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41.
42.
Halpern J 《The Journal of clinical ethics》2007,18(4):380-383
43.
The world of competitive Scrabble: Novice and expert differences in visuopatial and verbal abilities
Competitive Scrabble players spend a mean of 4.5 hr a week memorizing words from the official Scrabble dictionary. When asked if they learn word meanings when studying word lists, only 6.4% replied "always," with the rest split between "sometimes" and "rarely or never." Number of years of play correlated positively with expertise ratings, suggesting that expertise develops with practice. To determine the effect of hours of practice (M = 1,904), the authors compared experts with high-achieving college students on a battery of cognitive tests. Despite reporting that they usually memorize word lists without learning meanings, experts defined more words correctly. Reaction times on a lexical decision task (controlling for age) correlated with expertise ratings, suggesting that experts develop faster access to word identification. Experts' superiority on visuospatial processing was found for reaction time on 1 of 3 visuospatial tests. In a study of memory for altered Scrabble boards, experts outperformed novices, with differences between high and low expertise on memory for boards with structure-deforming transformations. Expert Scrabble players showed superior performance on selected verbal and visuospatial tasks that correspond to abilities that are implicated in competitive play. 相似文献
44.
Theoretical models of working memory suggest that the simultaneous processing and storage of information is carried out either as separate or binded mechanisms. We explored working memory capacity and strategy in two elite groups of experts to test the separate versus binded hypotheses. Visuospatial and verbal abilities were measured in elite nationally ranked SCRABBLE and crossword experts and compared with college students matched on quantitative and verbal SAT scores, both exceeding 700 on average. SCRABBLE and crossword experts significantly outperformed college students on all cognitive measures. The crossword experts scored significantly higher on a test of analogies than SCRABBLE experts, but performance for cognitive ability tasks did not significantly differ between expert groups. The techniques and strategies used during competitive play, however, did differ significantly. Findings suggest that visuospatial and verbal working memory capacities of SCRABBLE and crossword experts are binded and occur at extraordinarily high levels. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
45.
Meaghan O'Keefe Sarah Perrault Jodi Halpern Lisa Ikemoto Mark Yarborough UC North Bioethics Collaboratory for Life & Health Sciences 《The American journal of bioethics : AJOB》2015,15(12):3-10
Metaphors used to describe new technologies mediate public understanding of the innovations. Analyzing the linguistic, rhetorical, and affective aspects of these metaphors opens the range of issues available for bioethical scrutiny and increases public accountability. This article shows how such a multidisciplinary approach can be useful by looking at a set of texts about one issue, the use of a newly developed technique for genetic modification, CRISPRcas9. 相似文献
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Todd M. Gureckis Jay Martin John McDonnell Alexander S. Rich Doug Markant Anna Coenen David Halpern Jessica B. Hamrick Patricia Chan 《Behavior research methods》2016,48(3):829-842
Online data collection has begun to revolutionize the behavioral sciences. However, conducting carefully controlled behavioral experiments online introduces a number of new of technical and scientific challenges. The project described in this paper, psiTurk, is an open-source platform which helps researchers develop experiment designs which can be conducted over the Internet. The tool primarily interfaces with Amazon’s Mechanical Turk, a popular crowd-sourcing labor market. This paper describes the basic architecture of the system and introduces new users to the overall goals. psiTurk aims to reduce the technical hurdles for researchers developing online experiments while improving the transparency and collaborative nature of the behavioral sciences. 相似文献
48.
Nisbett RE Aronson J Blair C Dickens W Flynn J Halpern DF Turkheimer E 《The American psychologist》2012,67(2):130-159
We review new findings and new theoretical developments in the field of intelligence. New findings include the following: (a) Heritability of IQ varies significantly by social class. (b) Almost no genetic polymorphisms have been discovered that are consistently associated with variation in IQ in the normal range. (c) Much has been learned about the biological underpinnings of intelligence. (d) "Crystallized" and "fluid" IQ are quite different aspects of intelligence at both the behavioral and biological levels. (e) The importance of the environment for IQ is established by the 12-point to 18-point increase in IQ when children are adopted from working-class to middle-class homes. (f) Even when improvements in IQ produced by the most effective early childhood interventions fail to persist, there can be very marked effects on academic achievement and life outcomes. (g) In most developed countries studied, gains on IQ tests have continued, and they are beginning in the developing world. (h) Sex differences in aspects of intelligence are due partly to identifiable biological factors and partly to socialization factors. (i) The IQ gap between Blacks and Whites has been reduced by 0.33 SD in recent years. We report theorizing concerning (a) the relationship between working memory and intelligence, (b) the apparent contradiction between strong heritability effects on IQ and strong secular effects on IQ, (c) whether a general intelligence factor could arise from initially largely independent cognitive skills, (d) the relation between self-regulation and cognitive skills, and (e) the effects of stress on intelligence. 相似文献
49.
The vocal imitation of pitch by singing requires one to plan laryngeal movements on the basis of anticipated target pitch events. This process may rely on auditory imagery, which has been shown to activate motor planning areas. As such, we hypothesized that poor-pitch singing, although not typically associated with deficient pitch perception, may be associated with deficient auditory imagery. Participants vocally imitated simple pitch sequences by singing, discriminated pitch pairs on the basis of pitch height, and completed an auditory imagery self-report questionnaire (the Bucknell Auditory Imagery Scale). The percentage of trials participants sung in tune correlated significantly with self-reports of vividness for auditory imagery, although not with the ability to control auditory imagery. Pitch discrimination was not predicted by auditory imagery scores. The results thus support a link between auditory imagery and vocal imitation. 相似文献
50.
Goodson J Helstrom A Halpern JM Ferenschak MP Gillihan SJ Powers MB 《Psychological reports》2011,109(2):573-599
Among U.S. veterans who have been exposed to combat-related trauma, significantly elevated rates of posttraumatic stress disorder (PTSD) are reported. Veterans with PTSD are treated for the disorder at Veterans Affairs (VA) hospitals through a variety of psychotherapeutic interventions. Given the significant impairment associated with PTSD, it is imperative to assess the typical treatment response associated with these interventions. 24 studies with a total sample size of 1742 participants were quantitatively reviewed. Overall, analyses showed a medium between-groups effect size for active treatments compared to control conditions. Thus, the average VA-treated patient fared better than 66% of patients in control conditions. VA treatments incorporating exposure-based interventions showed the highest within-group effect size. Effect sizes were not moderated by treatment dose, sample size, or publication year. Findings are encouraging for treatment seekers for combat-related PTSD in VA settings. 相似文献