes: (1) masculine/active and feminine/passive roles; and (2) masculine/emotional inexpressiveness and feminine/emotional expressiveness. Given the contrast between traditional gender stereotypes and the emergent feminist perspective, we expected that both men and women would experience pressures both to conform to and to deviate from the traditional stereotypes, although the pressures would be greater for women. A study of active/passive roles and specific emotions, with a sample of 141 men and women, revealed that both sexes felt such contradictory pressures, and that they actually were greater for women. Moreover, pressures were magnified in cross-sex interaction. Pretense was one way people consciously monitor feelings and manage interactions. A number of paradoxes emerged. The most dramatic is that both men and women experienced each other as demanding stereotypical behavior, yet both claimed self-motivation for change.The author thanks Lucile Duberman for her incisive suggestions, Nancy Leff for her valuable editorial assistance, and Anne Marie Fodera and Laura Mestress for their competent work as research assistants. 相似文献
38.
Ronald J. Prinz deRosset Myers E. Wayne Holden Kenneth J. Tarnowski William A. Roberts 《Journal of abnormal child psychology》1983,11(3):393-399
In previous work, investigators have found a relationship between marital discord and childhood conduct problems (aggression) in clinic samples. Given the wide variability of aggression found among hyperactive children,it would follow from previous work that child aggression may be associated with marital discord in a hyperactive population. This hypothesis was tested in a sample of 23 boys (ages 5 to 8) diagnosed as attention deficit with hyperactivity. Aggressive behaviors were tracked by the children's teachers for 12 school days. Parental and teacher ratings of conduct problems were also obtained. Additionally, the auditory version of the laboratory Continuous Performance Test was administered. Marital adjustment, overt hostility, and conflict tactics, as reported by the mothers, were not significantly correlated with any of the measures of aggression or conduct problems. In other words, marital discord in families with a hyperactive boy did not explain differential rates of aggressive behavior despite definite variability in both the marital and child behavioral measures. Marital discord was marginally related to severity of attentional deficit on the Continuous Performance Test. The results underscore the need for caution in attempting to extend findings from a general population (i.e., undifferentiated clinicreferred children) to a specific diagnostic subgroup (i.e., attention-deficit hyperactive children). 相似文献
39.
Family-centered, community-based, coordinated care for children with special needs is presented as the best practice model for providing services to children and families. Psychologists must learn to play an active role in this frame-work that both integrates psychology with other health and education disciplines and uses the broad spectrum of psychological knowledge about families, development, community organization, and intervention strategies. Key principles of family-centered child psychology affect practice research and training. The psychologist becomes part of a team created to support families as the primary care-givers of their children. Training programs must reorganize the types of experiences both in the classroom and the field to train new psychologists within this model. As mandates for family-centered care affect policies at the state and federal levels, research will remain a critical factor in understanding the effects of these policy shifts on child and family functioning and the delivery of services. 相似文献
40.
T A Roberts 《Psychological bulletin》1991,109(2):297-308
This article reviews evidence for a gender difference in responsiveness to others' evaluations in achievement situations. Studies show that women's self-evaluations are more responsive to the valence of the evaluative feedback they receive than are men's. A number of possible explanations for this effect are then discussed, with the best evidence pointing to men's and women's differing construals of the informational value of others' evaluations in such situations. Research on the behavioral consequences of women's lower status as well as on children's experiences with evaluative feedback provides potential explanations for this effect. A more proximal explanation, however, lies in men's and women's different approaches to evaluative achievement situations. Men may be particularly likely to respond to the competitive nature of evaluative achievement and hence to adopt a self-confident approach that leads them to deny the informational value of others' evaluations. Women may be particularly likely to approach such situations as opportunities to gain information about their abilities. 相似文献