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191.
Roger Buehler Dale Griffin Kent C.H. Lam Jennifer Deslauriers 《Organizational behavior and human decision processes》2012
People typically underestimate the time necessary to complete their tasks. According to the planning fallacy model of optimistic time predictions, this underestimation occurs because people focus on developing a specific plan for the current task and neglect the implications of past failures to meet similar deadlines. We extend the classic planning fallacy model by proposing that a phenomenal quality of mental imagery – the visual perspective that is adopted – may moderate the optimistic prediction bias. Consistent with this proposal, participants in four studies predicted longer completion times, and thus were less prone to bias, when they imagined an upcoming task from the third-person rather than first-person perspective. Third-person imagery reduced people’s focus on optimistic plans, increased their focus on potential obstacles, and decreased the impact of task-relevant motives on prediction. The findings suggest that third-person imagery helps individuals generate more realistic predictions by reducing cognitive and motivational processes that typically contribute to bias. 相似文献
192.
193.
Quinlan PT Cohen DJ 《Journal of experimental psychology. Learning, memory, and cognition》2012,38(5):1432-1438
Findings of 2 experiments are reported that challenge the current understanding of visual short-term memory (VSTM). In both experiments, a single study display, containing 6 colored shapes, was presented briefly and then probed with a single colored shape. At stake is how VSTM retains a record of different objects that share common features: In the 1st experiment, 2 study items sometimes shared a common feature (either a shape or a color). The data revealed a color sharing effect, in which memory was much better for items that shared a common color than for items that did not. The 2nd experiment showed that the size of the color sharing effect depended on whether a single pair of items shared a common color or whether 2 pairs of items were so defined-memory for all items improved when 2 color groups were presented. In explaining performance, an account is advanced in which items compete for a fixed number of slots, but then memory recall for any given stored item is prone to error. A critical assumption is that items that share a common color are stored together in a slot as a chunk. The evidence provides further support for the idea that principles of perceptual organization may determine the manner in which items are stored in VSTM. (PsycINFO Database Record (c) 2012 APA, all rights reserved). 相似文献
194.
Dale R Duran ND Morehead JR 《Advances in cognitive psychology / University of Finance and Management in Warsaw》2012,8(2):196-209
Accounts of statistical learning, both implicit and explicit, often invoke predictive processes as central to learning, yet practically all experiments employ non-predictive measures during training. We argue that the common theoretical assumption of anticipation and prediction needs clearer, more direct evidence for it during learning. We offer a novel experimental context to explore prediction, and report results from a simple sequential learning task designed to promote predictive behaviors in participants as they responded to a short sequence of simple stimulus events. Predictive tendencies in participants were measured using their computer mouse, the trajectories of which served as a means of tapping into predictive behavior while participants were exposed to very short and simple sequences of events. A total of 143 participants were randomly assigned to stimulus sequences along a continuum of regularity. Analysis of computer-mouse trajectories revealed that (a) participants almost always anticipate events in some manner, (b) participants exhibit two stable patterns of behavior, either reacting to vs. predicting future events, (c) the extent to which participants predict relates to performance on a recall test, and (d) explicit reports of perceiving patterns in the brief sequence correlates with extent of prediction. We end with a discussion of implicit and explicit statistical learning and of the role prediction may play in both kinds of learning. 相似文献
195.
Dale Amir 《Psychology & health》2013,28(4):353-378
Abstract The research describes the range of preventive health behaviours undertaken by the elderly, investigates the dimensionality of preventive health behaviour, and explores the relationship between preventive health behaviour, self-assessed and medically assessed health status. Previous research has relied mainly on self-reports of health status. Data from medical examinations and interviews with 115 elderly individuals (aged 65–75) indicated that most elderly persons performed some intentional preventive health practices, as well as a broad range of normative preventive health practices. Particular clusters of preventive health behaviour emerged when the data were subjected to cluster analysis. A short index consisting of five personal preventive health behaviours found in other studies to have a protective effect on long-term health was found to have a low to moderate correlation with the medical and self-assessments of health status employed in the study. These findings indicate particular types of preventive health behaviour of importance for health promotion programmes with the elderly. 相似文献
196.
Barbara L. Pitts Paula Chapman Martin A. Safer Brian Unwin Charles Figley Dale W. Russell 《Military psychology》2013,25(6):537-544
Killing in combat uniquely predicts elevated PTSD symptomatology among military veterans. This study investigated the effects of combat killing in a sample of 345 U.S. Army combat medics who had recently returned from operational deployments to Iraq or Afghanistan. Combat medics provide frontline medical care before, during, and after battles but also fight alongside other soldiers when under attack. Attempting to kill in combat was a significant predictor of PTSD symptomatology even after accounting for passively witnessing trauma in fellow soldiers. Medics may be well prepared to cope with the passive experiencing and witnessing of war-zone trauma, but may benefit from training to cope with the negative consequences of taking actions to kill. 相似文献
197.
Extant word lists are typically based on word frequency counts from various types of literature (e.g., basal readers, content textbooks, trade books, adult reading material). The word list described in this study was constructed by determining what words are commonly known (i.e., recognized in their written form) by beginning readers. Almost 7,000 primary grade children were tested for basic sight recognition of 1,800 high frequency words. Using a 90 percent minimum criterion (i.e., 90 percent or more of the students at each grade level recognized each word), a 1,683‐word list was established that consisted of 587 first‐grade words, 861 second‐grade words, and 235 third‐grade words. Implications and uses of the extended basic sight vocabulary are also discussed. 相似文献
198.
Why have some researchers found reports of flashbulb memories to be stable, while others have observed inconsistencies? Paradoxically, it appears that relatively long delays between event and initial documentation have produced greater consistency of participants' reports. To investigate this directly, we collected the initial documentation of hearing about O.J. Simpson's acquittal either five hours or one week after the acquittal was read. Observed consistency of memories varied as a function of documentation time; following an eight-week retention, the delayed reports were more consistent. The delayed group also reported fewer propositions in their initial documentation. We proposed a consolidation model to explain these results: during the days immediately following a newsworthy event, the narrative structure of these memories changes in that some details are forgotten. After this consolidation period, the memories may solidify. Thus, it may have been easier for the delayed group to provide consistent memories at the two intervals. 相似文献
199.
Justin B. Leaf Kathleen H. Tsuji Amy E. Lentell Stephanie E. Dale Alyne Kassardjian Mitchell Taubman John McEachin Ronald Leaf Misty L. Oppenheim‐Leaf 《Behavioral Interventions》2013,28(1):82-106
Discrete trial teaching (DTT) is a systematic form of intervention commonly implemented with children and adolescents diagnosed with autism spectrum disorder. Experimenters and clinicians have implemented DTT in both one‐to‐one instructional formats and group instructional formats to teach a wide variety of skills to children and adolescents diagnosed with autism spectrum disorder. The purpose of this study was to compare DTT implemented in a one‐to‐one instructional format with DTT implemented in a group instructional format in order to determine which format was more effective, efficient, resulted in higher observational learning, and resulted in better maintenance when teaching a variety of expressive skills. The experimenters utilized a parallel treatment design, and the results indicated that both instructional formats were equally effective, there were mixed results in terms of maintenance and efficiency, and group instruction resulted in observational learning. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
200.
We examined the process of transition from being a practitioner in a field to becoming an educator in the same field, using repertory grid technique and a longitudinal methodology. A total intake of Technical and Further Education beginning teachers was followed throughout their 2-year preparation program. At five intervals, 6 months apart, repertory grids were administered to the group, with the elements supplied relating to various roles and aspects of the self relevant to transition. Constructs elicited from the group mapped the transition process during the 2-year period and showed the changing emphasis over the course. Measurements of self-esteem and the effect of the transition on family relationships were also administered. Results showed that the nature of the transition was generally positive. The constructs elicited identified change in the transition process as experienced by the group under study. Initially constructs were general and included satisfaction, striving, and participation. They then revealed greater concern with issues of time, control, personal and professional development, and, finally, those attributes of “being qualified.” Specifically, results show the transition process to be a personal experience, and illustrate the beneficial function of proceeding through the transition process as part of a group. 相似文献