首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1685篇
  免费   108篇
  1793篇
  2023年   15篇
  2022年   13篇
  2021年   37篇
  2020年   50篇
  2019年   55篇
  2018年   71篇
  2017年   90篇
  2016年   90篇
  2015年   73篇
  2014年   73篇
  2013年   244篇
  2012年   131篇
  2011年   101篇
  2010年   56篇
  2009年   65篇
  2008年   80篇
  2007年   69篇
  2006年   54篇
  2005年   39篇
  2004年   37篇
  2003年   34篇
  2002年   30篇
  2001年   20篇
  2000年   18篇
  1999年   12篇
  1998年   10篇
  1997年   8篇
  1996年   11篇
  1994年   7篇
  1993年   9篇
  1992年   11篇
  1991年   9篇
  1988年   5篇
  1987年   5篇
  1986年   7篇
  1985年   6篇
  1984年   10篇
  1983年   9篇
  1982年   9篇
  1981年   9篇
  1980年   9篇
  1979年   12篇
  1978年   10篇
  1977年   5篇
  1975年   4篇
  1974年   7篇
  1973年   4篇
  1972年   5篇
  1971年   5篇
  1967年   4篇
排序方式: 共有1793条查询结果,搜索用时 0 毫秒
921.
Participant sex and a theorized correlate of biological sex, relational interdependence, were tested as relative predictors of the extent to which daters 1) missed and 2) used emotional support to cope when geographically separated from their dating partners. One hundred twenty-four daters completed multiple measures of missing and coping during their colleges' winter breaks. Results from regression analyses indicated that levels of missing and seeking emotional support differed as a function of biological sex. Further, relational interdependence was reliably associated with missing and seeking emotional support in theoretically consistent ways. Mediation analyses highlighted the importance of considering relational interdependence or other individual differences that covary with biological sex when studying close relationship phenomena.  相似文献   
922.
Potential loss of group distinctiveness can represent a threat to the existence of a group. Across three studies (Ns = 42, 60, 94), a mediated‐moderation model was tested in which the interactive effects of group identification and potential ingroup distinctiveness loss predicts the desire to engage in ingroup protective action to the extent that collective angst (i.e., concern for the ingroup's future vitality) is aroused. It was hypothesized that the threat of potential distinctiveness loss would result in collective angst and subsequent support for protective action among high, but not necessarily low, identified group members. Results provided support for this model within the context of French Canadian distinctiveness from English Canada (Experiment 1, where the outcome measure was the desire for a sovereign Quebec) and Canadian distinctiveness from the United States (Experiments 2 and 3, where the outcome was support for action to protect Canadian sovereignty and rejection of a North American Union respectively). When and why collective angst facilitates ingroup protective action is discussed. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献   
923.
Research on retrieval-induced forgetting has shown that retrieval can cause the forgetting of related or competing items in memory (Anderson, Bjork, & Bjork, 1994). In the present research, we examined whether an analogous phenomenon occurs in the context of creative problem solving. Using the Remote Associates Test (RAT; Mednick, 1962), we found that attempting to generate a novel common associate to 3 cue words caused the forgetting of other strong associates related to those cue words. This problem-solving-induced forgetting effect occurred even when participants failed to generate a viable solution, increased in magnitude when participants spent additional time problem solving, and was positively correlated with problem-solving success on a separate set of RAT problems. These results implicate a role for forgetting in overcoming fixation in creative problem solving.  相似文献   
924.
This study examined the relationship between the developmental trajectories of neuropsychological functioning and ADHD symptomatology in a longitudinal sample of children ages 9 to 14. Participants and measures were derived from the Multimodal Treatment Study for ADHD including 534MTA participants and 254 normal controls. Despite improvement over time, MTA participants continued to receive higher ratings of ADHD symptomatology and exhibit greater difficulties across the majority of neuropsychological outcomes. No relations were found between improvements in neuropsychological functioning and ADHD symptomatology over time. Findings provide support for the persistence of neuropsychological functioning and ADHD symptomatology. Findings did not support the hypothesized relation between improvements in frontally-mediated neuropsychological functioning and ADHD symptomatology possibly due to the brief 1-year lag and limited assessment battery. Findings are discussed in relation to neuropsychological development including recommendations for future research.  相似文献   
925.
The Wisconsin Schizotypy Scales—the Perceptual Aberration, Magical Ideation, Physical Anhedonia, and Revised Social Anhedonia Scales—have been used extensively since their development in the 1970s and 1980s. Based on psychometric analyses using item response theory, the present work presents 15-item short forms of each scale. In addition to being briefer, the short forms omit items with high differential item functioning. Based on data from a sample of young adults (n = 1144), the short forms have strong internal consistency, and they mirror effects found for the longer scales. They thus appear to be a good option for researchers interested in the brief assessment of schizotypic traits. The items are listed in an Appendix A.  相似文献   
926.
Episodic memories formed during infancy are rapidly forgotten, a phenomenon associated with infantile amnesia, the inability of adults to recall early-life memories. In both rats and mice, infantile memories, although not expressed, are actually stored long term in a latent form. These latent memories can be reinstated later in life by certain behavioral reminders or by artificial reactivations of neuronal ensembles activated at training. Whether the recovery of infantile memories is limited by developmental age, maternal presence, or contingency of stimuli presentation remains to be determined. Here, we show that the return of inhibitory avoidance memory in rats following a behavioral reactivation consisting of an exposure to the context (conditioned stimuli [CS]) and footshock (unconditioned stimuli [US]) given in a temporally unpaired fashion, is evident immediately after US and is limited by the developmental age at which the reactivations are presented; however, it is not influenced by maternal presence or the time interval between training and reactivation. We conclude that one limiting factor for infantile memory reinstatement is developmental age, suggesting that a brain maturation process is necessary to allow the recovery of a “lost” infantile memory.

Hippocampus-dependent episodic memories formed early in life are rapidly forgotten. This process of forgetting is evolutionarily conserved and is associated with infantile amnesia, the inability of adults to recall early-life memories (Campbell and Spear 1972; Rovee-Collier 1999; Hayne 2004; Josselyn and Frankland 2012; Callaghan et al. 2014; Madsen and Kim 2016; Alberini and Travaglia 2017).Although they are rapidly forgotten, early-life experiences influence brain functions throughout life (Jacobs and Nadel 1985; Meaney et al. 1988; Sroufe et al. 1990; Brunson et al. 2005; Pryce et al. 2005; Mineka and Zinbarg 2006; Bale et al. 2010; Poulos et al. 2014; Perry and Sullivan 2014) and produce long-lasting biological changes in the brain. For example, aversive early-life experiences regulate the expression of hippocampal glucocorticoid receptor and hypothalamic–pituitary–adrenal (HPA) functions in a persistent fashion (Champagne and Curley 2009). Moreover, threatening experiences in early life can predispose individuals to psychopathologies such as post-traumatic stress disorder (PTSD) and mood and anxiety disorders (Heim and Nemeroff 2001). Consistent with this long-lasting influence on behavior, studies in rodent models have shown that, in contrast to what was previously believed, memories formed in infancy (at postnatal days 16–18 [PN16–PN18]) although not expressed, are not lost. Rather, they are stored over the longer term in a latent form and can reemerge at later times, up to adulthood, following behavioral reactivations or artificial stimulation of the neuronal ensembles activated at learning (Travaglia et al. 2016; Guskjolen et al. 2018; Bessières et al. 2020).In our previous studies based on rat inhibitory avoidance (IA), a paradigm in which the animal learns to avoid a context previously paired with a footshock, we confirmed that an infantile episodic learning event given at PN17 resulted in the typical rapid forgetting. We then found that, however, this memory was stored long term in a latent form, as demonstrated by the observation that it could reemerge following a behavioral reactivation consisting of exposure to the training context (conditioned stimulus [CS]) and a later time footshock of the same intensity that was used during training (unconditioned stimulus [US]) but now given in a distinct context. Reexperiencing either the context or the footshock alone failed to reinstate the infantile memory (Travaglia et al. 2016), suggesting that the return of infantile memory is limited by certain boundaries.Several questions about the conditions for the recovery of latent, infantile episodic memories remain to be addressed. First, is infantile memory reinstatement following the unpaired US presentation temporally regulated? Second, is there an age limit for memory reinstatement? Third, given that other types of learning, such as non-hippocampus-dependent cued conditioning, are regulated by the maternal presence during infancy (Moriceau and Sullivan 2006), is infantile episodic memory reinstatement limited or regulated by the presence of the mother? In this study, we set out to address these questions using IA in infant rats.  相似文献   
927.
Gender differences in alcohol consumption and depressive symptoms are well known. This study focused on the associations of gender with attributional style, coping style, and negative life events in explaining these differences. The association of gender with each of the predictor and outcome variables was examined. One hundred eight (51 men, 57 women) undergraduate university students, ages 18–21, completed validated measures of depression, alcohol consumption, attributional style, coping style, and negative life events. Participants reported mild-moderate levels of depressive symptoms, similar to comparable samples. In contrast, alcohol consumption was lower than expected. Depressive symptoms were associated with negative events and rumination among both men and women. Pessimism and wine consumption were correlated with depression among women only. Although men consumed more alcohol than did women, a gender difference in depressive symptoms was not found. Potential implications of these findings are discussed.  相似文献   
928.
Book reviewed:
Ancient Israel, Judaism and Christianity in Contemporary Perspective. Essays in Memory of Karl-Johan Illman , Jacob Neusner, Alan J. Avery-Peck, Antti Laato, Risto Nurmela and Karl Gustav Sandelin (eds), Lanham University Press of America 2006 (0-7618-3362-5), ix + 448 pp., pb $41.00  相似文献   
929.
Pastoral Psychology - To examine the association between occupational distress, physical and mental health, and health behaviors among clergy, a convenience sample of full-time Christian clergy...  相似文献   
930.
According to relational views of autonomy, some social relations or forms of dependence are necessary for autonomous agency. Recent relational theorists have primarily focused on autonomy of action or practical autonomy, and the result has been a shift away from individualistic conceptions of autonomy in the practical realm. Despite these trends, individualistic conceptions are still the default when it comes to autonomy of belief or intellectual autonomy. In this paper, I argue for a relational account of intellectual autonomy. Specifically, I claim that intellectual autonomy requires a sense of one’s standing as an equal member of the epistemic community.  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