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41.
42.
Television comprehension is a surprisingly demanding task for very young children. Based on a task analysis of television viewing and review of research, we suggest that by 6 months of age, infants can identify objects and people on screen. By 24 months they can comprehend and imitate simple actions contained in single shots and begin to integrate information across shots. Toddlers nevertheless suffer from the video deficit whereby their comprehension is less than from equivalent real life displays. During the preschool years they learn much of the grammar of filmic montage and can comprehend straightforward narrative productions. Essentially adult comprehension appears to be in place by 13 years of age.  相似文献   
43.
The authors conducted a field study to examine the female body image preferences of young women and young men in a rural northern province of Thailand and in central California. The Thai participants did not have stronger body image preferences than did the U.S. participants overall. However, the young women preferred a significantly more slender body image than did the young men, F(1, 80) = 14.98, p < .001, and the Respondent Gender x Nationality interaction was also significant, F(1, 80) = 4.42, p = .039. Thai men, as expected, exhibited preferences for figures that were heavier than those preferred by their U.S. counterparts. Thai women, in contrast, exhibited preferences for figures that were thinner than those preferred by their U.S. counterparts or their male countrymen. These results are explained in terms of traditional Thai and U.S. values and in terms of Western cultural influences in modern Thailand.  相似文献   
44.
This article provides a construct-by-construct review of the effectiveness of sexual asault prevention programs in modifying sexual assault-related attitudes, cognitions, emotions, and behaviors. This article also discusses variables that may moderate program effectiveness, variables that may mediate program effectiveness, methodological issues, programs for special populations, and iatrogenic effects. In general, sexual assault prevention programs have been shown to be effective in producing short-term reductions in rape-supportive attitudes. There is insufficient evidence, however, to conclude that such programs are effective in reducing the incidence of sexual assault.  相似文献   
45.
A recent factor analysis of the Multiple Affect Adjective Check List (MAACL) changed the Anxiety, Depression, and Hostility scales from bipolar to unipolar scales and added two new scales: Positive Affect and Sensation Seeking. Internal reliability of the MAACL-R scales, computed for normal and patient samples, was adequate for state and trait forms except for Sensation Seeking. Test-retest reliability in college students was higher for the trait form with retest intervals of from 2 to 8 weeks than for the state form with retest intervals of from 2 to 5 days. The pattern of correlations among self-, peer, and counselor ratings and the MAACL-R scales for normal and patient samples indicates improved discriminant validity and equally good convergent validity as the old scales. The use of standard scores that are indexed to the number of items checked reduced scale intercorrelations by controlling the acquiescence set.The financial support of the Weldon Springs Endowment Fund, University of Missouri at Kansas City, toward the completion of this research project is gratefully acknowledged.  相似文献   
46.
To determine the effects of both corticosterone (B) and chronic stressors on acute ACTH responses to restraint, young male rats were exposed to streptozotocin-induced diabetes, cold (5-7 degreesC) or intracerebroventricular (icv) neuropeptide Y (NPY) for 5 d and then exposed to restraint within 2 h after lights on. Two groups of rats were studied: intact and adrenalectomized replaced with B pellets that maintained plasma B in the normal mean 24-h range of intact rats. In addition to ACTH and B responses to restraint on d 5, body weight, food intake, fat depots, glucose and other hormones were measured to determine the role of stress-induced elevations in B on energy balance. ACTH responses to restraint were normal in intact rats subjected to diabetes or cold. By contrast, there was no ACTH or B response to restraint in NPY-infused intact rats. All 3 groups of chronically stimulated adrenalectomized rats with clamped B had facilitated ACTH responses to restraint compared to their treatment controls. Overall food intake increased in all groups of stressed rats; however, augmented intake occurred only during the light in intact rats and equally in the light and dark in B-clamped rats. White adipose depot weights were decreased by both diabetes and cold and increased by NPY in intact rats; the decreases with cold and increases with NPY were both blunted and changes in fat stores were not significant in adrenalectomized, B-clamped rats. We conclude that: 1. diabetes- and cold-induced facilitation of restraint-induced afferent input to hypothalamic control of the hypothalamo-pituitary-adrenal (HPA) axis is opposed in intact rats by the elevated feedback signal of B secretion; 2. NPY does not induce facilitation of afferent stress pathways; 3. chronic stimulation of the HPA axis induces acute hyperresponsiveness of hypothalamic neurons to restraint provided that the afferent input of this acute stimulus is not prevented by B feedback; 4. stimulus-induced elevations in B secretion result in day-time feeding; 5. insensitivity of both caloric efficiency and white fat stores to chronic stress in adrenalectomized, B-clamped rats results from loss of normally variable B levels.  相似文献   
47.
R A Hanson 《Adolescence》1990,25(99):629-643
The Adult-Adolescent Parenting Inventory was used to examine the initial parenting attitudes of a sample of pregnant adolescents. In addition, the attitudes about parenting were correlated with the decision of the adolescent to either keep or place the baby for adoption. Pregnant adolescents scored significantly lower on the "expectations for children" construct than all groups of controls. They scored significantly higher than adolescent controls on the "empathy" construct but lower than the adult controls. On the "corporal punishment" construct, they scored significantly lower than nonabused adolescent controls but were similar to abused adolescent controls. On the "role-reversal" construct, they scored significantly higher than abused adolescent controls, lower than adult controls, and about the same as nonabused adolescent controls. Adolescents who placed their babies had significantly lower scores on the role-reversal measure, but the differences between keepers and placers on the expectations, empathy, and corporal punishment dimensions were not significant. The results are discussed in terms of (1) the areas where attitudes about parenting are below appropriate levels, (2) the possibility of competent teenage mothers, and (3) the groundwork necessary for preparing adolescents for parenthood should they elect to keep their babies.  相似文献   
48.
Examined demographic, environmental, and parent-child interactional correlates of physical activity in a group of 222 preschoolers. Activity levels were assessed with a system that quantified directly observed physical activity in the natural environment. Using regression-modeling procedures, results revealed a significant relationship between (a) child's relative weight, parental weight status, and percentage of time spent outdoors (environment) and (b) children's activity levels. Parental obesity was associated with lower levels of physical activity in children, childhood relative weight was associated with slightly higher levels of physical activity, and more outdoor activity was associated with higher activity levels. Parental participation in children's activities also significantly interacted with levels of parental obesity in predicting activity levels. Those children with a 50% risk for obesity (as defined by both, one, or neither parent being overweight) had small changes in activity across levels of parent-child interaction, whereas those at higher risk for obesity responded with increased activity as parent-child interactions increased. Results are discussed, and the implications of these findings for future intervention efforts are examined.  相似文献   
49.
Linguistic coding by deaf children in relation to beginning reading success   总被引:4,自引:0,他引:4  
The coding of printed letters in a task of consonant recall was examined in relation to the level of success of prelingually and profoundly deaf children (median age 8.75 years) in beginning reading. As determined by recall errors, the deaf children who were classified as good readers appeared to use both speech and fingerspelling (manual) codes in short-term retention of printed letters. In contrast, deaf children classified as poor readers did not show influence of either of these linguistically based codes in recall. Thus, the success of deaf children in beginning reading, like that of hearing children, appears to be related to the ability to establish and make use of linguistically recoded representations of the language. Neither group showed evidence of dependence on visual cues for recall.  相似文献   
50.
Comparison of metabolic rates, language, and memory in subcortical aphasias   总被引:3,自引:0,他引:3  
Four patients with subcortical lesions and either aphasia or amnesia were compared to four patients with cortical lesions and aphasia. Each patient had [18F] fluorodeoxyglucose positron-emission computed tomography, language, and memory evaluations. Marked metabolic depression was found in the thalamus and caudate in all patients. The subcortical patients had only mild left-cortical changes, while the cortical patients showed marked cortical metabolic changes in the left hemisphere. Language changes were mild in the subcortical patients, while moderate to severe in the cortical patients. All patients showed severe verbal memory dysfunction. The only common abnormalities in the two groups were metabolic changes in the thalamus and severity of verbal memory dysfunction. These findings suggest a relationship between verbal memory and thalamic function.  相似文献   
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