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91.
Heather J. Gert 《Philosophia》2018,46(1):131-140
Nagel’s constitutive moral luck is one important type of moral luck, but discussions of it have tended to focus on temperament. Luck in how aware a person is of morally relevant aspects of her situation—awareness luck—though similar in some ways, also raises different issues. Luck in temperament impacts how difficult a person finds it to behave well, while awareness luck impacts whether she even recognizes that the situation is making a moral demand on her. For this reason, awareness luck raises some unique challenges for those who would deny the existence of moral luck. 相似文献
92.
Infants are curious learners who drive their own cognitive development by imposing structure on their learning environment as they explore. Understanding the mechanisms by which infants structure their own learning is therefore critical to our understanding of development. Here we propose an explicit mechanism for intrinsically motivated information selection that maximizes learning. We first present a neurocomputational model of infant visual category learning, capturing existing empirical data on the role of environmental complexity on learning. Next we “set the model free”, allowing it to select its own stimuli based on a formalization of curiosity and three alternative selection mechanisms. We demonstrate that maximal learning emerges when the model is able to maximize stimulus novelty relative to its internal states, depending on the interaction across learning between the structure of the environment and the plasticity in the learner itself. We discuss the implications of this new curiosity mechanism for both existing computational models of reinforcement learning and for our understanding of this fundamental mechanism in early development. 相似文献
93.
Inspired by Barsalou’s (Journal of Experimental Psychology: Learning, Memory, and Cognition, 11, 629–654, 1985) proposal that categories can be represented by ideals, we develop and test a computational model, the ideal dimension model
(IDM). The IDM is tested in its account of the typicality gradient for 11 superordinate natural language concepts and, using
Bayesian model evaluation, contrasted with a standard exemplar model and a central prototype model. The IDM is found to capture
typicality better than do the exemplar model and the central tendency prototype model, in terms of both goodness of fit and
generalizability. The present findings challenge the dominant view that exemplar representations are most successful and present
compelling evidence that superordinate natural language categories can be represented using an abstract summary, in the form
of ideal representations. Supplemental appendices for this article can be downloaded from . 相似文献
94.
We examined measurement invariance and age-related robustness of a short 15-item Big Five Inventory (BFI-S) of personality dimensions, which is well suited for applications in large-scale multidisciplinary surveys. The BFI-S was assessed in three different interviewing conditions: computer-assisted or paper-assisted face-to-face interviewing, computer-assisted telephone interviewing, and a self-administered questionnaire. Randomized probability samples from a large-scale German panel survey and a related probability telephone study were used in order to test method effects on self-report measures of personality characteristics across early, middle, and late adulthood. Exploratory structural equation modeling was used in order to test for measurement invariance of the five-factor model of personality trait domains across different assessment methods. For the short inventory, findings suggest strong robustness of self-report measures of personality dimensions among young and middle-aged adults. In old age, telephone interviewing was associated with greater distortions in reliable personality assessment. It is concluded that the greater mental workload of telephone interviewing limits the reliability of self-report personality assessment. Face-to-face surveys and self-administrated questionnaire completion are clearly better suited than phone surveys when personality traits in age-heterogeneous samples are assessed. 相似文献
95.
Magnussen S Andersson J Cornoldi C De Beni R Endestad T Goodman GS Helstrup T Koriat A Larsson M Melinder A Nilsson LG Rönnberg J Zimmer H 《Memory (Hove, England)》2006,14(5):595-613
Two representative samples of adult Norwegians (n=2000) were asked a set of general and specific questions regarding their beliefs and opinions about human memory. The results indicate that on many questions, such as time of the earliest memories, inhibiting effects of collaboration, and memory for dramatic versus ordinary events, the views of the general public concurred with current research findings, and people in general had realistic views about their own memory performance. On other questions, such as the reliability of olfactory as compared with visual and auditory memory, the memory of small children in comparison with that of adults, the likelihood of repression of adult traumatic memories, and on more general questions such as the possibility of training memory and the capacity limitations of long-term memory, a large proportion of the participants expressed views that are less supported by scientific evidence. Implications of these findings are briefly discussed. 相似文献
96.
Nilsson H Olsson H Juslin P 《Journal of experimental psychology. Learning, memory, and cognition》2005,31(4):600-620
The prominent cognitive theories of probability judgment were primarily developed to explain cognitive biases rather than to account for the cognitive processes in probability judgment. In this article the authors compare 3 major theories of the processes and representations in probability judgment: the representativeness heuristic, implemented as prototype similarity, relative likelihood, or evidential support accumulation (ESAM; D. J. Koehler, C. M. White, & R. Grondin, 2003); cue-based relative frequency; and exemplar memory, implemented by probabilities from exemplars (PROBEX; P. Juslin & M. Persson, 2002). Three experiments with different task structures consistently demonstrate that exemplar memory is the best account of the data whereas the results are inconsistent with extant formulations of the representativeness heuristic and cue-based relative frequency. 相似文献
97.
Mathematical models of cognition often contain unknown parameters whose values are estimated from the data. A question that
generally receives little attention is how informative such estimates are. In a maximum likelihood framework, standard errors
provide a measure of informativeness. Here, a standard error is interpreted as the standard deviation of the distribution
of parameter estimates over multiple samples. A drawback to this interpretation is that the assumptions that are required
for the maximum likelihood framework are very difficult to test and are not always met. However, at least in the cognitive
science community, it appears to be not well known that standard error calculation also yields interpretable intervals outside
the typical maximum likelihood framework. We describe and motivate this procedure and, in combination with graphical methods,
apply it to two recent models of categorization: ALCOVE (Kruschke, 1992) and the exemplar-based random walk model (Nosofsky
& Palmeri, 1997). The applications reveal aspects of these models that were not hitherto known and bring a mix of bad and
good news concerning estimation of these models. 相似文献
98.
According to the novelty/encoding hypothesis (NEH; Tulving & Kroll, 1995), efficacy of encoding information into long-term memory depends on the movelty of the information. Recognition accuracy is higher for novel than for previously familiarized material. This novelty effect is not a mirror effect: the superiority of novel over familiar items is not found in the hit rates but only in the false-alarm rates. The main result in the present replication study was that novel hit rates were higher than familiar ones when the most confident responses were examined separately, and thus a mirror effect could be demonstrated for these data, for both the low- and the high-frequency words. Similarly, the word-frequency effect on hits was stronger when a stricter response criterion was applied. It was concluded that the novelty effect and the word-frequency effect are more similar to one another than has hitherto been thought. 相似文献
99.
Sex differences exist for several cognitive tasks and estrogen has been suggested to influence these differences. Eighteen men and 18 women were matched on age and estradiol level. Potential sex differences were assessed in episodic memory, semantic memory, verbal fluency, problem solving, and visuospatial ability. Significant sex differences, favoring women, were found for tasks assessing episodic memory. Correlations between estradiol level and cognitive performance were significant for face recognition in females. Since sex differences remained in verbal episodic memory tasks and face recognition despite matched levels of estradiol, circulating estradiol does not appear to be of paramount consequence for observed sex differences in episodic memory. 相似文献
100.
In this article, we derive a nonparametric prediction from decision-bound theory (DBT). The crucial aspect that is tested is whether or not familiarity of a stimulus affects response time in categorization. We show that, for our design, DBT, extended with some reasonable and testable assumptions, predicts no familiarity effect. Our prediction is nonparametric in that, rather than fit a specific instantiation of general DBT, we posit only some general assumptions of this theory and derive the prediction from these assumptions. It is found that familiarity did have a strong impact on response time for at least half of our participants. We suggest that DBT is in itself incomplete and should be extended to account for the full range of available data. 相似文献