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141.
What can we learn about a scene while we stare at it, but before we know what we will be looking for? Three experiments were performed to investigate whether previewing a search array prior to knowing the target allows search to operate more quickly (lower reaction time [RT]), more efficiently (reduced set size slope), and/or by consulting abstract mental representations. Experiment 1 compared RTs for previewed and nonpreviewed arrays, some of which were highly degraded with visual noise. Preview reduced RTs for the noisy displays but did not affect search efficiency. Limited interactions of visual quality and preview suggested that prior exposure allowed the extraction and maintenance of about three abstract identities. If the target was one of those items, the observer responded without searching; if not, the observer searched the remaining items as if there had been no preview. Experiment 2 replicated these findings with less extreme noise. In Experiment 3, subjects previewed 0-6 items of a 12-item display. RTs decreased linearly as the number of previewed items increased from 0 to 3 and then reached a plateau, confirming that the capacity of the representation was about 3 items. Implications for visual awareness are discussed.  相似文献   
142.
A meta-analysis examined data from 36 studies linking physical activity to well-being in older adults without clinical disorders. The weighted mean-change effect size for treatment groups (d(C). = 0.24) was almost 3 times the mean for control groups (d(C). = 0.09). Aerobic training was most beneficial (d(C). = 0.29), and moderate intensity activity was the most beneficial activity level (d(C). = 0.34). Longer exercise duration was less beneficial for several types of well-being, though findings are inconclusive. Physical activity had the strongest effects on self-efficacy (d(C).= 0.38), and improvements in cardiovascular status, strength, and functional capacity were linked to well-being improvement overall. Social-cognitive theory is used to explain the effect of physical activity on well-being.  相似文献   
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Smith  Cynthia J.  Noll  Jane A.  Bryant  Judith Becker 《Sex roles》1999,40(5-6):499-512
In this study we re-examine the role of genderwithin the self-concept and challenge the assumptionthat our gender self-concept is static and consistentacross contexts. We used the Bem Sex Role Inventory (BSRI) to measure masculinity and femininityacross six contexts. These six contexts were interactingwith same sex friends, interacting with other sexfriends, interacting at home, work, and school, and interacting in a social context where one doesnot know many people. Two hundred twenty-three femalesand 52 males from a large public university in theSoutheast participated in the study. A majority of the participants (76%) were Caucasian with 10%being Hispanic, 4% Asian, and 4% African American.Multivariate analyses of variance provided strongevidence for differences across contexts for both males and females. The results indicated that we aredynamic beings and those characteristics associated withgender are dynamic as well.  相似文献   
145.
Two experiments were conducted to study selective memory bias favoring anxiety-relevant materials in patients with anxiety disorders. In the 1st experiment, 32 patients with generalized anxiety disorder (GAD), 30 with social phobia (speaking anxiety), and 31 control participants incidentally learned GAD-relevant words, speech anxiety-relevant words, strongly pleasant words, and words with a neutral valence. Participants did not show any explicit memory bias for threatening materials. Thirty patients suffering from panic disorder (PD) with agoraphobia and 30 controls took part in the 2nd experiment. The design was similar to the 1st experiment. This time a highly specific selective memory bias for threatening words was found. Words describing symptoms of anxiety were better recalled by PD patients. Results are consistent with previous findings but are inexplicable by existing theories.  相似文献   
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There is both judgment and grace in the aging process. The resources of Christian theology can be utilized to make aging more of a blessing than a curse. Judgment in aging is experienced as the judgment of time—little time left, loss of opportunity either to complete projects or to amend what has not been done well. The sins of the elderly are largely reactive rather than proactive The shape of guilt for the elders easily takes the form of fear of rejection and ultimate despair rather than longing for restoration and hope of forgiveness because of the cultural climate in which we are aging. To overcome this pastoral care management of resources of hope, acceptance and forgiveness are curcially important in ministry to the elders.Professor Becker is Professor of Pastoral Care at the Lutheran Theological Seminary, 2199 East Main Street, Columbus, Ohio, 43209. His article is based on a lecture presented at the American Lutheran Church Synposium on Aging, Ann Arbor, Michigan, September, 1977, entitled Theological Perspectives on Aging.  相似文献   
148.
In two experiments subjects were shown seven items that described uses for photographs taken of them with an opposite-sex black. The uses formed a graded series ranging from a situation in which only other researchers would see the photos to one in which they would be employed in a nationwide campaign for integration. Subjects were either asked to sign releases so that the photographs could actually be taken and used in the ways specified (behavior) or to indicate their hypothetical agreement or disagreement with each release as part of a survey on attitudes (attitude). In both experiments, the attitude subjects agreed to more of the releases than did the behavior subjects. This difference has been termed an attitude-behavior discrepancy by some researchers. However, in both experiments, behavior subjects judged themselves as no less prejudiced than attitude subjects and scaled agreement with each photographic release as reflecting less prejudice than did attitude subjects. These data are consistent with the interpretation that subjects changed their psychological perspectives (Ostrom & Upshaw, 1968) in order to interpret their own behaviors as attitudinally consistent.  相似文献   
149.
Undergraduate students (60 males, 60 females) viewed a sexually explicit movie in which a couple engaged in intercourse. Different themes were introduced by prefacing the film with information varying the filmed couple's apparent marital status (single, married) and contraceptive practices (no information, no contraception, contraception via the pill). After viewing the movie, subjects filled out a questionnaire assessing their own affective reactions plus their perceptions and evaluations of the couple. Male subjects reported the greatest positive affect when the film couple was described as single and using contraception, but they also perceived the stimulus couple as caring the least for one another when they were using contraceptives. In contrast, females perceived contraceptive use as positive evidence of mutual caring. These sex differences in reacting to contraceptive use were discussed in terms of the relatively greater tendency of males to separate love and sex than is true for females.Work on this experiment was supported by a research grant (SOC 74-15254) from the National Science Foundation. The authors wish to thank Elizabeth Rice Allgeier, William A. Fisher, and Richard Knox for their comments and suggestions.  相似文献   
150.
Somewhat surprisingly, previous research has failed to demonstrate what was thought to be an intuitively obvious negative relationship between aggression and attraction toward the victim of aggression. It was proposed that powerful instigation procedures in past research had served to obscure the effects of attraction on aggression. It was therefore hypothesized that aggression toward a stranger occurs as an inverse function of attitudinally induced attraction toward that stranger only when instigation strength is low. Male subjects (N=60) responding on the Buss aggression apparatus were exposed to a similar or dissimilar victim and to one of three levels of instigation: no instigation, a moderately aggressive model, or insulting evaluations. The hypothesized interaction between similarity and strength of instigation was confirmed for shock intensity (p<.02). For shock duration, main effects were found for both similarity (p<.02) and strength of instigation (p<.02). It was concluded that relatively negative feelings about another individual increase the probability of aggressing against him, but that such feelings do not constitute a necessary or sufficient condition for that aggression.This research was supported in part by Research Grant GS-40329 from the National Science Foundation. The authors wish to thank Dr. Don A. Nelson and Dr. Robert A. Baron for their aid in this experiment.  相似文献   
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