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601.
This study examined the relationship between reading women's beauty and fashion magazines and the use of pathogenic dieting methods (laxatives, appetite suppressants/diet pills, skipping two meals a day, intentional vomiting, and restricting calories to 1,200 or less each day) among 502 high school females. Weak to moderate positive associations were found between reading frequency and each of these unhealthful practices except the use of laxatives. When controlling for anxiety about weight and frequency of regular exercise, however, the original bivariate relations between reading frequency and skipping two meals a day, and reading and intentional vomiting, disappeared. Replication and weak specification effects were found when examining the relationships between reading and taking appetite suppressant/weight control pills, and reading and restricting calories, under the control conditions. These findings suggest that two of the most common adolescent dieting methods--restricting calories and taking diet pills--appear to be influenced by the reading of women's beauty and fashion magazines.  相似文献   
602.
Phonological sensitivity is an important causal variable in reading acquisition; however, there is controversy concerning its nature. One view holds that sensitivity to various linguistic units reflects independent abilities, whereas another holds sensitivity to these units reflects one ability. We examined relations among sensitivity to words, syllables, rhymes, and phonemes in 149 older preschool children (4- and 5-year-olds) and 109 younger preschool children (2- and 3-year-olds) who completed eight measures of phonological sensitivity and measures of print knowledge. Confirmatory factor analyses of all combinations of word, syllable, rhyme, and phoneme factors found that a one-factor model best explained the data from both groups of children (CFIs >.98). Only variance common to all phonological sensitivity skills was related to print knowledge and rudimentary decoding. Findings support a developmental conceptualization of phonological sensitivity.  相似文献   
603.
We examined the incidence, characteristics, and predictors of separations of children from mothers in 543 poor families receiving public assistance, 251 of whom had experienced homelessness during the previous 5 years. Forty-four percent of the homeless mothers and 8% of housed mothers were separated from one or more children. A total of 249 children were separated from 110 homeless families and 34 children from 23 housed families. Children were placed with relatives and in foster care but were rarely returned to their mothers. Maternal drug dependence, domestic violence, and institutionalization predicted separations, but homelessness was the most important predictor, equivalent in size to 1.9 other risk factors. We infer that policies regarding child welfare and substance abuse treatment should be changed to reduce unnecessary placements. Studies of homeless children who remain with families may be biased if separated children are excluded.  相似文献   
604.
This study uses the masked priming procedure to compare the decompositionality of regular with irregular English past tense forms relative to both an unrelated baseline and a baseline matched on orthographic similarity to the morphological prime. Morphological facilitation varies with the degree of similarity between related primes and targets. Discrepancies between unrelated and orthographic baselines arise when prime and target match in length and form overlap is high. The outcome demonstrates the key role of baselines in assessments of morphological facilitation and highlights problems of interpretation when evidence of morphological decomposition depends on meeting a statistical criterion for significant morphological facilitation.  相似文献   
605.
606.
Oliver  Mary Beth  Green  Stephen 《Sex roles》2001,45(1-2):67-88
This study examined gender differences in children's responses to animated scenes from an action adventure versus a sad film, and to animated previews of a prototypical male versus female movie. Females were more likely than males to express sadness in response to the sad scene, and gender differences in intensities of sadness increased with age. Children were much more likely to stereotype the male preview as most liked by other boys, whereas the majority of children perceived the female preview as liked by either gender equally. In terms of enjoyment of the male and female previews, gender differences in enjoyment of the male preview were apparent only among children who perceived the film as more appealing to boys, and gender differences in enjoyment of the female preview were apparent only among children who perceived the film as more appealing to girls. Implications for children's programming are discussed.  相似文献   
607.
This work addresses a question raised by Wright et al. (2004 Wright , Richard T. and Scott H. Decker. 1994 . Burglars on the Job: Street life and Residential Breakins . Boston : Northeastern University Press . [Google Scholar]) pertaining to the rationality and deterrability of individuals with low self-control. According to some, all persons are presumed to be equally rational; according others, individuals who possess little self-control, who are impulsive and present-oriented are less likely to be influenced by a perceived risks and costs of punishment; and according to a third group of scholars, those who do possess such self-control/restraint are either not motivated toward offending or are inhibited by moral constraints and are, thus, unresponsive to sanction threats. These rival predictions are examined with the use of self-report survey data on academic dishonesty from a sample of undergraduate college students. Across a tremendous number of models employing a variety of functional forms for the effects of perceived sanction threats, we consistently observed that the effects of perceived sanction threats on college students' self-reported academic dishonesty did not vary by their level of offending propensity (self-control).  相似文献   
608.
People with mental illness experience discrimination, paternalistic treatment, and avoidance. To facilitate assessment of such experiences, the authors developed the Multifaceted Stigma Experiences Scale. It assesses four dimensions of experienced stigma in interpersonal interaction: hostile discrimination, benevolent discrimination, taboo, and denial. The influence of stigma experiences on mental health was modeled in a two-wave panel with persons with mental illness (N = 367, 79% repeated response rate). Results indicate that both subtle and blatant forms of stigma constitute a barrier to recovery and may be interpreted as attempts to increase social distance and reinforce the existing social order.  相似文献   
609.
This study examined the thinking processes students engage in while constructing graphic representations of textbook content. Twenty-eight students who either used graphic representations in a routine manner during social studies instruction or learned to construct graphic representations based on the rhetorical patterns used to organize textbook content produced think-aloud responses while constructing graphic representations. Responses indicated that both groups of students needed to restate text while writing, but knowledge of rhetorical patterns appeared to facilitate students' ability to discriminate between main ideas and details, understand relationships between ideas, and, generally, engage the text more deeply. Implications for instruction are discussed.  相似文献   
610.

Background

This study aimed to characterize, for the first time, 18 month longitudinal changes in both functional activation and functional connectivity during working memory in premanifest Huntington’s disease (pre-HD) and symptomatic HD (symp-HD).

Methods

Functional magnetic resonance imaging (fMRI) was used to investigate longitudinal changes in neuronal activity during working memory performance via an N-BACK task (0-BACK and 1-BACK) in 27 pre-HD, 17 symp-HD, and 23 control participants. Whole-brain analysis of activation and region-of-interest analysis of functional connectivity was applied to longitudinal fMRI data collected at baseline and 18 months follow-up.

Results

Compared with controls, the pre-HD group showed significantly increased activation longitudinally during 1-BACK versus 0-BACK in the lateral and medial prefrontal, anterior cingulate, primary motor, and temporal areas cortically, and caudate and putamen subcortically. Pre-HD far from onset, compared with controls, showed further longitudinal increases in the right and left dorsolateral prefrontal cortex (DLPFC). Longitudinal increased activation in anterior cingulate and medial primary motor areas were associated with disease burden in the pre-HD group. Moreover, in pre-HD increased activation over time in primary motor and putamen regions were associated with average response time during 1-BACK performance. During 1-BACK, functional connectivity between the right DLPFC and posterior parietal, anterior cingulate, and caudate was significantly reduced over 18 months only in the pre-HD group.

Conclusions

Longitudinal reductions in connectivity over 18 months may represent an early signature of cortico-cortical and cortico-striatal functional disconnectivity in pre-HD, whereas the concomitant increased cortical and subcortical activation may reflect a compensatory response to the demands for cognitive resources required during task performance. Our findings demonstrate that functional imaging modalities have the potential to serve as sensitive methods for the assessment of cortical and subcortical responses to future treatment measures.  相似文献   
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