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排序方式: 共有316条查询结果,搜索用时 31 毫秒
111.
《Journal of motor behavior》2013,45(5):367-376
The authors investigated whether the salience of dynamic visual information in a video-aiming task mediates the specificity of practice. Thirty participants practiced video-aiming movements in a full-vision, a weak-vision, or a target-only condition before being transferred to the target-only condition without knowledge of results. The full- and weak-vision conditions resulted in less endpoint bias and variability in acquisition than did the target-only condition. Going from acquisition to transfer resulted in a large increase in endpoint variability for the full-vision group but not for the weak-vision or target-only groups. Kinematic analysis revealed that weak dynamic visual cues do not mask the processing of other sources of afferent information; unlike strong visual cues, weak visual cues help individuals calibrate less salient sources of afferent information, such as proprioception. 相似文献
112.
《Cognitive behaviour therapy》2013,42(3):170-178
Quantitative research suggests that depressed and anxious patients can be differentiated based on their cognitive content. This study used qualitative research methods to separate the specific components of open‐ended depressive and anxious thought content in 79 psychiatric outpatients. Patients with major depressive disorder (MDD; n = 36), generalized anxiety disorder (GAD; n = 10), and other psychiatric disorders (PC; n = 33) were instructed to (a) describe their most bothersome problem; (b) imagine the worst possible negative outcome followed by the best possible positive outcome; and (c) describe associated thoughts and emotions for each scenario. The content of patients' responses were coded to examine (a) the types and severity of problems; (b) the presence or absence of hopelessness, catastrophizing, hopefulness, and unrealistic positive expectations; and (c) the presence or absence of particular emotions associated with imagined worst and best outcomes. More GAD patients than MDD and PC patients indicated anticipated anxious emotions associated with imagined worst outcomes, and fewer MDD patients than GAD and PC patients indicated anticipated happiness associated with imagined best outcomes. No group differences emerged for the other variables considered. These findings suggest that depressed and anxious patients differ in their cognitive expectancies about future life events in terms of their own anticipated emotional reactions. 相似文献
113.
《Cognitive behaviour therapy》2013,42(4):166-178
Contemporary cognitive models suggest that social anxiety disorder arises from a number of cognitive factors, including tendencies to form pessimistic (rather than optimistic) attributions and expectations for socially-related events. These models also assume that the strengths of such attributions and expectations are more closely linked with social anxiety than with general anxiety or depression. To test these assumptions, a battery of self-report measures was completed by participants with a primary diagnosis of generalized social anxiety disorder (n?=?75), panic disorder with agoraphobia (n?=?44), or post-traumatic stress disorder (n?=?59). To examine differences on these cognitive variables, group comparisons were performed controlling for general anxiety, depression and medication status. Social anxiety disorder, compared with panic disorder with agoraphobia and post-traumatic stress disorder, was characterized by lower expectations for positive social events and higher expectations for negative social events. There was no difference among the groups on expectations for non-social positive or negative events. Stable and global attributions for social negative events were more closely associated with social anxiety disorder than with panic disorder with agoraphobia and post-traumatic stress disorder. Correlational analyses also revealed specific relationships among social-cognitive measures and social anxiety, even after controlling for general anxiety and depression. The results are consistent with cognitive models of social anxiety disorder. 相似文献
114.
Increasing exemplar variability during category learning can enhance classification of novel exemplars from studied categories. Four experiments examined whether participants preferred variability when making study choices with the goal of later classifying novel exemplars. In Experiments 1–3, participants were familiarised with exemplars of birds from multiple categories prior to making category-level assessments of learning and subsequent choices about whether to receive more variability or repetitions of exemplars during study. After study, participants classified novel exemplars from studied categories. The majority of participants showed a consistent preference for variability in their study, but choices were not related to category-level assessments of learning. Experiment 4 provided evidence that study preferences were based primarily on theoretical beliefs in that most participants indicated a preference for variability on questionnaires that did not include prior experience with exemplars. Potential directions for theoretical development and applications to education are discussed. 相似文献
115.
Michael K. Scullin Courtney A. Kurinec Khuyen Nguyen 《Journal of Cognitive Psychology》2017,29(8):929-938
Implementation intentions, which include a structured verbal statement and mental imagery, improve prospective memory performance (i.e. remembering to execute delayed intentions). To investigate whether, and how, implementation intention strategies affect encoding processes we had participants complete a thought probe procedure immediately after forming the intention to remember to press Q when seeing fruit words. In Experiment 1, an implementation intention verbal statement (relative to control statement) significantly increased generation of high typicality exemplars (apple, banana, orange). In Experiment 2, an implementation intention imagery procedure (relative to control imagery) produced similar outcomes. In Experiment 3, combining the statement and imagery components of the implementation intention (relative to control statement and imagery) demonstrated even more potent effects (e.g. three-fold increase in fruit exemplars generated). In Experiment 4, we tested whether the control statement versus control imagery procedure differentially affected encoding, but these control procedures showed no significant differences. An interesting, unanticipated finding was that there was significantly less mind wandering in the implementation intention conditions relative to the control conditions. The current experiments provide novel information on the processes operating during intention encoding, and support the classic view that implementation intentions increase the encoding of specific retrieval cues. 相似文献
116.
What makes a category seem natural or intuitive? In this paper, an unsupervised categorization task was employed to examine observer agreement concerning the categorization of nine different stimulus sets. The stimulus sets were designed to capture different intuitions about classification structure. The main empirical index of category intuitiveness was the frequency of the preferred classification, for different stimulus sets. With 169 participants, and a within participants design, with some stimulus sets the most frequent classification was produced over 50 times and with others not more than two or three times. The main empirical finding was that cluster tightness was more important in determining category intuitiveness, than cluster separation. The results were considered in relation to the following models of unsupervised categorization: DIVA, the rational model, the simplicity model, SUSTAIN, an Unsupervised version of the Generalized Context Model (UGCM), and a simple geometric model based on similarity. DIVA, the geometric approach, SUSTAIN, and the UGCM provided good, though not perfect, fits. Overall, the present work highlights several theoretical and practical issues regarding unsupervised categorization and reveals weaknesses in some of the corresponding formal models. 相似文献
117.
Automatic thoughts as a predictor of internalizing and externalizing problems in Chinese adolescents: A test of the cognitive content‐specificity hypothesis with age effects
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Meng Yu Wei Xu Qiuyuan Xie Yawen Zhu Gregory S. Chasson Jianping Wang 《Scandinavian journal of psychology》2017,58(5):351-358
The main aim of the current study was to test the cognitive content‐specificity hypothesis across internalizing and externalizing problems in Chinese adolescents. The participants consisted of 2,158 adolescents aged 11–19 years from three middle schools, and they completed a number of measures assessing a wide range of automatic thoughts and syndromes related to internalizing and externalizing problems. Multivariate regression analyses demonstrated that thoughts about social threats, personal failure and hostility were the strongest predictors of anxiety, depression, and externalizing problems, respectively. Age was a statistically significant, albeit modest, moderator of the relationship between automatic thoughts about social threat and anxiety. The current study provides support for the cognitive content‐specificity hypothesis in internalizing and externalizing problems in a Chinese sample. 相似文献
118.
Reduced autobiographical memory specificity (rAMS) is a characteristic memory bias observed in depression. To corroborate the capture hypothesis in the CaRFAX (capture and rumination, functional avoidance, executive capacity and control) model, we investigated the effects of self-relevant cues and cue valence on rAMS using an adapted Autobiographical Memory Test conducted with a nonclinical population. Hierarchical linear modelling indicated that the main effects of depression and self-relevant cues elicited rAMS. Moreover, the three-way interaction among valence, self-relevance, and depression scores was significant. A simple slope test revealed that dysphoric participants experienced rAMS in response to highly self-relevant positive cues and low self-relevant negative cues. These results partially supported the capture hypothesis in nonclinical dysphoria. It is important to consider cue valence in future studies examining the capture hypothesis. 相似文献
119.
Tracking Multiple Statistics: Simultaneous Learning of Object Names and Categories in English and Mandarin Speakers
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Chi‐hsin Chen Lisa Gershkoff‐Stowe Chih‐Yi Wu Hintat Cheung Chen Yu 《Cognitive Science》2017,41(6):1485-1509
Two experiments were conducted to examine adult learners' ability to extract multiple statistics in simultaneously presented visual and auditory input. Experiment 1 used a cross‐situational learning paradigm to test whether English speakers were able to use co‐occurrences to learn word‐to‐object mappings and concurrently form object categories based on the commonalities across training stimuli. Experiment 2 replicated the first experiment and further examined whether speakers of Mandarin, a language in which final syllables of object names are more predictive of category membership than English, were able to learn words and form object categories when trained with the same type of structures. The results indicate that both groups of learners successfully extracted multiple levels of co‐occurrence and used them to learn words and object categories simultaneously. However, marked individual differences in performance were also found, suggesting possible interference and competition in processing the two concurrent streams of regularities. 相似文献
120.
通过3个实验考察语音反应方式下情绪效价对空间Simon效应的影响。实验1采用空间Simon任务范式考察语音反应方式下空间Simon效应的存在;实验2增加刺激的情绪效价维度,采用同样任务考察无关情绪效价对空间Simon效应的影响;实验3在实验2基础上进一步探讨当情绪效价为相关维度时对空间Simon效应的影响。研究结果表明:语音反应方式下,只有当情绪效价为相关维度时,才会对空间Simon效应产生影响,且该影响主要表现在积极效价对认知控制的促进作用而导致空间Simon效应减小或消失,此结果与极性编码一致性假说一致,也拓宽了躯体特异性假说,扩展了以往对情绪影响空间认知的理解。 相似文献