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191.
In 2 experiments, participants were presented schematic faces with emotional expressions (threatening, friendly) in a neutral-faces context or neutral expressions in an emotional-faces context. These conditions were compared with detection performance in displays containing key features of emotional faces not forming the perceptual gestalt of a face. Supporting the notion of a threat detection advantage, Experiment 1 found that threatening faces were faster detected than friendly faces, whereas no difference emerged between the corresponding feature conditions. Experiment 2 increased task difficulty with a backward masking procedure and found corresponding results. In neither of the studies was the threat detection advantage associated with reduced accuracy. However, features were, in general, detected faster than faces when task difficulty was high. 相似文献
192.
Drawing on the mood-behavior model (G. H. E. Gendolla, 2000), 2 experiments examined moods' informational impact on effort-related cardiovascular response. After being induced into positive versus negative moods, participants performed a memory task (Experiment 1) or a letter-cancellation task (Experiment 2). Half the participants received a cue that their mood could have been manipulated. As expected, both studies found stronger reactivity of systolic blood pressure in a negative mood than in a positive mood when no cue was provided. This effect diminished in the cue conditions. Additionally, achievement corresponded to systolic blood pressure reactivity (Experiment 1), the cue manipulation had no effect on mood, and mood had a congruency effect on subjective task difficulty in the no-cue conditions (Experiment 2). 相似文献
193.
Messé LA Hertel G Kerr NL Lount RB Park ES 《Journal of personality and social psychology》2002,82(6):935-946
O. K?hler (1926, 1927) found that less able performers tried harder as team members under conjunctive task demands (Kohler motivation gain effect) and that the greatest gain occurred with moderately discrepant coworker abilities (K?hler discrepancy effect). Recent investigations have reproduced K?hler's overall motivation gain but not the discrepancy effect. The present research examined whether workers' foreknowledge of task abilities--present in Kohler's research, absent in contemporary studies--moderates the discrepancy effect. Participants worked alone or in 2-person teams under conjunctive task demands. Experiment 1 manipulated foreknowledge of ability. Experiment 2 manipulated discrepancy: a (confederate) teammate performed slightly, moderately, or substantially better. Both experiments found (a) overall motivation gains and (b) discrepancy moderation under foreknowledge conditions. Implications for understanding group motivation gains are discussed. 相似文献
194.
Drawing on the mood-behavior model (G. H. E. Gendolla, 2000) and J. W. Brehm and E. A. Self's (1989) theory of effort mobilization, 2 experiments investigated the joint effect of mood, task difficulty, and performance-contingent consequences on effort-related cardiovascular response. Informational mood impact on demand appraisals and performance-contingent consequences had a joint effect on effort mobilization. When consequences were noncontingent on performance, mood interacted with task difficulty to determine cardiovascular reactivity in the shape of a cross-over interaction pattern. Yet when positive consequences were performance contingent, cardiovascular reactivity strongly increased only in the negative-mood/difficult-task condition--the subjectively appraised high necessary effort was now justified. Implications for the role of mood in motivation are discussed. 相似文献
195.
Peeters G 《Genetic, social, and general psychology monographs》2005,131(3):251-276
In 3 studies and 2 pilot experiments, the author examined whether attending to the subjective status of mental representations would affect the ways humans view representational contents. The author found that simple drawing tasks were executed differently depending on whether or not the subject of the drawing was defined as a mental content (belief, imagination, perception). The results challenged particular lay epistemological concepts. They were partly accounted for by Gricean conversational rules (H. P. Grice, 1975), but the author postulated a subjective status bias to fully explain them. The discussion and recommendations for research center on the nature of this bias and relate it either to a tendency to conceive subjective representations as vague shadows of reality, or to an increased impact of the law of pregnance. 相似文献
196.
This study investigated how the speed-accuracy balance is modulated by changes in the time course of motor activation and
inhibition of a primed response. Responses and event-related brain potentials were recorded in a paradigm in which the first
stimulus indicated the correct response with 80% validity. The remaining 20% of the trials required no response (no-go) or
a response opposite to the cued hand (change trials). Subjects were instructed either to balance speed and accuracy or to
emphasize speed at the cost of accuracy. Analyses of error patterns, reaction time distributions and brain potentials show
that subjects can modulate the amount of activation of the primed response. More surprisingly, the engagement of inhibition
of the response also varied with the speed-accuracy instruction. The results are consistent with a model where the frontothalamic
loop actively controls both the activation and the inhibition of responses, depending on the current task requirements.
This study was supported by the Netherlands Organization of Scientific Research (NWO) grant numbers 575-63-082 and 575-25-004.
The work of Dr. Band and Dr. Ridderinkhof was supported by grants from the Royal Netherlands Academy of Arts and Sciences 相似文献
197.
Disorders of classificatory activity in aphasia 总被引:1,自引:0,他引:1
Guido Gainotti Sergio Carlomagno Angela Craca Maria Caterina Silveri 《Brain and language》1986,28(2):181-195
Two nonverbal tasks of classificatory activity ("class inclusion" and "class intersection") were administered to 46 aphasics, 28 normal controls, 19 nonaphasic left-brain-damaged and 17 right-hemisphere-damaged patients in order to study if aphasic patients are more impaired than nonaphasic brain-damaged patients on these two tasks of elementary logic and if a relationship exists within the aphasic patients between inability to perform the tasks of classifiactory activity and impairment of the semantic-lexical level of integration of language. Results were for the most part in line with expectations because aphasics scored worse than normal controls and nonaphasic brain-damaged patients (even if the difference reached the level of statistical significance only on the test of "class intersection") and within the aphasic patients the worst results were obtained by subjects presenting clear signs of semantic-lexical disintegration. 相似文献
198.
Samuel F. Sears Jr. James R. Rodrigue Brian C. Sirois Guido G. Urizar Michael G. Perri 《Journal of clinical psychology in medical settings》1999,6(3):303-316
Multidisciplinary pre-cardiac transplantation evaluations determine an individual's ability to benefit from potential transplantation. Psychologists are routinely consulted to perform psychological evaluations and testing to examine the candidate's current functioning and to forecast future functioning in the event of transplantation. The establishment of appropriate norms for psychological tests is an ethical imperative to provide high quality psychological consultations that maximize the utility of information gathered. The purpose of this paper is to present pre-cardiac transplant norms for a battery of psychological tests in a large population of consecutive transplant candidates. Together with other recently published norms on alternative test batteries, these norms allow the transplant psychologist to select from a range of psychological tests that span multiple domains of critical importance including the affective, behavioral, coping, cognitive, and health related quality of life domains. These norms appear to set a standard of practice for the use of psychological tests by a consulting transplantation psychologist. 相似文献
199.
200.
Guido Peeters 《European journal of social psychology》1976,6(2):191-205
Three schemata relevant to the inference of traits attributed to a and b from respectively reciprocal liking and disliking relations between a and b are derived from the research literature: (a) Homogeneity according to which likable traits would be attributed to a and b if they like each other, while dislikable traits if they dislike each other; (b) balance according to which more similarity would be attributed to a and b if they like each other than if they dislike each other, the relative similarity effect being localized on a likableness dimension; (c) positivity bias according to which favorable traits would be attributed irrespective of the stimulus information given. An experiment is reported which provides support for the three schemata with the exception that no unequivocal evidence is obtained for the restriction of the balance effect to a likableness dimension. Further, individual Ss are found not to have stable preferences for particular schemata but to switch readily from one schema to the other. 相似文献