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311.
Emotion has been shown to have a modulatory effect on declarative memory. Normal aging is associated with a decline in declarative memory, but whether aging might affect the influence of emotion on memory has not been established. To investigate this, we administered a task that provides a detailed assessment of emotional memory to 80 neurologically normal adults ranging in age from 35 to 85 years. Across ages, memory performance was found to be modulated by the emotional significance of stimuli in a comparable manner (improved memory for gist, compromised memory for visual detail), despite an overall decline in memory performance with increasing age. The results raise the interesting possibility that aging has a differential effect on hippocampal versus amygdala function. 相似文献
312.
Scaling techniques for modeling directional knowledge 总被引:1,自引:0,他引:1
A common way for researchers to model or graphically portray spatial knowledge of a large environment is by applying multidimensional
scaling (MDS) to a set of pairwise distance estimations. We introduce two MDS-like techniques that incorporate people’s knowledge
of directions instead of (or in addition to) their knowledge of distances. Maps of a familiar environment derived from these
procedures were more accurate and were rated by participants as being more accurate than those derived from nonmetric MDS.
By incorporating people’s relatively accurate knowledge of directions, these methods offer spatial cognition researchers and
behavioral geographers a sharper analytical tool than MDS for studying cognitive maps. 相似文献
313.
This review summarizes the literature on the relationship between marital conflict and child maladjustment with an emphasis on variables that qualify, explain the association, or both. Following a historical review, the modest findings on the strength of the association between marital conflict and child maladjustment is explored. The definition of marital conflict is clarified through specification of its various dimensions (frequency, intensity, content, resolution). The role of variables that serve to moderate and/or mediate the relationship between marital conflict and child maladjustment are elaborated. Mediating models include exposure theories (Modeling, Cognitive–Contextual effects: appraisal of threat and blame, and Emotional Insecurity) and changes in the parent–child relationship (Spillover). Variables that moderate or qualify the relationship include children's cognitions and behaviors, contextual factors, and demographic differences. A model is presented summarizing these mechanisms. Research recommendations are proposed and the clinical implications of this literature are addressed. 相似文献
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Callahan D 《Kennedy Institute of Ethics journal》1999,9(1):53-71
The Hastings Center was founded in 1969 to study ethical problems in medicine and biology. The Center arose from a confluence of three social currents: the increased public scrutiny of medicine and its practices, the concern about the moral problems being generated by technological developments, and the desire of one its founders (Callahan) to make use of his philosophical training in a more applied way. The early years of the Center were devoted to raising money, developing an early agenda of issues, and identifying a cadre of people around the country interested in the issues. Various stresses and strains in the Center and the field are identified, and some final reflections are offered on the nature and value of the contributions made by bioethics as an academic field. 相似文献
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Wilma Koutstaal Daniel L. Schacter Marcia K. Johnson Lissa Galluccio 《Memory & cognition》1999,27(3):478-493
Selectively reviewing some items from a larger set of previously learned items increases memory for the items that are reviewed but may also be accompanied by a cost: Memory for the nonreviewed items may be impaired relative to cases where no review occurs at all. This cost to nonreviewed items has primarily been shown in contexts of verbal list learning and in situations where the reviewed and nonreviewed items are categorically or semantically related. Using a more naturalistic impetus to selective review--photographs relating to previously experienced events--we assessed whether the memory of older and younger adults for unrelated complex activities that they themselves had performed was also impaired due to nonreview. Both younger and older adults showed impaired memory for nonreviewed activities when tested with free recall (Experiment 1), but not when tested with recognition or cued recall (Experiment 2). If mitigating retrieval cues are unavailable, selective review may impair memory for nonreviewed everyday events. 相似文献
320.
Joseph S. Lalli Timothy R. Vollmer Patrick R. Progar Carrie Wright John Borrero Dency Daniel Christine Hoffner Barthold Kathy Tocco William May 《Journal of applied behavior analysis》1999,32(3):285-296
We compared the effects of reinforcing compliance with either positive reinforcement (edible items) or negative reinforcement (a break) on 5 participants' escape-maintained problem behavior. Both procedures were assessed with or without extinction. Results showed that compliance was higher and problem behavior was lower for all participants when compliance produced an edible item rather than a break. Treatment gains were achieved without the use of extinction. Results are discussed regarding the use of positive reinforcement to treat escape behavior. 相似文献