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排序方式: 共有821条查询结果,搜索用时 15 毫秒
721.
Through multiple group structural equation modeling analyses, path models were used to test the predictive effects of sport type and both interpersonal (i.e., mothers’ body dissatisfaction, family dynamics) and intrapersonal factors (i.e., athletic self-efficacy, body mass index [BMI]) on high school female sport participants’ (N = 627) body dissatisfaction. Sport types were classified as esthetic/lean (i.e., gymnastics), non-esthetic/lean (i.e., cross-country), or non-esthetic/non-lean (i.e., softball). Most participants reported low body dissatisfaction, and body dissatisfaction did not differ across sport types. Nevertheless, mothers’ body dissatisfaction was positively associated with daughters’ body dissatisfaction for non-esthetic/lean and non-esthetic/non-lean sport participants, and high family cohesion was predictive of body dissatisfaction among non-esthetic/lean sport participants. Across sport types, higher BMI was associated with greater body dissatisfaction, whereas greater athletic self-efficacy was associated with lower body dissatisfaction. These findings highlight the complex relationship between interpersonal and intrapersonal factors and body dissatisfaction in adolescent female sport participants.  相似文献   
722.
Fred Hamker 《Visual cognition》2013,21(6):1161-1176
Visual cognition and change detection critically depend on attention and gaze. A central question is the exact involvement of attention in change detection. This paper proposes a detailed computational model to illuminate the nature of visual stability and change detection during eye movements. Consistent with experimental findings the model predicts that change detection at the saccade endpoint is relatively easy. According to our model the planning of an eye movement provides an enhanced sensory processing of an object at the saccade target. This facilitates the memorization of that object. A comparison of the memorized target template with the representation after saccade allows for change detection. We hypothesize that the spatial reentry signal that emerges from planning an eye movement could be a crucial neural basis of visual stability.  相似文献   
723.
The problem of effectively managing patients with functional somatic symptoms remains huge in both primary and hospital care, although the potential benefits of mental health interventions such as counselling or psychotherapy are still not widely accepted. Unfortunately, the cost-effective evaluation of counselling has been beset by methodological problems, which stem from attempting to make comparisons between counsellors with different types of training, therapeutic approach and case mix. Since these real-world variations in counselling practice are likely to remain, it is proposed that a different approach to the evaluation of cost-effectiveness should be adopted in the hope of accelerating acceptance of the value of psychological interventions for the army of patients who are currently labelled as ‘difficult’ or ‘heartsink’ and who do not receive the treatment they deserve from the health-care services. It is proposed that, since the common aim of almost all mental health interventions is to engender or enhance a sense of ‘personal responsibility’ in patients/clients, this core objective should form an agreed ‘yardstick’ against which to evaluate the impact of various mental health interventions. Furthermore, since personal responsibility and future health-care utilization (and associated costs) can be assumed to be directly causally related, it is proposed that offset costs should form the basis for future cost-effectiveness evaluations.  相似文献   
724.
The role of personality traits in the decision to start a business and to maintain it successfully is discussed controversially in entrepreneurship research. Our meta-analysis builds upon and extends earlier meta-analyses by doing a full analysis of personality traits that includes a comparison of different traits from a theoretical perspective and by analysing a full set of personality predictors for both start-up activities as well as success. Theoretically, our article adds to the literature by matching traits to the tasks of entrepreneurs. The results indicate that traits matched to the task of running a business produced higher effect sizes with business creation than traits that were not matched to the task of running an enterprise, corrected r = .247, K = 47, N = 13,280, and corrected r = .124, K = 20, N = 3975, respectively. Moreover, traits matched to the task produced higher correlations with success, corrected r = .250, K = 42, N = 5607, than traits not matched to the task of running a business, corrected r = .028, K = 13, N = 2777. The traits matched to entrepreneurship significantly correlated with entrepreneurial behaviour (business creation, business success) were need for achievement, generalized self-efficacy, innovativeness, stress tolerance, need for autonomy, and proactive personality. These relationships were of moderate size in general and, moreover, heterogeneity suggested that future research should analyse moderator variables.  相似文献   
725.
Life-span retention of street names was studied in a sample of former students of a Dutch elementary school. Participants were requested to recall the street names of their childhood neighbourhood and indicate their position on a map. In addition, information was gathered concerning (a) the extensiveness of the original learning experience, (b) its elaborateness, and (c) the amount of interference from similar materials occurring between original learning experience and time of recall. Retention intervals varied from 0 to 71 years. Amount of exposure, elaborateness of learning, and retroactive interference all contributed to the memorability of names. In addition, the forgetting curve showed a permastore effect (Bahrick, 1984), suggesting that memory for non-schematic, incidentally learned material is subject to processes of forgetting similar to those that affect intentionally learned material, such as subject-matter acquired in school.  相似文献   
726.
Abstract

Comparative perceptions of salespersons and sales managers with respect to dimensions of the formers' job were examined. It was shown that the two groups have similar perceptions regarding several dimensions, but that these perceptions relate only somewhat to subordinates' job performance and not at all to supervisors' performance.  相似文献   
727.
Abstract

Worksite smoking bans provide an ideal opportunity to examine the effects of enforced smoking restrictions on not only smoking behaviour, but also other health behaviours. This pilot study examines the short term effects of a such a ban on self-reported smoking behaviour, carbon monoxide and plasma cotinine levels and a number of other appetitive behaviours. The total number of cigarettes smoked on a working day and the number smoked just during working hours both declined following the introduction of a ban. Although the carbon monoxide levels of smokers during working hours demonstrated a similar trend to self-reported smoking, smokers' cotinine levels tended to increase, following an initial decrease following the ban. These data are suggestive of a compensatory process and a change in smoking topography, probably outside working hours. Measures of stress and craving also appeared to be affected by the introduction of smoking restrictions.  相似文献   
728.
In a sample of 976 consecutive cases derived from the recent world-wide Field Trial of Autism and other Pervasive Developmental Disorders, we tested the accuracy of the 15 ICD-10 criteria for the diagnosis of Autism, by comparing neural network models (NN) to more conventional multivariate competitors, namely, linear and quadratic discriminant function analyses and logistic regression. NNs were less accurate than competitors, both in terms of cross-validation results as well as in levels of shrinkage from training to test conditions. The clinical research implications of these results are discussed.  相似文献   
729.
730.
Research on aspects of dreaming associated with alexithymia has yielded mixed results. The present study recruited a young adult online sample of 577 participants who completed validated indices of alexithymia, emotion suppression, negative moods, and eight aspects of dreaming, with a focus on evaluating a counterintuitive previous finding that alexithymia and two of its core facets were associated with greater self-reported typical emotional intensity of dreams. Total alexithymia and facet scores showed differential relationships to aspects of dreaming including dream recall frequency, emotionality, meaningfulness, nightmare frequency, nightmare distress, usefulness of dreams in problem-solving and creativity, and learning about oneself through dreams. Planned hierarchical regression controlling for demographics, alcohol use, and dream recall frequency indicated that the difficulties identifying feelings (DIF) facet of alexithymia was a significant positive predictor of dream emotionality, whereas the externally oriented thinking (EOT) facet was a significant negative predictor. Stress, but not emotion suppression, mediated the positive relationship between DIF and dream emotionality. The likely role of dream emotionality in higher ratings of nightmare distress, dream meaningfulness, and learning about oneself through dreams among those with higher DIF scores is noted, along with other findings and the strengths and limitations of the study.  相似文献   
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