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111.
Prof. Dr. med. Ulrich Rüger 《Psychotherapeut》2010,55(4):355-357
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Location-based cuing experiments have shown that inhibition of return (IOR) spreads beyond a cued location but appears to
be confined to the cued hemifield by the vertical meridian. Previous studies have also shown that IOR can spread across objects
and here we investigate whether an object can be used to mediate the spreading of IOR into the opposite hemifield. Two experiments
used a rectangular object that surrounded four target locations, two to the left and right of a central fixation point. The
spreading of IOR in the presence of the object was determined and compared with a condition where the object-frame was absent.
Object-present and object-absent trials were either mixed within a block (Experiment 1) or divided into separate blocks (Experiment
2). Both experiments revealed robust inhibition in the cued but not the uncued hemifield, further demonstrating the hemifield-based
spreading of IOR. 相似文献
116.
Task-switching performance was assessed in young and older adults as a function of the number of task sets to be actively maintained in memory (varied from 1 to 4) over the course of extended training (5 days). Each of the four tasks required the execution of a simple computational algorithm, which was instantaneously cued by the color of the two-digit stimulus. Tasks were presented in pure (task set size 1) and mixed blocks (task set sizes 2, 3, 4), and the task sequence was unpredictable. By considering task switching beyond two tasks, we found evidence for a cognitive control system that is not overwhelmed by task set size load manipulations. Extended training eliminated age effects in task-switching performance, even when the participants had to manage the execution of up to four tasks. The results are discussed in terms of current theories of cognitive control, including task set inertia and production system postulates. 相似文献
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In three experiments we measured response time (RT) and peak force (PF) to investigate the grouping of left- and right-hand key press responses in a dual-task paradigm involving two independent go/no-go tasks. Within each task, a go stimulus within one of two modalities (i.e., visual versus auditory) required a response by one hand. In Experiment 1 with simultaneous go stimuli in the two tasks, responses appeared to be grouped in approximately 75-80% of trials, compared with nearly 100% grouping in a single-task condition requiring bimanual responses to the onset of any stimulus in either modality. In Experiment 2 with stimulus onset asynchronies (SOAs) of 0-400 ms between the two go stimuli, response grouping clearly declined as SOA increased, although some grouping was still evident even at the longest SOA. The same pattern was observed in Experiment 3 with the same range of SOAs but unpredictable stimulus order, suggesting that grouping is not strongly dependent on prior knowledge of the likely response order. These results emphasize the pervasiveness of response grouping in bimanual dual-task RT paradigms and provide useful clues as to its nature. 相似文献
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Do the inference strategies people select depend on the magnitude of time pressure? Is this dependency modified by the type of time pressure? These questions are addressed in three experimental studies in which participants made inferences after having searched for information on a computerized information board. In Study 1, time pressure was induced indirectly by imposing opportunity costs of being slow, a form of time pressure that is common in daily life but that has rarely been examined in the literature. A simple lexicographic heuristic (LEX) achieved the best fit in predicting participants' inferences. Studies 2 and 3 induced high time pressure either indirectly by imposing opportunity costs in terms of time or directly by limiting the time for each choice. Regardless of how time pressure was induced, under high time pressure the inferences could be best predicted with LEX, whereas under low time pressure a weighted linear model that integrates all available information predicted the inferences best. We conclude that people select strategies adaptively depending on characteristics of the situation. 相似文献
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Salzer S Pincus AL Hoyer J Kreische R Leichsenring F Leibing E 《Journal of personality assessment》2008,90(3):292-299
In this study, we addressed the heterogeneity in interpersonal problems across patients with generalized anxiety disorder (GAD). We assessed interpersonal problems by the Inventory of Interpersonal Problems (IIP-C; Horowitz, Alden, Wiggins, & Pincus, 2000) in a sample of 78 GAD patients. We used IIP-C profiles describing interpersonal characteristics of the total GAD sample as well as clustered GAD interpersonal subtypes. Although the overall sample was located in the friendly submissive quadrant of the circumplex model, this was true only for the Exploitable cluster, which includes more than 50% of the patients. Importantly, clusters of GAD patients with other locations reporting predominantly Cold, Nonassertive, or Intrusive interpersonal problems were also identified. The 4 clusters did not differ in terms of gender, comorbid disorders, or the severity of depression or anxiety. Thus, the assessment of interpersonal problems provides additional diagnostic information covering the heterogeneity of GAD patients. This information could be used for differential indication and individual case formulation in GAD. 相似文献
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In 2 studies with older adults, the authors investigated the effect of executive attention resources on the retrieval of emotional public events. Participants completed a battery of working memory tasks, as a measure of executive attention, and a battery of tasks assessing memory, as well as subjective experiences associated with the retrieval of remote public events. Participants also rated the valence of each public event story. The group-rated valence of the public event stories predicted retrieval and the quality of experiences associated with them, such that emotionally arousing events elicited the highest memory rates and the richest experiences. Furthermore, positive public events elicited the highest memory rates. Executive attention moderated only the relationship between event valence and how participants' associated memories are experienced at retrieval, such that superior executive attention resources predicted richer experiences associated with positive relative to neutral and negative stories. The current results extend previous findings on the effects of aging on emotion regulation, suggesting that cognitive control resources modulate subjective experiences associated with retrieved memories for remote real life events, but not memory retrieval itself. (PsycINFO Database Record (c) 2008 APA, all rights reserved). 相似文献