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161.
In contrast to typical approaches that view religion as problematic or benign, thicker conceptions of religion's place in promoting and sustaining democratic politics are possible. This includes religious organizations modeling democratic practices and engaging in debate on common terms. We initiate this program of inquiry with data from a survey of Presbyterian Church, USA clergy gathered during the late summer and fall of 2009. We asked explicitly about clergy commitment to democratic norms and practices as reflected in their public speech and small group activities in their congregations. We use this article to explain variance in the results, looking especially to see if democratic commitments fall at the expense of religious competition, organizational maintenance, and personal preference and increased conservatism.  相似文献   
162.
Abstract

The present study examined the self-concept of subjects from either a high or low socially valued group who were immersed in a contextually dissonant school setting. Subjects were 315 seventh- and eighth-grade black and white boys and girls. Of this group, 54 were bused to a school where their group was in the minority (dissonant context). The remaining subjects stayed in the school where their group was in the majority (consonant context). The results supported the contextual dissonance theory for the subjects from the lower socially valued group but not for those from the higher socially valued group. A significant interaction for the former group of subjects involving Dissonant Versus Consonant Context × Male Versus Female × Fall Versus Spring Semester showed that the number of negative attributes ascribed to the self was higher for the subjects bused into a dissonant context than for those remaining in a consonant context; this difference was, however, significant for the fall testing only. Also, change in self-concept from fall to spring semester differed depending on whether the subjects were male or female as well as on whether or not they were bused into a dissonant context.  相似文献   
163.
Patients with primary progressive aphasia (PPA) vary considerably in terms of which brain regions are impacted, as well as in the extent to which syntactic processing is impaired. Here we review the literature on the neural basis of syntactic deficits in PPA. Structural and functional imaging studies have most consistently associated syntactic deficits with damage to left inferior frontal cortex. Posterior perisylvian regions have been implicated in some studies. Damage to the superior longitudinal fasciculus, including its arcuate component, has been linked with syntactic deficits, even after gray matter atrophy is taken into account. These findings suggest that syntactic processing depends on left frontal and posterior perisylvian regions, as well as intact connectivity between them. In contrast, anterior temporal regions, and the ventral tracts that link frontal and temporal language regions, appear to be less important for syntax, since they are damaged in many PPA patients with spared syntactic processing.  相似文献   
164.
Before performing neurosurgery, an exhaustive presurgical assessment is required, usually including an investigation of language cerebral lateralization. Among the available procedures, the intracarotid amobarbital test (IAT) was formerly the most widely used. However, this procedure has many limitations: it is invasive and potentially traumatic, especially for children. To overcome these limitations, neuroimaging techniques such as functional magnetic resonance imaging (fMRI) have been used. Again, these methods are difficult to use with children, who must remain motionless during data acquisition. Functional near-infrared spectroscopy (fNIRS) is a noninvasive functional imaging technique that is easily applied to pediatric and cognitively limited patients. It has been used recently in epileptic children for presurgical assessment of expressive and receptive language brain lateralization. The aim of this review is to present the contribution of fNIRS to the presurgical assessment of language function in children with neurological diseases.  相似文献   
165.
The neurophysiological mechanisms underlying superior cognitive performance are a research area of high interest. The majority of studies on the brain-performance relationship assessed the effects of capability-related group factors (e.g. talent, gender) on task-related brain activations while only few studies examined the effect of the inherent experimental task performance factor. In this functional MRI study, we combined both approaches and simultaneously assessed the effects of three relatively independent factors on the neurofunctional correlates of mental rotation in same-aged adolescents: math talent (gifted/controls: 17/17), gender (male/female: 16/18) and experimental task performance (median split on accuracy; high/low: 17/17). Better experimental task performance of mathematically gifted vs. control subjects and male vs. female subjects validated the selected paradigm. Activation of the inferior parietal lobule (IPL) was identified as a common effect of mathematical giftedness, gender and experimental task performance. However, multiple linear regression analyses (stepwise) indicated experimental task performance as the only predictor of parietal activations. In conclusion, increased activation of the IPL represents a positive neural correlate of mental rotation performance, irrespective of but consistent with the obtained neurocognitive and behavioral effects of math talent and gender. As experimental performance may strongly affect task-related activations this factor needs to be considered in capability-related group comparison studies on the brain-performance relationship.  相似文献   
166.
Fluctuating sex hormone levels during the menstrual cycle have been shown to affect functional cerebral asymmetries in cognitive domains. These effects seem to result from the neuromodulatory properties of sex hormones and their metabolites on interhemispheric processing. The present study was carried out to investigate whether functional cerebral asymmetries in fine motor coordination as reflected by manual asymmetries are also susceptible to natural sex hormonal variations during the menstrual cycle. Sixteen right-handed women with a regular menstrual cycle performed a finger tapping paradigm consisting of two conditions (simple, sequential) during the low hormone menstrual phase and the high estrogen and progesterone luteal phase. To validate the luteal phase, saliva levels of free progesterone (P) were analysed using chemiluminescence assays. As expected, normally cycling women showed a substantial decrease in manual asymmetries in a more demanding sequential tapping condition involving four fingers compared with simple (repetitive) finger tapping. This reduction in the degree of dominant (right) hand manual asymmetries was evident during the luteal phase. During the menstrual phase, however, manual asymmetries were even reversed in direction, indicating a slight advantage in favour of the non-dominant (left) hand. These findings suggest that functional cerebral asymmetries in fine motor coordination are affected by sex hormonal changes during the menstrual cycle, probably via hormonal modulations of interhemispheric interaction.  相似文献   
167.
The structural approach on social representations is known for the development of central core theory and its similarity with cognition-oriented sociopsychological perspectives, which has been a target of criticism. The approach has difficulty in dealing with the social dimension of knowledge and adopts a static notion of structure. Acknowledging those shortcomings, we present a revised structural conceptual model of social knowledge and social representations based on the consideration of normative and social identity processes, compatible with contributions of authors external to the classical structural approach, such as Wagner (holomorphy) and Lahlou (propagation model). After redefining the concepts of cognem and structure, we tackle thinking processes and the differences between personal and social representations, conceiving the latter as conventional codes linked to groups. Limitations of the perspective are discussed and research directions are indicated based on an understanding of structure that is broader than the one adopted by the classical approach.  相似文献   
168.
Abstract

HIV/AIDS knowledge, age at onset of sexual activity, perceptions of personal risk and peer norms were explored as correlates for risky sexual behaviors among college students. Ninety-nine male and 185 female college students completed a 66-item questionnaire. A majority reported being sexually active with most in mutually monogamous relationships or not currently in a sexual relationship. Multiple regression correlation analyses showed knowledge about HIV/AIDS to be very high but that this knowledge did not independently relate to the extent of risky behaviors. Perceptions of risk were positively related to number of partners and single-time partners but not condom usage. In contrast to previous studies, perceived peer norms did not independently relate to behaviors. Instead, age at first intercourse was found to have substantial overlap with current perceptions, attitudes, and likelihood for engaging in risky behaviors. The necessity for including previous behaviors in analyses of the impact of attitudes and perceived norms on behavioral intentions is discussed.  相似文献   
169.
Abstract

This study examined the importance of the nature of the relationship between sexual partners in predicting types of sexual practices for 293 gay and bisexual men. Demographics, personal beliefs, substance use, and variables from the health belief model, theory of self-efficacy, and theory of reasoned action were used to predict sexual behaviors. Sexual practices varied by type of partner relationship and duration, with a higher probability of risky behaviors occurring with primary partners than with non-primary partners; relationship status also moderated the effects of safer sex partner norms and denial on sexual risk-taking. In addition, men who were younger, had less education, and used alcohol or drugs prior to sex engaged in higher risk behaviors. This study indicates that a more comprehensive assessment of dimensions of partner relationship will lead to greater understanding of sexual risk-taking.  相似文献   
170.
Functional foods and foods derived from genetically modified organisms represent two forms of intervention in the design of foodstuffs that have given rise to distinct political and regulatory dynamics. In Europe, regulatory agencies have tried, unsuccessfully, to affix a definitive legal meaning to these categories of food artificiality. This incomplete process of legal disambiguation has gone hand in hand with the delegation of the responsibility for overseeing new products to consumers, who are asked to continuously consider and assess the qualities of foods when making their choices in the marketplace. In the case of genetically modified foods, we have witnessed strategies of avoidance premised on the consideration of genetic modification as a blemish on the conventional character of foodstuffs. Functional foods, on the other hand, are increasingly mobilized in practices of naturalistic enhancement. What both examples have in common is the open-ended character of their respective regulatory regimes, and the continuous prodding of consumers to involve themselves more intensely in the weighing of their food choices. The result is a particular mode of market activism that we describe as restless consumption.  相似文献   
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