首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
2.
Speech output and finger movements were recorded as right-handed males repeated a syllable while making cyclical finger movements in three experimental conditions: (a) maintaining constant amplitude in both response systems; (b) alternating speech amplitude while attempting to maintain constant finger movement amplitude; and (c) alternating finger movement amplitude while attempting to maintain constant speech amplitude. Observations showed that output of the two response systems was coupled (one syllable was uttered with each finger movement) and entrained in amplitude (the amplitude pattern of the response that the subject attempted to keep constant followed that of the concurrently-active amplitude-modulated response).

These interactions were bidirectional and were present with both left-handed and right-handed finger movements. The interactions are more extensive and subtle than mere interference with one response system by the other, and apparently do not depend on anatomical overlap of the responding neural systems.  相似文献   

3.
为探索不同自恋得分的个体对奖赏与惩罚的敏感性及性别在其中的作用,本研究采用钦佩–竞争自恋问卷(NARQ)、BIS/BAS量表在483名在校大学生中进行调查。对数据进行共同方法偏差检验、相关分析以及基于多元回归的调节效应检验,结果发现:(1)钦佩性自恋与行为趋近系统存在显著正相关,与行为抑制系统存在显著负相关;(2)竞争性自恋与行为抑制系统存在显著正相关,而与行为趋近系统的相关不显著;(3)性别在自恋双面性与行为系统之间起调节作用。结果表明,女性自恋双面性得分越高,对奖赏和惩罚均越敏感;在男性被试中未表现出这种模式。  相似文献   

4.
Interactions Between Exogenous Auditory and Visual Spatial Attention   总被引:5,自引:0,他引:5  
Six experiments were carried out to investigate the issue of cross-modality between exogenous auditory and visual spatial attention employing Posner's cueing paradigm in detection, localization, and discrimination tasks. Results indicated cueing in detection tasks with visual or auditory cues and visual targets but not with auditory targets (Experiment 1). In the localization tasks, cueing was found with both visual and auditory targets. Inhibition of return was apparent only in the within-modality conditions (Experiment 2). This suggests that it is important whether the attention system is activated directly (within a modality) or indirectly (between modalities). Increasing the cue validity from 50% to 80% influenced performance only in the localization task (Experiment 4). These findings are interpreted as being indicative for modality-specific but interacting attention mechanisms. The results of Experiments 5 and 6 (up/down discrimination tasks) also show cross-modal cueing but not with visual cues and auditory targets. Furthermore, there was no inhibition of return in any condition. This suggests that some cueing effects might be task dependent.  相似文献   

5.
ABSTRACT

Neuroprosthetic limbs, regardless of their sophisticated motor control, require sensory feedback to viably interact with the environment. Toward that aim, the authors examined interrelationships between tactile and proprioceptive sensations. Through human psychophysics experiments, they evaluated error patterns of subjects estimating hand location in a horizontal 2-dimensional workspace under 3 tactile conditions. While tactile cues did not significantly affect the structure of the pattern of errors, touching the workspace reduced estimation errors. During neurophysiological experiments, a macaque grasped textured objects using 2 hand postures. Sensory coding showed dependence on both roughness of the manipulandum and posture. In summary, the authors suggest that tactile sensations underlying haptics are processed in a stable spatial reference frame provided by a proprioceptive system, and that tactile and proprioceptive inputs can be encoded simultaneously by individual cells. Such insights will be useful for providing stable, adaptive sensory feedback for neuroprosthetics.  相似文献   

6.
Individuals of Arab descent have increasingly experienced prejudice and employment discrimination. This study used the social identity paradigm to investigate whether greater Arab identification of applicants led to hiring discrimination and whether job characteristics and raters' prejudice moderated this effect. One hundred forty-one American and 153 Dutch participants rated résumés on job suitability. Résumés with Arab name and affiliations negatively influenced job suitability ratings, but only when job cognitive demands and external client contact were limited. Within the Dutch sample job suitability rating of Arab applicants was lowest when Dutch raters' implicit prejudice was high. As expected, no effects of explicit prejudice were found: discrimination may operate in subtle ways, depending on the combined effect of applicant, job, and rater characteristics. Further research and implications for employment-related decision making, such as anonymous résumé-sifting, are discussed.  相似文献   

7.
The effects of Asian and Caucasian facial morphology were examined by having Canadian children categorize pictures of facial expressions of basic emotions. The pictures were selected from the Japanese and Caucasian Facial Expressions of Emotion set developed by D. Matsumoto and P. Ekman (1989). Sixty children between the ages of 5 and 10 years were presented with short stories and an array of facial expressions, and were asked to point to the expression that best depicted the specific emotion experienced by the characters. The results indicated that expressions of fear and surprise were better categorized from Asian faces, whereas expressions of disgust were better categorized from Caucasian faces. These differences originated in some specific confusions between expressions.  相似文献   

8.

Mentalization-based treatment (MBT) has been developed to treat people with complex presentations who may have diagnoses of personality disorder. Whilst psychological formulation is deemed central to the approach, MBT has no standardised approach to formulation. This article therefore proposes a diagrammatic formulation (the “MBT passport”), the elements of which can also be used to construct a narrative MBT formulation. Two fictional case studies exemplify the approach. We consider factors around co-production of MBT formulations and the use of the MBT Passport to manage ruptures within therapy. Common challenges are a therapist/client reluctance to share in a group, that formulations are overly focused on the past to the exclusion of the present, and that formulations are delivered to (rather than ‘owned by’) the client. Processes to mitigate or remedy these situations are suggested.

  相似文献   

9.
This study used multilevel structural equation modeling (MSEM; Preacher, Zyphur, &; Zhang, 2010) to examine within-person processes that give rise to quarrelsome behavior in interactions between romantic partners. Based on Interpersonal Theory and Adult Attachment Theory, we hypothesized that a person's quarrelsome behavior would be predicted by (a) the direct effect of the partner's quarrelsome behavior, (b) an indirect effect mediated by the person's perceptions of the partner's quarrelsome behavior, and (c) an indirect effect mediated by the person's felt security. Using an event-contingent recording methodology, both partners in 93 cohabiting community couples reported independently on their quarrelsome behavior, felt security, and perceptions of the partner's quarrelsome behavior in interactions with each other during a 20-day period. Findings (see Figure 1) supported a direct effect of partner's increases in quarrelsome behavior on person's increases in quarrelsome behavior. This association was partly accounted for by perceptions of partner's behavior and felt security following these perceptions. The more a person perceived the partner as engaging in quarrelsome behavior, the more the person engaged in quarrelsome behavior [indirect effect = .016, 95% CI (.009 ? .022)]. Furthermore, the person's perception of greater quarrelsomeness in the partner's behavior was associated with decreases in the person's felt security, which in turn were related to increases in a person's quarrelsome behavior [indirect effect = .009, 95% CI (.005 ? .013)]. No gender differences were found. Findings indicate that a partner's increase in quarrelsome behavior is partly related to a person's increase in quarrelsome behavior in part to the extent that the person perceives the behavior as quarrelsome and consequently feels insecure during the interaction. Findings illustrate an application of MSEM for assessing multilevel mediation in the dyadic context. Moreover, the results suggest that theory and therapeutic interventions should consider interpersonal perceptions as the first link in the chain of affective and behavioral reactions to the interpersonal behaviors of others.  相似文献   

10.
11.
The authors examined the moderating effect of goal instability on the benefits of components of perceived social support on entering freshmen's academic and personal adjustment. A significant interaction was identified between goal instability and two components of social support: appraised and belonging. Low goal-directed individuals reporting low appraised social support reported lower levels of personal adjustment than did high goal-directed individuals with the same level of appraised social support. In addition, high goal-directed individuals reporting a high sense of belonging reported greater personal adjustment than did high goal-directed individuals with low reported sense of belonging. Implications for the role of goal directedness and social support on improving college adjustment are discussed.  相似文献   

12.
13.
14.
Preferred forms of social interaction were identified using a paired-stimulus format in which two 3–5 s videos of the experimenter providing the social interaction to the participant were presented. Reinforcer efficacy of the high-, medium-, and low-preferred interactions was evaluated using a progressive-ratio schedule to determine the amount of work maintained by the stimuli. Results showed that higher preference stimuli produced larger break points than did lower preference stimuli.  相似文献   

15.
Models of face recognition and classification often adopt a framework in which faces are represented as points in a multi-dimensional space. This psychological face space organizes the faces according to similarity and makes predictions for representational theories of faces. A variety of image-processing techniques have been used to create novel stimuli in this space that represent the average of a population or make a face appear more distinctive. The current research examined the relation between the stimuli created by these image-processing techniques and the underlying psychological representation as measured by multidimensional scaling (MDS) procedures. Morphing procedures were used to create 16 faces that were embedded in a set of 84 other faces. Similarity ratings between all possible pairs of faces were collected, and the data were analyzed using MDS procedures. Dimensions that emerged from the MDS solution included age, race, adiposity, and facial hair. In the MDS space, the morphs appeared more typical than the parents, as predicted by the geometric model. A number of biases were examined, including the tendency of the morphs to be less typical than predicted, which may be attributed to the effects of density near the center of face space. In addition, age and facial-adiposity biases were found. The results support the use of the face-space framework for models of face recognition, although image-processing techniques that are designed to create novel stimuli in this space may introduce systematic biases.  相似文献   

16.
17.
18.
The present study investigated interactions between working memory load and perceptual load. The load theory (Lavie, Hirst, de Fockert, &; Viding, 2004 Lavie, N., Hirst, A., de Fockert, J.W., &; Viding, E. (2004). Load theory of selective attention and cognitive control. Journal of Experimental Psychology: General, 133, 339354.[Crossref], [PubMed], [Web of Science ®] [Google Scholar]) claims that perceptual load decreases distractor interference, whereas working memory load increases interference. However, recent studies showed that effects of working memory might depend on the relationship between modalities of working memory and task stimuli. Here, we examined whether the relationship between working memory load and perceptual load would remain the same across modalities. The results of Experiment 1 showed that verbal working memory load did not affect a compatibility effect for low perceptual load, whereas it increased the compatibility effect for high perceptual load. In Experiment 2, the compatibility effect remained the same regardless of visual working memory load. These results suggest that the effects of working memory load and perceptual load depend on the relationship between the modalities of working memory and stimuli.  相似文献   

19.
Three experiments investigated the relation between recognition of specific cases and categorization in a double-task paradigm that requires both types of information (Estes, 1986b). Results indicated that recognition and categorization were often affected differently by experimental variables. However, mental models used in categorization sometimes hindered development of experiential (case-based) knowledge, leading to lower levels of case recognition and suboptimal categorization performance. When mental models were complex or difficult to discover (non-salient), subjects often used experiential knowledge to classify into categories, resulting in dependence between categorization and recognition. A model of interactions between the two tasks is proposed that postulates two separate but interacting types of knowledge.  相似文献   

20.
We found a direct relationship between variation in informants' grammaticality intuitions about pronoun coreference and variation in the same informants' use of a clause segmentation strategy during sentence perception. It has been proproposed that ‘c-command’, a structural principle defined in terms of constituent dominance relations, constrains within-sentence coreference between pronouns and noun antecedents. The relative height of the pronoun and the noun in the phrase structure hierarchy determines whether the c-command constraint blocks coreference: Coreference is allowed only when the complement structure containing the noun is attached higher than the pronoun. We collected informants' judgments on pronoun-noun coreference in which the noun antecedent was contained in a complement structure dominated by either the Sentence-node (S-node) (higher than the pronoun) or the Verb-phrase-node (VP-node) (not higher than the pronoun). We also assessed each informant's perceptual clause-closure tendency using an auditory word-monitor paradigm. Informants who strongly segmented clauses in the perceptual task did not differentiate between an S- and VP-attachment of sentence complements, as revealed in their coreference judgments, but rather appeared to attach all sentence complements to the S-node. Informants with relatively weak perceptual segmentation differentiated their coreference judgments according to the node attachment of the complement structure. These results indicate that the linguistic universal controlling within-sentence coreference applies to the perceptually available structure for a sequence, not to its pure linguistic structure. Hence, linguistic intuitions result from the interaction of three independent faculties: language-specific knowledge, perceptual processes, and linguistic universals.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号