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81.
Charles W. Turner Lynn Stanley Simons Leonard Berkowitz Ann Frodi 《Aggressive behavior》1977,3(4):355-378
Evidence is presented suggesting that firearms violence is an important social problem. Research strongly suggests that the effectiveness of firearms as a cause of death and injury may be due to their widespread availability, their lethality, and the impulsivity of their use. The investigation of a possible causal link between firearms and impulsive aggression led to Berkowitz and LePage's (1967) weapons effect experiment. The results suggested that weapons can increase the instigation to aggression in aroused an uninhibited individuals. The researchers reasoned that weapons might stimulate aggression by classical conditioning processes resulting from learned associations between aggressive acts and weapons. Although a few studies have failed to reproduce an aggression-enhancing effect of weapons, the original finding has been replicated in several countries with diverse subject groups both in field and laboratory settings. However, these studies also indicate that many individuals may react with anxiety or fear in the presence of weapons and inhibit aggressive reactions. Manipulations of evaluation apprehension, subject suspiciousness, and/or hypothesis awareness about the purpose of the weapons in the experiments all seem to lead to reduced levels of aggressive response in the presence of weapons. These findings offer a possible explanation for the few failures to replicate the original weapons effect; if researchers used apprehensive subjects or subjects who were aware of possible experimental deceptions, they were more likely to observe an inhibitory reaction rather than an aggression-enhancing effect of weapons. 相似文献
82.
This study tested whether quantity and quality of social support and two sources of work stress (organizational stressors and job risk) predicted work strain in police officers, a high-risk occupational group. The participants were 135 police officers from a large metropolitan law enforcement agency who responded to questionnaires for assessing work stress, social support, exhaustion, and other strain symptoms. Emotional support and work stressors accounted directly for significant variance in emotional exhaustion, depersonalization, and symptom frequency. Conflicted relationships, which are a source of both work stress and support, also contributed to strain. In contrast to previous findings, a reverse buffering effect for social support did not contribute to predicting strain. Stress management programs for police and other high-stress occupations should target increasing emotional support from supervisors and peers, and reducing conflict in job and family relationships. 相似文献
83.
Self-regulation and Computer-aided Instruction 总被引:1,自引:0,他引:1
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With each eye fixation, we experience a richly detailed visual world. Yet recent work on visual integration and change direction reveals that we are surprisingly unaware of the details of our environment from one view to the next: we often do not detect large changes to objects and scenes ('change blindness'). Furthermore, without attention, we may not even perceive objects ('inattentional blindness'). Taken together, these findings suggest that we perceive and remember only those objects and details that receive focused attention. In this paper, we briefly review and discuss evidence for these cognitive forms of 'blindness'. We then present a new study that builds on classic studies of divided visual attention to examine inattentional blindness for complex objects and events in dynamic scenes. Our results suggest that the likelihood of noticing an unexpected object depends on the similarity of that object to other objects in the display and on how difficult the priming monitoring task is. Interestingly, spatial proximity of the critical unattended object to attended locations does not appear to affect detection, suggesting that observers attend to objects and events, not spatial positions. We discuss the implications of these results for visual representations and awareness of our visual environment. 相似文献
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The influence of expertise on X-ray image processing 总被引:4,自引:0,他引:4
M Myles-Worsley W A Johnston M A Simons 《Journal of experimental psychology. Learning, memory, and cognition》1988,14(3):553-557
Observers with four different levels of radiological experience performed a recognition memory task on slides of faces and chest X-ray films. Half of the X-ray films revealed clinically significant abnormalities and half did not. Recognition memory for faces was uniformly high across all levels of radiological experience. Memory for abnormal X-ray films increased with radiological experience and, for the most experienced radiologists, was equivalent to memory for faces. Surprisingly, recognition memory for normal films actually decreased with radiological experience from above chance to a chance level. These results indicate that radiological expertise is associated with selective processing of clinically relevant abnormalities in X-ray images. Expert radiologists appear to process X-ray images the way that we all process faces, by quickly detecting and devoting processing resources to features that distinguish one stimulus from another. However, the selective processing of X-ray films appears to be restricted to clinically relevant abnormalities. As they develop the ability to detect these abnormalities, radiologists appear to lose the ability to detect variations in normal features. 相似文献
88.
Peter Simons 《Synthese》2006,150(3):443-458
I consider the idea of a propositional logic of location based on the following semantic framework, derived from ideas of
Prior. We have a collection L of locations and a collection S of statements such that a statement may be evaluated for truth at each location. Typically one and the same statement may
be true at one location and false at another. Given this semantic framework we may proceed in two ways: introducing names
for locations, predicates for the relations among them and an “at” preposition to express the value of statements at locations;
or introduce statement operators which do not name locations but whose truth-conditional effect depends on the truth or falsity
of embedded statements at various locations. The latter is akin to Prior’s approach to tense logic. In any logic of location
there will be some basic operators which we can define. By ringing the changes on the topology of locations, different logical
systems may be generated, and the challenge for the logician is then in each case to find operators, axioms and rules yielding
a proof theory adequate to the semantics. The generality of the approach is illustrated with familiar and not so familiar
examples from modal, tense and place logic, mathematics, and even the logic of games.
相似文献
89.
Joke Bruinsma-de Beer 《Pastoral Psychology》2006,55(2):167-174
In this article the author discusses the differences between pastoral care and psycho-social therapy. She clarifies the specific identity of pastoral care on the basis of Henning Luther’s theology. He distinguishes different anthropological presuppositions in pastoral care and psycho-social therapy. Consequently, she demonstrates the relevancy of Luther’s theology for today’s Practical Theology.
相似文献
Joke Bruinsma-de BeerEmail: |
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