全文获取类型
收费全文 | 587篇 |
免费 | 24篇 |
专业分类
611篇 |
出版年
2022年 | 4篇 |
2020年 | 16篇 |
2019年 | 22篇 |
2018年 | 23篇 |
2017年 | 13篇 |
2016年 | 26篇 |
2015年 | 18篇 |
2014年 | 14篇 |
2013年 | 78篇 |
2012年 | 26篇 |
2011年 | 35篇 |
2010年 | 21篇 |
2009年 | 13篇 |
2008年 | 27篇 |
2007年 | 20篇 |
2006年 | 24篇 |
2005年 | 22篇 |
2004年 | 18篇 |
2003年 | 17篇 |
2002年 | 21篇 |
2001年 | 4篇 |
2000年 | 5篇 |
1999年 | 11篇 |
1998年 | 8篇 |
1997年 | 13篇 |
1996年 | 11篇 |
1995年 | 7篇 |
1994年 | 7篇 |
1993年 | 10篇 |
1992年 | 4篇 |
1991年 | 3篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1988年 | 8篇 |
1987年 | 5篇 |
1986年 | 3篇 |
1984年 | 5篇 |
1983年 | 5篇 |
1982年 | 2篇 |
1981年 | 6篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1977年 | 4篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1973年 | 3篇 |
1971年 | 2篇 |
1970年 | 2篇 |
1969年 | 2篇 |
排序方式: 共有611条查询结果,搜索用时 0 毫秒
551.
Cognitive strategies such as reappraisal reduce the intensity of negative experience and brain activity that is sensitive
to emotional salience. The time course of reappraisal-related neural modulation remains unclear, and it is unknown whether
the electrocortical response to emotional stimuli is sensitive to reappraisal. Event-related brain potentials were recorded
first while participants passively viewed pleasant, unpleasant, and neutral pictures, and then during an emotion regulation
block in which participants were instructed to attend to or reappraise unpleasant pictures. The late positive potential (LPP)
was enhanced for pleasant and unpleasant pictures in the passive viewing block, and reappraisal resulted in a reliably reduced
LPP—a protracted modulation that began 200 msec after stimulus onset. The degree of LPP modulation was positively related
to reductions in the self-reported emotional intensity that followed emotion regulation instructions. These results indicate
that reappraisal modulates early electrocortical activity that is related to emotional salience, and that the LPP is a useful
tool for studying emotion regulation. 相似文献
552.
This study examined the age-specific pattern of effects of welfare policies on child achievement. Drawing from 7 random-assignment welfare and antipoverty evaluations that provided more than 30,000 observations of children's achievement, this study found that times of developmental transition are the only periods sensitive to the changes in families brought about by these policies. More specifically, small positive effects of welfare and antipoverty policies were found for children making the transition into middle childhood, and small negative effects of these same policies were found for children making the transition out of middle childhood and into early adolescence. Effects were robust across various program groupings and could not be attributed to family characteristics that differ for children of different ages. This research informs the understanding of how changes in employment and income for low-income parents affect development across childhood. 相似文献
553.
This study investigated the effects of familiarization and attention on event-related potential (ERP) correlates of recognition memory in infants. Infants 4.5, 6, or 7.5 months of age were either familiarized with 2 stimuli that were used during later testing or presented 2 stimuli that were not used later. Then, infants were presented with a recording of Sesame Street to elicit attention or inattention and presented with familiar and novel stimuli. A negative ERP component over the frontal and central electrodes (Nc) was larger in the preexposure familiarization group for novel- than for familiar-stimulus presentations, whereas the Nc did not differ for the group not receiving a familiarization exposure. Spatial independent components analysis of the electroencephelogram and "equivalent current dipole" analysis were used to examine putative cortical sources of the ERP components. The cortical source of Nc was located in areas of prefrontal cortex and anterior cingulate cortex. 相似文献
554.
Subitization, the rapid enumeration of small numbers of objects, is often held to reflect a general ability to process three or four items simultaneously. However, questions as to which types of visual representations count as items for subitization have, thus far, received relatively little attention. In several new experiments, we instructed participants to enumerate three or four colored regions in a display. In some trials, all of these regions belonged to separate visual objects, whereas in others, two or more belonged to the same object(s). We found far slower enumeration in the latter case than in the former case, a result that cannot be attributed to Stroop interference from the number of attended objects in a display. We conclude that subitization mechanisms cannot operate on small fragments of shape and color alone, even when such fragments are easily individuated from one another. Rather, such mechanisms are compelled to operate on object representations. 相似文献
555.
The purpose of this investigation was to understand, from the perspective of the speaker, how seven adults have been able to successfully manage their stuttering. Individual experiences were obtained across the three temporal stages (past, transitional, and current). Recurring themes were identified across participants in order to develop an essential structure of the phenomena at each stage. The ability to make the transition from unsuccessful to successful management of stuttering was associated with six recurring themes of: (1) support, (2) successful therapy, (3) self therapy and behavioral change, (4) cognitive change, (5) utilization of personal experience, and (6) high levels of motivation/determination. Six recurring themes associated with past experiences, when stuttering was unsuccessfully managed, included: (1) gradual awareness, (2) negative reactions of listeners, (3) negative emotions, (4) restrictive lifestyle, (5) avoidance, and (6) inadequate therapy. The five recurring themes identified for the current situation where stuttering continues to be successfully managed were: (1) continued management, (2) self acceptance and fear reduction, (3) unrestricted interactions, (4) sense of freedom, (5) and optimism. EDUCATIONAL OBJECTIVES: The reader will be able to: (1) describe, from the prospective of a select group of adults who stutter, the recurring themes associated with both unsuccessful and successful management of stuttering, (2) explain the recurring themes associated with how this group of seven adults achieved successful management of their stuttering, and (3) discuss the basic rationale and procedures associated with phenomenological analysis. 相似文献
556.
The reports by Fitts and Peterson [J. Exp. Psychol. 67(2) (1964) 103-113] and Klapp [J. Exp. Psychol. Hum. Percept. Perform. 104(2) (1975) 147-153] concerning the effects of movement amplitude and target diameter on reaction time present conflicting results. Fitts and Peterson reported that reaction time increased when movement amplitude was lengthened. Klapp reported an interaction in which target diameter effect on reaction time was moderated by movement length: for small targets, reaction time decreased with increasing movement length but reaction time remained unchanged (or increased modestly) when target diameter was large. Two experiments were conducted to replicate and examine the inconsistency in the reaction time results. For both experiments movement time results were in agreement with the predictions of Fitts' law. However, the results for reaction time were mixed: support was obtained for Klapp (1975) but not for Fitts and Peterson (1964). Further analysis identified several potential variables that could have influenced reaction time and explained the different effects on reaction time reported by Fitts and Peterson (1964) and Klapp (1975). The potential variables could include: limb posture at the start of a response; number of limb segments required to perform the task; and the effect of pooling reaction time data from targets located right and left of the start point, and from near and far targets. 相似文献
557.
Selective attention and emotional vulnerability: assessing the causal basis of their association through the experimental manipulation of attentional bias 总被引:11,自引:0,他引:11
MacLeod C Rutherford E Campbell L Ebsworthy G Holker L 《Journal of abnormal psychology》2002,111(1):107-123
Although it is well-established that vulnerability to negative emotion is associated with attentional bias toward aversive information, the causal basis of this association remains undetermined. Two studies addressed this issue by experimentally inducing differential attentional responses to emotional stimuli using a modified dot probe task, and then examining the impact of such attentional manipulation on subsequent emotional vulnerability. The results supported the hypothesis that the induction of attentional bias should serve to modify emotional vulnerability, as revealed by participants' emotional reactions to a final standardized stress task. These findings provide a sound empirical basis for the previously speculative proposal that attentional bias can causally mediate emotional vulnerability, and they suggest the possibility that cognitive-experimental procedures designed to modify selective information processing may have potential therapeutic value. 相似文献
558.
Personality and job performance: test of the mediating effects of motivation among sales representatives 总被引:7,自引:0,他引:7
Research shows consistent relations between personality and job performance. In this study the authors develop and test a model of job performance that examines the mediating effects of cognitive-motivational work orientations on the relationships between personality traits and performance in a sales job (N = 164). Covariance structural analyses revealed proximal motivational variables to be influential mechanisms through which distal personality traits affect job performance. Specifically, striving for status and accomplishment mediate the effects of Extraversion and Conscientiousness on ratings of sales performance. Although Agreeableness was related to striving for communion, neither Agreeableness nor communion striving was related to success in this sales job. The importance of the proposed motivational orientations model is discussed. 相似文献
559.
Connectionist models are introduced as promising tools for understanding the nature of psychological disorders and guiding their assessment. Specifically, ways in which connectionist models can guide the following aspects of the assessment process are described: understanding what constructs are relevant to assess, designing approaches to assessing these constructs, and understanding individual differences in data from assessments. Two extended examples are given based on the authors' research on cognitive aspects of depression and Alzheimer's disease. 相似文献
560.
Alexander GR Slay M 《Mental retardation and developmental disabilities research reviews》2002,8(4):215-220
While infant mortality rates have continued to decline in the U.S., low birth weight and preterm rates have dramatically increased. Although the combination of factors that underlies these trends has not been fully described, there is growing concern that an appreciable part of the rise in prematurity rates stems from efforts taken to improve the survival of these high-risk infants. While advancements in medical technology and practice, augmented by improvements in prenatal care use, may have adversely effected prematurity rates and played a role in broadening racial disparities in pregnancy outcomes, they have positively impacted infant survival. Although many risk factors for prematurity have been identified, there are presently few areas for effective prevention. Accordingly, there is little encouragement for a downturn in prematurity rates in the near future. The prospect of continuing growth in the annual number of surviving preterm infants in the U.S. highlights the need for early detection and treatment of developmental problems for these high-risk survivors, and emphasizes the importance of assuring that needed support services are available to these children and their families. 相似文献