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261.
Recruitment of anterior and posterior structures in lexical-semantic processing: an fMRI study comparing implicit and explicit tasks 总被引:1,自引:0,他引:1
Previous studies examining explicit semantic processing have consistently shown activation of the left inferior frontal gyrus (IFG). In contrast, implicit semantic processing tasks have shown activation in posterior areas including the superior temporal gyrus (STG) and the middle temporal gyrus (MTG) with less consistent activation in the IFG. These results raise the question whether the functional role of the IFG is related to those processes needed to make a semantic decision or to processes involved in the extraction and analysis of meaning. This study examined neural activation patterns during a semantic judgment task requiring overt semantic analysis, and then compared these activation patterns to previously obtained results using the same semantically related and unrelated word pairs in a lexical decision task which required only implicit semantic processing (Rissman, J., Eliassen, J. C., & Blumstein, S. E. (2003). An event-related fMRI investigation of implicit semantic priming. Journal of Cognitive Neuroscience, 15, 1160-1175). The behavioral results demonstrated that the tasks were equivalent in difficulty. fMRI results indicated that the IFG and STG bilaterally showed greater activation for semantically unrelated than related word pairs across the two tasks. Comparison of the two task types across conditions revealed greater activation for the semantic judgment task only in the STG bilaterally and not in the IFG. These results suggest that the pre-frontal cortex is recruited similarly in the service of both the lexical decision and semantic judgment tasks. The increased activation in the STG in the semantic judgment task reflects the greater depth of semantic processing required in this task and indicates that the STG is not simply a passive store of lexical-semantic information but is involved in the active retrieval of this information. 相似文献
262.
This study sought to provide a more rigorous prospective test of two cognitive vulnerability models of depression with longitudinal data from 496 adolescent girls. Results supported the cognitive vulnerability model in that stressors predicted future increases in depressive symptoms and onset of clinically significant major depression for individuals with a negative attributional style, but not for those with a positive attributional style, although these effects were small. This model appeared to be specific to depression, in that it did not predict future increases in bulimia nervosa or substance abuse symptoms. In contrast, results did not support the integrated cognitive vulnerability self-esteem model that asserts stressors should only predict increased depression for individuals with a confluence of negative attributional style and low self-esteem, and this model did not appear to be specific to depression. 相似文献
263.
Prospective and positive mental imagery deficits in dysphoria 总被引:1,自引:0,他引:1
We know less about positive mental imagery than we do about negative mental imagery in depression. This study examined the relationship between depressed mood and the subjective experience of emotion in imagined events; specifically, prospective imagery, and imagery in response to emotionally ambiguous stimuli. One hundred and twenty-six undergraduates completed measures of depression, imagery vividness for future events, and a homograph interpretation task in which they generated images and subsequently rated image pleasantness and vividness. As predicted, compared to low dysphoria, high dysphoria was associated with poorer ability to vividly imagine positive (but not negative) future events. These findings were augmented by the observation that high dysphorics provided lower pleasantness ratings of images generated in response to homographs they interpreted as positive. We suggest that an imbalance in the inability to vividly imagine positive but not negative future events may curtail the ability of high dysphorics to be optimistic. High dysphoric individuals are further disadvantaged: even when they interpret ambiguity positively, the resulting images they generate are associated with less positive affect. Therapeutic strategies that address both such positive-specific imagery biases hold promise for depression treatment innovation. 相似文献
264.
Richard E. Mattson James MacKillop Bryan A. Castelda Emily J. Anderson Peter J. Donovick 《Journal of psychopathology and behavioral assessment》2008,30(3):229-234
Gambling is relatively common among university students, but few studies examine factors that contribute to gambling behavior
in this cohort. Based on evidence that cognitive distortions may play a role in gambling behavior, this study examined the
factor structure of gambling-related cognitive distortions using the Gambler’s Beliefs Questionnaire (GBQ; Steenbergh et al.,
Psychology of Addictive Behaviors, 16:143–149, 2002) in a sample of 393 college undergraduates. Confirmatory factor analysis was used to test a previously
reported two-factor model, comprising dimensions of Illusion of Control (IOC) and Luck/Perseverance (L/P). An oblique, but
not orthogonal, two-factor model was confirmed but did not provide an incrementally better fit to the data than a one-factor
model. However, multiple regression analyses showed that the L/P scale accounted for significant variance in the criterion
when controlling for IOC items. This suggests that IOC items provide redundant information and that gambling-related cognitive
distortions in this sample can be adequately assessed using solely the L/P factor.
相似文献
Richard E. MattsonEmail: |
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267.
Six experiments found that manipulations that increase thought speed also yield positive affect. These experiments varied in both the methods used for accelerating thought (i.e., instructions to brainstorm freely, exposure to multiple ideas, encouragement to plagiarize others' ideas, performance of easy cognitive tasks, narration of a silent video in fast-forward, and experimentally controlled reading speed) and the contents of the thoughts that were induced (from thoughts about money-making schemes to thoughts of five-letter words). The results suggested that effects of thought speed on mood are partially rooted in the subjective experience of thought speed. The results also suggested that these effects can be attributed to the joy-enhancing effects of fast thinking (rather than only to the joy-killing effects of slow thinking). This work is inspired by observations of a link between "racing thoughts" and euphoria in cases of clinical mania, and potential implications of that observed link are discussed. 相似文献
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269.
Materialistic strivings have been implicated as a cause of unhappiness. Gratitude, on the other hand – both in its manifestations
as a chronic affective trait and as a more temporary emotional experience – may be a cause of happiness. In the present paper
we review the empirical research on the relationships among materialism, gratitude, and well-being. We present new correlational
data on the gratitude–materialism relationship and propose that gratitude may have the potential to reduce materialistic strivings
and consequently diminish the negative effects of materialistic strivings on psychological well-being. We conclude with some
recommendations for future research on the relationships among gratitude, materialism, and well-being. 相似文献
270.
Tomas Chamorro-Premuzic Emily Bennett Adrian Furnham 《Personality and individual differences》2007,42(8):1633-1639
This study examined the relationship between the Big Five personality traits (Gosling et al., 2003), trait emotional intelligence (EI) (Petrides & Furnham, 2001) and happiness (Argyle et al., 1989) in a sample of 112 (61 female) student and non-student participants. Strong dispositional determinants of happiness were identified. In line with previous findings, four of the Big Five, namely stability, extraversion, conscientiousness, and agreeableness, were positively correlated with both happiness and trait EI, which explained 18% of unique variance (over and above age and the Big Five) in happiness. Furthermore, a significant amount of shared variance between happiness and the Big Five was explained by trait EI, which partly mediated the paths from stability and conscientiousness to happiness, and fully mediated the link between agreeableness and happiness. Limitations and implications are discussed. 相似文献