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331.
Recent research and meta-analytic reviews suggest that 1 observed pattern of impaired and intact memory performance with advancing age is a deficit in measures of episodic but not semantic memory. The authors used computational modeling to explore a number of age-related parameters to account for this pattern. A 2-parameter solution based on lifelong experience successfully fit the pattern of results in 5 published studies of the word-frequency mirror effect and paired-associate recognition. Lifelong experience increases the strength (resting level of activation) of concepts in the network but also saturates the network with an increasing number of episodic associations to each concept. More episodic associations to each concept mean that activation spreads more diffusely, making retrieval of any newly established memory trace less likely; however, the greater strength of a concept makes recognition based on familiarity more likely. The simulations provide good quantitative fits to the extant age-related memory literature and support the plausibility of this mechanistic account. 相似文献
332.
Kryste Ferguson Sandra Masur Lynne Olson Julio Ramirez Elisa Robyn Karen Schmaling 《Journal of Academic Ethics》2007,5(2-4):189-198
Institutions create their own internal cultures, including the culture of ethics that pervades scientific research, academic policy, and administrative philosophy. This paper addresses some of the issues involved in institutional enhancement of its culture of research ethics, focused on individual empowerment and strategies that individuals can use to initiate institutional change. 相似文献
333.
Kelly JG Azelton LS Lardon C Mock LO Tandon SD Thomas M 《American journal of community psychology》2004,33(3-4):205-216
This article provides an account of a 10-year collaborative documentation of community leadership in an African American community on the South side of Chicago. The stories are oriented to several critical incidents in the life course of the collaboration. They are told from the perspectives of one university professor, four graduate students, and one community leader. Together they provide an account of how this research was shaped by the interactions of the research team with members of the community, how research questions emerged, methodologies were developed, ways of gathering data were tried and tested, and interpretations of data unfolded. Special attention is given to the ways in which the process and products of this research contributed to the community's own process of leadership development. The stories also discuss the various roles participants in this collaboration played both in the academic arena and in the community, and how they experienced gender, race, nationality, and social status. 相似文献
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335.
Reder LM Weber K Shang J Vanyukov PM 《Journal of experimental psychology. Human perception and performance》2003,29(3):631-649
A localization task required participants to indicate which of 4 locations contained a briefly displayed target. Most displays also contained a distractor that was not equally probable in these locations, affecting performance dramatically. Responses were faster when a display had no distractor and almost as fast when the distractor was in its frequent location. Conversely, responses were slower when targets appeared in frequent-distractor locations, even thou targets were equally likely in each location. Negative-priming effects were reliably smaller when targets followed distractors in the frequent-distractor location compared to the rare-distractor location, challenging the episodic-retrieval account Experiment 2 added a 5th location that rarely displayed distractors and never targets, yet responses slowed most when distractors appeared there. The results confirmed that the attentional system is sensitive to first- and higher-order statistical patterns and can make short- and long-term adjustments in preferences based on prior history of inspecting unsuccessful locations. 相似文献
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337.
Few effective psychosocial treatment models for depressed adolescents have been developed, let alone ones that use the developmentally potent context of the family as the focus of intervention. Attachment-based family therapy (ABFT) is a brief, manualized treatment model tailored to the specific needs of depressed adolescents and their families. Attachment theory serves as the main theoretical framework to guide the process of repairing relational ruptures and rebuilding trustworthy relationships. Empirically supported risk factors for depression are the primary problem states that therapists target with specific treatment strategies or tasks. Parent problem states include criticism/hostility, personal distress, parenting skills, and disengagement. Adolescent problem states include motivation, negative self-concept, poor affect regulation, and disengagement. Intervention tasks include relational reframing, building alliances with the adolescent and with the parent, addressing attachment failures, and building competency. A small, randomized clinical trial provides initial support for the model. Several process research studies, using both qualitative and quantitative methods, have helped refine the clinical guidelines for each treatment task. ABFT is a promising new treatment for depressed adolescents and more research on it is warranted. 相似文献
338.
Diana RA Reder LM 《Journal of experimental psychology. Learning, memory, and cognition》2006,32(4):805-815
Low-frequency words produce more hits and fewer false alarms than high-frequency words in a recognition task. The low-frequency hit rate advantage has sometimes been attributed to processes that operate during the recognition test (e.g., L. M. Reder et al., 2000). When tasks other than recognition, such as recall, cued recall, or associative recognition, are used, the effects seem to contradict a low-frequency advantage in memory. Four experiments are presented to support the claim that in addition to the advantage of low-frequency words at retrieval, there is a low-frequency disadvantage during encoding. That is, low-frequency words require more processing resources to be encoded episodically than high-frequency words. Under encoding conditions in which processing resources are limited, low-frequency words show a larger decrement in recognition than high-frequency words. Also, studying items (pictures and words of varying frequencies) along with low-frequency words reduces performance for those stimuli. 相似文献
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340.
Park H Reder LM Dickison D 《Journal of experimental psychology. Learning, memory, and cognition》2005,31(3):568-578
K. J. Malmberg, J. Holden, and R. M. Shiffrin (2004) reported more false alarms for low- than high-frequency words when the foils were similar to the targets. According to the source of activation confusion (SAC) model of memory, that pattern is based on recollection of an underspecified episodic trace rather than the error-prone familiarity process. The authors tested the SAC account by varying whether participants were warned about the nature of similar foils and whether the recognition test required the discrimination. More false alarms for low-frequency similar items occurred only when participants were not warned at study about the subtle features to be discriminated later. The differential false-alarm rate by word frequency corresponded to the pattern of remember responses obtained when the test instructions did not ask for a subtle discrimination, supporting the SAC account that reversed false-alarm rates to similar foils are based on the recollection process. 相似文献