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排序方式: 共有782条查询结果,搜索用时 15 毫秒
21.
This review identified 1275 studies examining cognitive deficits in people with schizophrenia, published between 1990 and
2003. Data from 113 studies (4365 patients and 3429 controls) were combined in a meta-analysis carried out on the five cognitive
domains of IQ, memory, language, executive function, and attention. Studies were excluded where they lacked a suitable control
group or failed to present complete information. In all five cognitive domains, analysis indicated a consistent trend for
patients to perform more poorly than healthy controls, with significant heterogeneity across studies. Sources of heterogeneity
were analyzed and a need to ensure more appropriate composition of patient and control groups and to adopt a more refined
and methodologically correct, hypothesis-driven approach was identified. 相似文献
22.
This study evaluated the characteristics of suicidal behavior (suicide attempt or suicidal ideation) among 230 consecutively admitted inpatients with schizophrenia and mood disorders in a university hospital in China. The rate of lifetime suicidal behavior was found to be significantly higher in patients with mood disorders (62.4%) than in patients with schizophrenia (38.6%). The rate of suicidal behavior was significantly higher in patients with major depressive disorder (86.8%) than those with bipolar disorders (42.6%). Patients with schizophrenia attempted suicide for the first time earlier in life than the patients with mood disorders. Mood disorder patients, especially those with major depressive disorder, had more and more serious suicide attempts than the patients with schizophrenia. 相似文献
23.
Flores E Tschann JM Marin BV Pantoja P 《Cultural diversity & ethnic minority psychology》2004,10(1):39-52
This study examined the relationship between acculturation and multiple dimensions of marital conflict among Mexican American husbands and wives. Participants were 151 husbands and wives who were recruited from a health maintenance organization in northern California and individually interviewed. More acculturated husbands and wives engaged in less avoidance of conflict and were more expressive of their feelings in an argument. Husbands who were more acculturated reported more conflict concerning sex and consideration for the other. Bicultural and more acculturated husbands reported that their wives were more verbally and physically aggressive, compared with mono-Mexican husbands. The findings provide evidence that more acculturated husbands and wives are involved in more direct expressions of conflict in their marriages, compared with less acculturated husbands and wives. 相似文献
24.
Yago E Duarte A Wong T Barceló F Knight RT 《Cognitive, affective & behavioral neuroscience》2004,4(4):609-617
Single-unit, event-related potential (ERP), and neuroimaging studies have implicated the prefrontal cortex (PFC) in top-down
control of attention and working memory. We conducted an experiment in patients with unilateral PFC damage (n=8) to assess the temporal kinetics of PFC-extrastriate interactions during visual attention. Subjects alternated attention
between the left and the right hemifields in successive runs while they detected target stimuli embedded in streams of repetitive
task-irrelevant stimuli (standards). The design enabled us to examine tonic (spatial selection) and phasic (feature selection)
PFC-extrastriate interactions. PFC damage impaired performance in the visual field contralateral to lesions, as manifested
by both larger reaction times and error rates. Assessment of the extrastriate P1 ERP revealed that the PFC exerts a tonic
(spatial selection) excitatory input to the ipsilateral extrastriate cortex as early as 100 msec post stimulus delivery. The
PFC exerts a second phasic (feature selection) excitatory extrastriate modulation from 180 to 300 msec, as evidenced by reductions
in selection negativity after damage. Finally, reductions of the N2 ERP to target stimuli supports the notion that the PFC
exerts a third phasic (target selection) signal necessary for successful template matching during postselection analysis of
target features. The results provide electrophysiological evidence of three distinct tonic and phasic PFC inputs to the extrastriate
cortex in the initial few hundred milliseconds of stimulus processing. Damage to this network appears to underlie the pervasive
deficits in attention observed in patients with prefrontal lesions. 相似文献
25.
Quinones-Vidal E Lozpez-Garcia JJ Penaranda-Ortega M Tortosa-Gil F 《Journal of personality and social psychology》2004,86(3):435-452
A bibliometric analysis of the first 36 years (1965-2000) of the Journal of Personality and Social Psychology (JPSP) is presented. The authors analyzed the structure of JPSP on the basis of contents and other aspects related to productivity, such as growth in the number of articles and authors, and "invisible colleges." In 2001, JPSP articles were cited over 23,000 times. An increasing number of older, classic articles are cited, suggesting that there are an accumulating number of citations whose influence endures over time. JPSP articles have grown in length, number of studies included, number of references, and number of authors and have become more international with an increasing proportion of authors from outside the United States. The pattern of findings suggests an increasingly complex and mature science. 相似文献
26.
Cognitive and motivational processes underlying coping flexibility: a dual-process model 总被引:3,自引:0,他引:3
Cheng C 《Journal of personality and social psychology》2003,84(2):425-438
Discriminative facility was proposed as a cognitive process and need for closure was proposed as a motivational process underlying coping flexibility. The dual-process model posits that need for closure influences discriminative facility, which in turn modifies coping flexibility and psychological adjustment. In Study 1, results of structural equation modeling provided support for the dual-process model. This model was further examined using experimental methods (Study 2) and a prospective design (Study 3). Consistent with the dual-process model, results from all 3 studies showed that participants who were more motivated to seek alternative coping strategies tended to encode stressful situations in a more differentiated way. These individuals used a greater variety of strategies to fit different situational demands and were better adjusted. 相似文献
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29.
Juvenile budgerigars (Melopsittacus undulatus) observed thin film transistor video playback of a virtual conspecific demonstrator using its beak to remove a stopper from a food box, either by pulling the object upward or by pushing it downward. Simultaneously (Experiment 1) or subsequently (Experiment 2), the observers were offered a similar stopper box and rewarded with access to food for each removal response, regardless of its direction. Observers of upward movement made a greater proportion of up responses in total and showed a stronger tendency to increase the proportion of up responses over test trials than observers of downward movement. These findings provide the first demonstration of which the authors are aware that birds are able not only to detect and respond to a moving video image but also to copy its movements. 相似文献
30.
Zea MC Asner-Self KK Birman D Buki LP 《Cultural diversity & ethnic minority psychology》2003,9(2):107-126
Two studies were conducted to develop and examine internal consistencies and validate the Abbreviated Multidimensional Acculturation Scale. Study 1 participants were 156 Latino/Latina college students. Findings indicated good internal reliabilities for all 3 subscales. Adequate concurrent validity was established with length of residence in the United States. The scale also showed adequate convergent and discriminant validity. Study 2 participants were 90 Latino/Latina community members. The subscales were also reliable and showed adequate concurrent validity with length of residence in the United States. Convergent and discriminant validity were also adequate. Construct validity was further demonstrated through factorial analyses of the combined samples (N = 246). Three separate factors emerged: cultural identity, language competence, and cultural competence. 相似文献