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We hypothesized that older volunteers allocate more attentional resources to memory maintenance than do younger volunteers. Allocation of a resource supporting memory maintenance was inferred from performance and cardiovascular measures. Eighteen 18- to 26-year-old men and eighteen 60- to 79-year-old men performed a serial memory task both as a single task and as a dual task that added simple reaction time stimuli. Items presented early or later in the serial list created relatively low or high memory load. The results suggested that older men allocated greater attention to memory maintenance, particularly during high-memory-load items. They showed a slowing of dual-task reaction time and increased heart rate during high- vs. low-memory-load items. Cardiac and vascular reactions further suggested that memory maintenance is supported by phasic autonomic adjustments and that with age, more of this support is required for adequate maintenance of episodic memory. 相似文献
33.
This study suggests that sex stereotypes implicitly enacted, but never explicitly articulated, in TV commercials may inhibit women's achievement aspirations. Men and women (N=180) viewed locally produced replicas of four current, sex-stereotyped commercials, or four replicas that were identical except that the sex roles were reversed, or (control) named their favorite TV programs. All subjects then wrote an essay imagining their lives “10 years from now.” The essays were coded for achievement and homemaking themes. Women who viewed traditional commercials deemphasized achievement in favor of homemaking, compared to men and compared to women who had seen reversed role commercials. The reversed role commercials eliminated the sex difference in net achievement focus. Control subjects were indistinguishable from their same-sex counterparts in the traditional condition. The results identified some social changes needed to make “equality of opportunity” a social reality for women as well as men. 相似文献
34.
Blum's (1954) interpretation of psychoanalytic theory leads him to predict that Ss will defend against a threatening stimulus which is just below a recognition threshold and be vigilant toward the same stimulus when it is farther below the same threshold. 7 males and 9 females were presented the same four Blacky pictures, at the same speed and illumination, and using the same procedure as Blum. The results offered no support for the theory of perceptual vigilance or defense. The many weaknesses inherent in Blum's theory and supporting methodology were discussed. 相似文献
35.
Dolf Zillmann Jennings Bryant Joanne R. Cantor Kenneth D. Day 《Journal of research in personality》1975,9(4):282-293
Subjects were aggressively instigated by a provoker. They then performed either a nonstrenuous or a strenuous task in order to be placed in either a moderate or an extreme state of sympathetic arousal. Following the task, they either learned or did not learn about mitigating circumstances behind the provoker's behavior. This information was received prior to the provision of an opportunity to retaliate. Under conditions of moderate arousal, mitigating circumstances were found to reduce retaliation. In contrast, these circumstances failed to exert any appreciable effect on retaliation under conditions of extreme arousal. In addition, the induction of extreme arousal was observed to increase retaliatory behavior. The findings were considered to support a model of hostility and aggression that postulates a specific interdependency of cognitive and excitatory processes. 相似文献
36.
J. Richard Jennings Charles C. Wood Betsy E. Lawrence 《Attention, perception & psychophysics》1976,19(1):85-91
The inconsistency of previous results concerning the effects of alcohol on reaction time (RT) may be related to possible tradeoffs between speed and accuracy. In the present experiment, complete speed-accuracy tradeoff functions were generated for each of five doses of alcohol (0-1.33 ml/kg) in a choice RT task. Such functions permit RT differences resulting from changes in performance efficiency to be distinguished from those due to changes in subjects’ speed accuracy criteria. Increasing doses of alcohol produced a progressive decrease in the slope parameter of linear equations fit to the speed-accuracy data, but did not significantly alter the intercept of the functions with the RT axis. Thus, alcohol reduced performance efficiency by decreasing the rate of growth of accuracy per unit time. A change in speed-accuracy criterion was combined with the decrease in efficiency at the highest alcohol dose. 相似文献
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The hypothesis tested was that we attend to aspects of our interpersonal environment that correspond to prominent features of our own personality. One hundred fifty-four men and women rated the way in which they typically communicate and interact with significant other people (e.g., mother, father, lover) on 11 bipolar adjective scales and the way in which those other people interact with them. An individual differences multidimensional scaling analysis of interstimulus distances among the significant other people based on the ratings of the subject's interaction with those other people indicated that subjects who weighted a particular dimension tended to think they possessed a personality trait corresponding to the dimension. Reasons for the individual difference hypothesis were given. 相似文献
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