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131.
When a learner is taught a new response, the stimuli that influence its display are often unknown. The presence or absence of these stimuli alters the probability of occurrence of the response. By identifying the stimuli influencing the probability of newly acquired responses, interventionists may program for their generalization more effectively and efficiently. This investigation describes the application of an operant methodology to assess functional relationships between responses and specific stimulus variables. Four young adults with moderate mental retardation were taught to include “please” as part of requests they made in school. Four environmental stimuli, present during training, were assessed for the controlling properties they acquired. Each of the four was assessed prior to and after training by presenting it in isolation (i.e., the other three were varied). If the presence of a single stimulus associated with training did not occasion “please,” then pairs of stimuli were probed. The results revealed that single-stimulus probing occasioned responding by only 1 learner; paired-stimulus probing set the occasion for including “please” by 2 others. Control of the 4th learner's responding was lost before training was introduced, because he began including “please” in his requests during baseline. The implications of these results are discussed in terms of analyzing stimulus control and promoting stimulus generalization. 相似文献
132.
Joel D. Lieberman Sheldon Solomon Jeff Greenberg Holly A. McGregor 《Aggressive behavior》1999,25(5):331-348
Laboratory experiments investigating aggressive behavior have operationalized and assessed aggression in a variety of ways; however, these measures are often problematic because they do not create a situation in which participants perceive potential for real harm to come to the target, there is a risk of actual harm to the target, or they are too familiar to participants. To overcome these limitations, we developed a new method for measuring aggression, specifically, the amount of hot sauce administered to a target known to dislike spicy foods. We summarize a series of experiments assessing theory‐based hypotheses regarding aggression in which this measure is employed. We then briefly consider the strengths and limitations of this new measure. Aggr. Behav. 25:331–348, 1999. © 1999 Wiley‐Liss, Inc. 相似文献
133.
Christopher J. Armitage Mark Conner 《Journal of community & applied social psychology》1999,9(4):261-272
The present study was designed to assess the predictive validity of a theory of planned behaviour extended to include self‐identity, in the context of health‐related food choice. Following criticism of the use of questionnaires in social cognitive research, the impact of questionnaire format (random vs structured) and social desirability on questionnaire responses was assessed. Findings indicated that intention was the principal determinant of food choice; attitude, subjective norm and self‐identity were independently predictive of intention. There was only weak evidence to suggest effects of social desirability or questionnaire format on component relationships. The present study indicates that the impact of questionnaire format and social desirability on models such as the theory of planned behaviour is minimal, and that such models are robust predictors of food choice. Copyright © 1999 John Wiley & Sons, Ltd. 相似文献
134.
AbstractExtended redundancy analysis (ERA) combines linear regression with dimension reduction to explore the directional relationships between multiple sets of predictors and outcome variables in a parsimonious manner. It aims to extract a component from each set of predictors in such a way that it accounts for the maximum variance of outcome variables. In this article, we extend ERA into the Bayesian framework, called Bayesian ERA (BERA). The advantages of BERA are threefold. First, BERA enables to make statistical inferences based on samples drawn from the joint posterior distribution of parameters obtained from a Markov chain Monte Carlo algorithm. As such, it does not necessitate any resampling method, which is on the other hand required for (frequentist’s) ordinary ERA to test the statistical significance of parameter estimates. Second, it formally incorporates relevant information obtained from previous research into analyses by specifying informative power prior distributions. Third, BERA handles missing data by implementing multiple imputation using a Markov Chain Monte Carlo algorithm, avoiding the potential bias of parameter estimates due to missing data. We assess the performance of BERA through simulation studies and apply BERA to real data regarding academic achievement. 相似文献
135.
Hall K 《Theoretical medicine and bioethics》2002,23(1):55-73
This study examines the processes ofdecision-making used by intensive care(critical care) specialists. Ninety-ninespecialists completed a questionnaire involvingthree clinical cases, using a novel methodologyinvestigating the role of uncertainty andtemporal-related factors, and exploring a rangeof ethical issues. Validation and triangulationof the results was done via a comparison studywith a medically lay, but highly informed groupof 37 law students. For both study groups,constructing reasons for a decision was largelyan interpretative and imaginative exercise thatwent beyond the data (as presented), commonlyresulting in different reasons supporting thesame conclusions and similar reasons supportingopposite conclusions. The skills of ethicalimagination and interpretation were related toan individual's prior lived experience,construed in the broadest sense. Application ofthese skills of ethical imagination andinterpretation always occurred, to some degree,in a state of uncertainty and almost alwaysinvolved temporal relationships.Using these results, a theory of ethicaldecision-making is proffered. Three levels ortypes of reasoning processes may be present.Type I decision-making involves the applicationof rules, usually in a deductive fashion. TypeII decision-making is characterised by aprocess where a plurality of reasons arebalanced, weighed and sifted with each other.Type III decision-making is intimately linkedwith respondents lived experiences and `crafts'the content of type I and II reasoningprocesses, via the application of ethicalimagination and interpretation. Relationshipsbetween these three types of reasoningprocesses, and with narrative ethics, are alsodiscussed. 相似文献
136.
In this paper we analyse some misleading theses concerning the oldcontroversy over the relation between mind and body presented incontemporary medical literature. We undertake an epistemologicalclarification of the axiomatic structure of medical methods. Thisclarification, in turn, requires a precise philosophical explanation ofthe presupposed concepts. This analysis will establish two results: (1)that the mind-body dualism cannot be understood as a kind of biologicalvariation of the subject-object dichotomy in physics, and (2) that thethesis of the incompatibility between somatic and psychosomatic medicineheld by naturalists and others lacks solid epistemologicalfoundation. 相似文献
137.
William West 《Counselling and Psychotherapy Research》2001,1(2):126-131
The grounded theory approach has become established as the qualitative methodology of choice for many counselling and psychotherapy researchers. It is now becoming apparent to many researchers that there are significant difficulties associated with defining what the grounded theory method actually is, and how is should be implemented. In addition, its popularity has tended to keep other qualitative approaches under‐explored and under‐utilised. This paper explores some of the methodological issues raised by the grounded theory approach, before presenting and then contrasting heuristic inquiry as a very different but equally useful form of qualitative methodology. Finally, the notion of researcher as bricoleur will be considered in the light of the need to develop pluralistic approaches to qualitative research in counselling and psychotherapy. 相似文献
138.
Wayne Wright 《Philosophical Studies》2007,132(2):301-330
This paper argues that the form of explanation at issue in the hard problem of consciousness is scientifically irrelevant,
despite appearances to the contrary. In particular, it is argued that the ‘sense of understanding’ that plays a critical role
in the form of explanation implicated in the hard problem provides neither a necessary nor a sufficient condition on satisfactory
scientific explanation. Considerations of the actual tools and methods available to scientists are used to make the case against
it being a necessary condition, and work by J.D. Trout that exploits psychological research on the hindsight and overconfidence
biases is used to show that it is not a sufficient condition. It is argued, however, that certain intellectual and moral concerns
give us good reason to still try to meet the hard problem’s explanatory challenge, despite its extrascientific nature. 相似文献
139.
The stress of care giving for spouses and adult children has been extensively documented in the empirical literature. More recently attention has been paid to children's involvement in family care giving. Qualitative studies in the social welfare field have highlighted the social restrictions caring places upon children. There remains a need, however, to understand what children are thinking and feeling in an effort to cope with their care-giving demands. This study used a focus group methodology and individual interviews to explore the experiences of 17 young carers aged between 10 and 16. Thematic analysis was employed to identify themes relating to the nature of stressors, their appraisal of them, and the coping strategies they use to manage the task of caring. 相似文献
140.
Carol Nickerson 《Journal of Happiness Studies》2007,8(4):537-561
Fredrickson’s (1998, ‘What good are positive emotions?’, Review of General Psychology 2, pp. 300–319; 2001, ‘The role of positive emotions in positive psychology: The broaden-and-build theory of positive emotions’, American Psychologist 56, pp. 218–226) broaden-and-build theory of positive emotions posits that positive emotions improve coping skills and that improved coping skills increase positive emotions, resulting in an upward spiral toward emotional well-being. Fredrickson and Joiner (2002, ‘Positive emotions trigger upward spirals toward emotional well-being’, Psychological Science 13, pp. 172–175) claimed that the results of their analyses supported the broaden-and-build theory but in fact their analyses did not test this theory. The broaden-and-build theory clearly describes a within-occasion across-persons psychological process; the analyses, however, tested a within-occasion across-persons theory. 相似文献