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A new generational cohort is emerging from the Millennial market segment as a result of cataclysmic events that have occurred since 2008. Interviews with college upperclassmen in the United States identified significant events influencing their values, the values arising from these events, and new values not associated with older Millennials. The most important events identified included the Great Recession, 9/11, and the election of the first African-American president. Values of Millennials were assessed in online surveys of college juniors and seniors in the United States in the fall of 2009 and 2010 and among older Millennials, aged 27–31, during the summer of 2010. The values most strongly differentiating the younger and older Millennials were “piety” and “thrift.” Younger Millennials in the United States are less thrifty and more secular and sexually permissive than older Millennials. They are also less patriotic and less concerned about politics, sustainability, saving, and making mistakes in life. This suggests a splintering of the Millennials cohort as a result of the Great Recession and the potential emergence of a younger “entitlement” cohort. It also suggests further investigation of cross-national value shifts among younger Millennials, prompted by the Great Recession. Copyright © 2012 John Wiley & Sons, Ltd.  相似文献   
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Lewis rats have been shown to make more impulsive choices than Fischer 344 rats in discrete-trial choice procedures that arrange fixed (i.e., nontitrating) reinforcement parameters. However, nontitrating procedures yield only gross estimates of preference, as choice measures in animal subjects are rarely graded at the level of the individual subject. The present study was designed to examine potential strain differences in delay discounting using an adjusting-amount procedure, in which distributed (rather than exclusive) choice is observed due to dynamic titration of reinforcer magnitude across trials. Using a steady-state version of the adjusting-amount procedure in which delay was manipulated between experimental conditions, steeper delay discounting was observed in Lewis rats compared to Fischer 344 rats; further, delay discounting in both strains was well described by the traditional hyperbolic discounting model. However, upon partial completion of the present study, a study published elsewhere (Wilhelm & Mitchell, 2009) demonstrated no difference in delay discounting between these strains with the use of a more rapid version of the adjusting-amount procedure (i.e., in which delay is manipulated daily). Thus, following completion of the steady-state assessment in the present study, all surviving Lewis and Fischer 344 rats completed an approximation of this rapid-determination procedure in which no strain difference in delay discounting was observed.  相似文献   
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Perception of motion affects language processing   总被引:1,自引:0,他引:1  
Recently developed accounts of language comprehension propose that sentences are understood by constructing a perceptual simulation of the events being described. These simulations involve the re-activation of patterns of brain activation that were formed during the comprehender's interaction with the world. In two experiments we explored the specificity of the processing mechanisms required to construct simulations during language comprehension. Participants listened to (and made judgments on) sentences that described motion in a particular direction (e.g. "The car approached you"). They simultaneously viewed dynamic black-and-white stimuli that produced the perception of movement in the same direction as the action specified in the sentence (i.e. towards you) or in the opposite direction as the action specified in the sentence (i.e. away from you). Responses were faster to sentences presented concurrently with a visual stimulus depicting motion in the opposite direction as the action described in the sentence. This suggests that the processing mechanisms recruited to construct simulations during language comprehension are also used during visual perception, and that these mechanisms can be quite specific.  相似文献   
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In a frequently used suboptimal‐choice procedure pigeons choose between an alternative that delivers three food pellets with p = 1.0 and an alternative that delivers ten pellets with p = 0.2. Because pigeons reliably choose the probabilistic (suboptimal) alternative, the procedure has been proposed as a nonhuman analog of human gambling. The present experiments were conducted to evaluate two potential threats to the validity of this procedure. Experiments 1 and 2 evaluated if pigeons obtained food at a lower unit price (i.e., pecks per pellet) on the suboptimal alternative than on the optimal alternative. When pigeons worked under this suboptimal procedure they all preferred the suboptimal alternative despite some pigeons paying a higher price for food on that alternative. In Experiment 2, when the unit price ratio more closely approximated the inverse of the expected value ratio, pigeons continued to prefer the suboptimal alternative despite its economic suboptimality. Experiment 3 evaluated if, in accord with the string‐theory of gambling, the valuation of the suboptimal alternative was increased when pigeons misattributed a subset of the suboptimal no‐food trials to the optimal alternative. When trial sequences were arranged to minimize these possible attribution errors, pigeons still preferred the suboptimal alternative. These data remove two threats to the validity of the suboptimal choice procedure; threats that would have suggested that suboptimal choice reflects economic maximization.  相似文献   
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The occurrence of discrimination in the real world is difficult to determine objectively, as it is defined in part by intentions. The perception of discrimination may therefore be influenced by one's interpretation of the intentions of others. In order to examine psychological characteristics that influence the perception of ethnic discrimination, 164 Armenian, Mexican American, and Vietnamese adolescents completed measures of perceived discrimination (PD), self-esteem, mastery, depression/anxiety, intergroup competence, and ethnic identity, as well as demographic variables. A path analysis showed that higher depression/anxiety scores and lower intergroup competence predicted more PD; depression/anxiety and intergroup competence were in turn predicted by self-esteem and mastery, respectively. Birthplace and socioeconomic status had an indirect effect on PD, via intergroup competence. The results suggest the importance of psychological variables in the perception of discrimination.  相似文献   
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