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191.
192.
New conceptions of what constitutes meaning for the organism have recently arisen within the behavioral tradition. These conceptions are a function of reformulations of traditional topics such as reinforcement and verbal behavior. This paper will review these reformulations and discuss their implications for education. It is argued that teachers are in need of a more comprehensive framework for understanding human behavior than the technique-based behaviorism to which they are frequently exposed. The present paper suggests that advances in our understanding of choice behavior and verbal behavior put us within reach of a comprehensive framework for making sense of the interconnectedness of social, self, and academic development.  相似文献   
193.
A great deal of violence in civil wars is informed by the logic of terrorism: violence tends to be used by political actors against civilians in order to shape their political behavior. I focus on indiscriminate violence in the context of civil war: this is a type of violence that selects its victims on the basis of their membership in some group and irrespective of their individual actions. Extensive empirical evidence suggests that indiscriminate violence in civil war is informed by the logic of terrorism. I argue that under certain conditions, that tend to be quite common, such violence is counter productive. I specify these conditions and address the following paradox: why do we sometimes observe instances of indiscriminate violence evenunder conditions that make this strategy counterproductive? I review four possible reasons: truncated data, ignorance, cost, and institutional constraints. I argue that indiscriminate violence emerges because it is much cheaper than its main alternative – selective violence. It is more likely under a steep imbalance of power between the competing actors, and where and when resources and information are low; however, most political actors eventually switch to selective violence. Thus, given a balance of power between competing actors, indiscriminate violence is more likely at early rather than late stages of the conflict. Overall, the paper suggests that even extreme forms of violence are used strategically.  相似文献   
194.
童年中期儿童受欺负地位稳定性与社会能力的关系   总被引:1,自引:0,他引:1       下载免费PDF全文
本研究以522名小学二、三、四年级的儿童进行间隔1年(两次收集数据)的纵向研究,考察了儿童受欺负稳定性及其与社会能力的关系。结果表明:受欺负在小学儿童中十分常见,但并不是一种很稳定的现象,对大多数儿童来说,受欺负只是一种短暂的经历。在间隔1年的追踪研究中,只有大约6.6%的儿童被连续两次评定为受欺负者。重复测量方差分析发现,儿童的受欺负与社会能力发展有着密切的同时性关联;鉴别分析表明,同伴拒绝、退缩行为是区分儿童受欺负稳定性的两个最主要的社会能力变量。  相似文献   
195.
Testosterone levels have been shown to decrease in the face of social defeat in several mammalian species. Among humans, the loss of social status has been studied primarily in the context of athletic competition, with winners having higher testosterone levels than losers. This study examined testosterone levels in relation to peer victimization (bullying) in a sample of 151 boys and girls aged 12–13. Statistically controlling for age and pubertal status, results indicated that on average verbally bullied girls produced less testosterone and verbally bullied boys produced more testosterone than their nonbullied counterparts. Similar trends were evident comparing social and physical bullying with testosterone. Sex differences are discussed in terms of empirically validated differences in coping styles, as girls tend to internalize, whereas boys tend to externalize, their abuse. Aggr. Behav. 35:103–113, 2009. © 2008 Wiley‐Liss, Inc.  相似文献   
196.
To investigate maturational plasticity of fluid cognition systems, functional brain imaging was undertaken in healthy 8-19 year old participants while completing visuospatial relational reasoning problems similar to Raven's matrices and current elementary grade math textbooks. Analyses revealed that visuospatial relational reasoning across this developmental age range recruited activations in the superior parietal cortices most prominently, the dorsolateral prefrontal, occipital-temporal, and premotor/supplementary cortices, the basal ganglia, and insula. There were comparable activity volumes in left and right hemispheres for nearly all of these regions. Regression analyses indicated increasing activity predominantly in the superior parietal lobes with developmental age. In contrast, multiple anterior neural systems showed significantly less activity with age, including dorsolateral and ventrolateral prefrontal, paracentral, and insula cortices bilaterally, basal ganglia, and particularly large clusters in the midline anterior cingulate/medial frontal cortex, left middle cingulate/supplementary motor cortex, left insula-putamen, and left caudate. Findings suggest that neuromaturational changes associated with visuospatial relational reasoning shift from a more widespread fronto-cingulate-striatal pattern in childhood to predominant parieto-frontal activation pattern in late adolescence.  相似文献   
197.
This report is an examination of a theoretical model of risk amplification within a sample of 255 homeless and runaway adolescents. The young people were interviewed on the streets and in shelters in urban centers of four Midwestern states. Separate models were examined for males (n = 102) and females (n = 153). Results indicated that street experiences such as affiliation with deviant peers, deviant subsistence strategies, risky sexual behaviors, and drug and/or alcohol use amplified the effects of early family abuse on victimization and depressive symptoms for young women. These street adaptations significantly increased the likelihood of serious victimization over and above the effects of early family history for both young men and women. Similarly, street behaviors and experiences increased the likelihood of depressive symptoms for young women over the effects of early family abuse, but not for young men. The risk-amplification model from the life course theoretical perspective is discussed as an example of the cumulative continuity of maladaptive behaviors.  相似文献   
198.
In 1986 I began research to address the relationship between early child abuse and neglect and later deliquent and violent criminal behavior using a prospective cohort design. The relationship is not inevitable, suggesting an opportunity for long-range violence prevention through appropriate early intervention. Here, I briefly describe how childhood victimization and violent criminal behavior are related and illustrate a number of promising strategies and opportunities to intervene. Finally, I offer five principles to guide interventions: (1) the earlier the intervention, the better; (2) don't neglect neglected children; (3) one size does not fit all; (4) surveillance—a double-edged sword; and (5) accessibility to resources. Rather than focusing on responses to child abuse or neglect in court proceedings that “treat” offenders, primary prevention efforts should target childhood victims to reduce their risk of becoming offenders in the future.  相似文献   
199.
The parafascicular (PF) nucleus, a posterior component of the intralaminar nuclei of the thalamus, is considered to be an essential structure in the feedback circuits of basal ganglia-thalamo-cortical systems that critically participate in cognitive processes. To study the PF contribution to processing of behaviorally significant information during specific episodes of learning, we investigated the effects of damaging the PF nucleus in the acquisition of a natural form of social olfactory learning, the socially transmitted food preference (STFP) task. This task is a non-spatial paradigm that exhibits some of the characteristics of relational memory because it requires that animals use information obtained in one episode to guide later behavior in different circumstances. Adult male Wistar rats were submitted to pretraining bilateral N-methyl-D-aspartate (0.15 M, pH 7.4) lesions of the PF (0.4 microl/side, 0.2 microl/min). The behavioral effects of PF lesions were compared to vehicle- and sham-operated control groups and two retention delays were considered in separate groups: immediately (Lesion-I, Vehicle-I, and Sham-I groups) and 24h after training (Lesion-24, Vehicle-24, and Sham-24 groups). PF lesions produced delay-independent impairments in the STFP suggesting that this nucleus might modulate the acquisition of this odor-odor association task. Results are discussed in the context of medial prefrontal cortex deafferentation induced by PF damage.  相似文献   
200.
Several studies show that a history of exposure to appearance-related teasing is linked to body dissatisfaction. This study extends those findings by examining the impact of bullying, and other forms of peer victimization, on different aspects of 10-year-old girls’ and boys’ body esteem. Participants were 960 Swedish 10-year-olds, 515 girls and 445 boys. Principal results show that social exclusion is related to 10-year-olds’ evaluations of their general appearance, to evaluations of their weight, and to beliefs about how others perceive their appearance. Furthermore, bullied girls have poorer body esteem in terms of beliefs of how others perceive their appearance than do bullied boys. Appearance teasing was associated with girls’ poorer body esteem in terms of general appearance and beliefs of others views of their appearance. For boys, teasing was associated with poorer body esteem on all dimensions. Thus, this study implies that a wider range of peer victimization relates to children's negative self-perceptions than was former known.  相似文献   
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