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71.
Bernal ME Sirolli AA Weisser SK Ruiz JA Chamberlain VJ Knight GP 《Cultural diversity & ethnic minority psychology》1999,5(1):43-55
Interest in the efficacy of multicultural training for practitioners and scientists working with multicultural populations has led to questions about the characteristics of students who seek this training. Students of ethnic minority background, as compared with White students, may be more likely to seek programs that offer this training, and their ethnic or racial identity may be related to this preference. This study explores the relevance of multicultural training to White and ethnic minority graduate students in accredited clinical psychology programs. Students rated the relevance of multicultural and general training components to their decisions about where to apply to graduate school. The ethnic minority students' mean ratings of the relevance of multicultural components were higher than those of White students, and the degree of ethnic minority students' ethnic identification was positively correlated to these relevance ratings. 相似文献
72.
Prefrontal cortex regulates inhibition and excitation in distributed neural networks. 总被引:9,自引:0,他引:9
Prefrontal cortex provides both inhibitory and excitatory input to distributed neural circuits required to support performance in diverse tasks. Neurological patients with prefrontal damage are impaired in their ability to inhibit task-irrelevant information during behavioral tasks requiring performance over a delay. The observed enhancements of primary auditory and somatosensory cortical responses to task-irrelevant distractors suggest that prefrontal damage disrupts inhibitory modulation of inputs to primary sensory cortex, perhaps through abnormalities in a prefrontal-thalamic sensory gating system. Failure to suppress irrelevant sensory information results in increased neural noise, contributing to the deficits in decision making routinely observed in these patients. In addition to a critical role in inhibitory control of sensory flow to primary cortical regions, and tertiary prefrontal cortex also exerts excitatory input to activity in multiple sub-regions of secondary association cortex. Unilateral prefrontal damage results in multi-modal decreases in neural activity in posterior association cortex in the hemisphere ipsilateral to damage. This excitatory modulation is necessary to sustain neural activity during working memory. Thus, prefrontal cortex is able to sculpt behavior through parallel inhibitory and excitatory regulation of neural activity in distributed neural networks. 相似文献
73.
Knight Kim H. Elfenbein Morton H. Capozzi Lauren Eason Holly A. Bernardo Marcia F. Ferus Kenneth S. 《Sex roles》2000,43(3-4):229-240
A total of 249 primarily middle-class, Caucasian college students (141 females, 108 males) completed the Knowing Styles Inventory (KSI) (Knight, Elfenbein, & Messina, 1995) to measure Connected and Separate Knowing and the Parental Authority Questionnaire (PAQ) (Buri, 1991), used to measure different parenting styles (authoritarian, authoritative, and permissive parenting). Authoritative parenting style of the mother was positively associated with Connected Knowing, while authoritative parenting style of the father was negatively related to Separate Knowing for both the female and male participants of the study. For the female participants only, permissive parenting style of the father was positively related to Separate Knowing. It was also found that first-born college students scored significantly higher on Separate Knowing than later-born students. The results suggest that family experiences may be precursors to the epistemologies of college students. 相似文献
74.
David Knight 《Zygon》2000,35(3):603-612
Romantic sensibility and political necessity led Humphry Davy, Britain's most prominent scientist in the first quarter of the nineteenth century, to pantheism: nature worship, involving for him a fervent belief in the immortality of the soul. Rapt with a vision of sublimity, from mountain tops or balloons, men of science in succeeding generations also found in pantheism a reason for their vocation and a way of making sense of their world. It should be seen as an alternative both to active participation in church life (like Faraday's) and to a gritty agnosticism (like Huxley's), indicating again how subtle and complex relationships were between science and religion in the nineteenth century. 相似文献
75.
76.
77.
Event-related potentials (ER) were recorded in response to mildly aversive somatosensory and auditory stimuli. Patients with orbitofrontal lesions exhited enhanced ERPs (i.e., P3 amplitudes), as compared with control subjects. Moreover, these patients did not habituate to somatoensory stimuli across blocks of trials. The results were specific to orbitofrontal damage, since patients with damage to the dorsolateral prefontal cortex did not exhibit enhanced P3 amplitudes. These findings suggest damage to the orbitofrontal cortex impairs the ability to modulate or inhibit neural responses to aversive stimuli. The findings are couched in terms of dynamic filtering theory, which suggests that the orbitofrontal cortex is involved in the selection and active inhibition of neural circuits associated with emotional responses. 相似文献
78.
This study investigates the effects of negative affect on performance monitoring. EEG was acquired during a lateralized, numeric
Stroop working memory task that featured task-irrelevant aversive and neutral pictures between stimuli. Performance accuracy
showed a right-hemisphere advantage for stimuli that followed aversive pictures. Response-locked event-related potentials
(ERPs) from accurate trials showed an early negative component (CRN; correct response/conflict-related negativity) followed
by a positive wave comparable to the Pe (error positivity). The CRN was bi-peaked with an earlier peak that was sensitive
to aversive pictures during early portions of the experiment and a later peak that increased with error likelihood later in
the experiment. Pe amplitude was increased with aversive pictures early in the experiment and was sensitive to picture type,
Stroop interference, and hemisphere of stimulus delivery during later trials. This suggests that ERP indices of performance
monitoring, the CRN and Pe, are dynamically modulated by both affective and cognitive demands. 相似文献
79.
The most pervasive and least well-addressed problem in cognitive studies of schizophrenia is the propensity of schizophrenia patients to show inferior performance on a variety of cognitive tasks. Consequently, apparent specific cognitive abnormalities may actually reflect the interaction of task discriminating power with generalized deficit. L. J. Chapman and J. P. Chapman (1973a) suggested psychometric approaches for eliminating such artifactual group differences. Unfortunately, their solution neglects important issues of process specification and does not provide a viable strategy for process-oriented investigators. Psychometric remediation of artifactual Group x Task interactions inevitably confounds the processes being measured, resulting in theoretically ambiguous findings. Moreover, evidence that changes in measurement reliability can both increase and decrease group discrimination challenges a basic underlying assumption of the Chapmans' matching solution. This article presents a process-oriented approach to solving this problem in schizophrenia research. 相似文献
80.
Machado L Wyatt N Devine A Knight B 《Journal of experimental psychology. Human perception and performance》2007,33(5):1045-1061
Humans have a remarkable capability to respond efficiently to a stimulus of interest despite other stimuli competing for neural resources. The current study investigated how the human system copes with distracting stimuli. During each trial, participants viewed 2 sequential stimuli that were each associated with a specific action based on an arbitrary mapping. The 1st stimulus served as a distractor, and the 2nd stimulus required a response (target). When the distractor preceded the target by more than a few hundred milliseconds, response latencies were slower when the 2 stimuli were associated with the same response. The authors propose that this negative compatibility effect stemmed from an inhibitory mechanism that the human system utilizes to prevent the distractor from eliciting an unwanted response. 相似文献