首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   517篇
  免费   3篇
  520篇
  2023年   7篇
  2022年   5篇
  2021年   5篇
  2020年   6篇
  2019年   13篇
  2018年   17篇
  2017年   14篇
  2016年   18篇
  2015年   12篇
  2014年   12篇
  2013年   58篇
  2012年   21篇
  2011年   16篇
  2010年   12篇
  2009年   6篇
  2008年   17篇
  2007年   12篇
  2006年   23篇
  2005年   8篇
  2004年   16篇
  2003年   13篇
  2002年   20篇
  2001年   4篇
  2000年   5篇
  1999年   3篇
  1998年   5篇
  1997年   9篇
  1996年   10篇
  1995年   7篇
  1994年   7篇
  1993年   4篇
  1992年   8篇
  1991年   9篇
  1990年   6篇
  1989年   4篇
  1988年   4篇
  1987年   8篇
  1986年   5篇
  1985年   4篇
  1984年   10篇
  1983年   9篇
  1982年   6篇
  1981年   7篇
  1980年   6篇
  1978年   3篇
  1977年   7篇
  1976年   12篇
  1975年   6篇
  1971年   2篇
  1965年   3篇
排序方式: 共有520条查询结果,搜索用时 0 毫秒
441.
Previous research has shown that we recognize faces similar in age to ourselves better than older or younger faces (e.g., Wright & Stroud, 2002). This study investigated whether this own-age bias could be explained by the contact hypothesis used to account for the own-race bias (see Meissner & Brigham, 2001). If the own-age bias stems from increased exposure to people of our own age, it should be reduced or absent in those with higher exposure to other age groups. Participants were asked to remember facial photographs of 8- to 11- and 20- to 25-year-olds. Undergraduates were faster and more accurate at recognizing faces of their own age. However, trainee teachers showed no such own-age bias; they recognized the children’s faces more quickly than own-age faces and with comparable accuracy. These results support a contact-based explanation of the own-age bias.  相似文献   
442.
Alternative hypotheses generated from the Atkinson (1957) and Atkinson and Feather (1966) risk-taking model of achievement motivation and the Atkinson and Birch (1970) dynamics of action theory comparing groups high and low in resultant achievement motivation (RAM) on latency to and persistence at an achievement task were tested. Subjects who had made two or more atypical shifts (choice of an easier task following success and choice of a more difficult task following failure) during 21 trials of a target-shooting game the first week were classified as low RAM (n=154), and subjects who had made 0 or 1 atypical shift were classified as high RAM (n=155). In week 2 subjects divided their time among two nonachievement tasks and the very easy, easy, intermediate, difficult, or most difficult levels of the achievement task. No main effects or interactions were found when latency to the achievement task was analyzed in a RAM by Difficulty level × Gender individual difference design. High-RAM subjects persisted significantly longer than low-RAM subjects across all conditions. Results are explained using the dynamic concepts of instigation, inhibition, and consummation. Analyses of sequential choices (week 1) among five difficulty levels did not support the Atkinson (1957) explanation of atypical shifts as avoidance of intermediate challenges for low-RAM subjects. Subjects who avoided the target-shooting game the second week more often persisted at the very easy task following success but not at the most difficult task following failure, results that are partially supportive of Feather's (1961) analysis of persistence.I wish to thank Dr. David Reuman, who suggested the research topic; the 24 undergraduate research assistants who ran subjects for this experiment; Rochelle Breitenbach, Laurie Colisanti, Kevin Kurkowski, Lee Ann McHenry, and Brenda Yee, who assisted with the data preparation and analyses; Ann Beck and Randi Gilbert, who provided editorial assistance; and Dr. Tilly Houtmans, who commented on an earlier version of this paper. A paper based on the dynamics of action research was presented at the Nags Head Conference on Motivation and Emotion on June 17, 1990. A paper based on the level of aspiration/achievement motivation results was presented at the Third International Meeting of the Society for the Advancement of Field Theory on September 16, 1988. A copy of the BASIC program for the Apple IIe computer is available to anyone who sends a 5 1/4-inch diskette.  相似文献   
443.
Turner syndrome (TS) is a genetic disorder in females characterized by the complete or partial absence of one X chromosome. Its most consistent physical features include short stature and ovarian dysgenesis. TS individuals demonstrate a characteristic neurocognitive profile involving weaknesses in visuospatial processing. The hypothesis of defective right hemisphere specialization has been offered to explain the visuospatial deficits in TS. In contrast, an alternative explanation proposes a more uniform dysfunction of the left and right hemispheres, based on findings of symmetrical abnormalities. This article presents an overview of the two hypotheses, along with relevant findings on hemispheric specialization with respect to TS. The impact of the genetic and hormonal mechanisms on the neurocognitive profile of TS is also discussed and directions for further empirical research are identified.  相似文献   
444.
Age-normed tests of Listening Comprehension, Oral Expression, Reading Comprehension, and Written Expression were administered in grades 1 (n=128), 3, and 5 or 3 (n=113), 5, and 7. Confirmatory factor analyses compared one- and four- factor models at each grade level and supported a four- factor model of Language by Ear, Mouth, Eye, and Hand. Multiple regressions identified which of the three other language skills explained unique variance in each of the four language skill outcomes and provided additional evidence that language is not a single skill. Individuals' ipsative scores (amount that the standard score for age on each language measure deviated from individual's mean for all four measures) showed that 25% to 30% of individuals showed relative strengths or weaknesses (+ or - 1 SD) in specific language skills, but only 7% were stable across grades 3 and 5. Findings are discussed in reference to (a) theoretical implications for idea comprehension and expression via language by ear, mouth, eye, and hand, and (b) educational applications of observed developmental and individual differences for general, special, and gifted education.  相似文献   
445.
We investigated interactions between positive affect and personality (empathy and altruism) as predictors of workplace helping. We conducted an experience sampling study with 80 participants, each of whom completed personality instruments and responded to a maximum of 5 electronic surveys per day for 5 workdays. This approach allowed us to study relationships over time between momentary positive affect and workplace helping behavior. We found that affect's relationship with later helping depended on the personality trait of altruism. We also found evidence that the relationship was reciprocal—helping others lead to increased positive affect, but again the relationship depended on altruism.  相似文献   
446.
The current study examined awareness of gender and ethnic bias and gender and ethnic identity in 350 African American, White/European American, and Latino/Hispanic students (Mage = 11.21 years, SD = 1.59) from the 4th, 6th, and 8th grades of diverse middle and elementary schools. The study collected (a) qualitative data to best capture the types of bias that were most salient to children and (b) daily diaries and individual measures to examine the multiple components of children's gender and ethnic identities. Results revealed ethnic, gender, and grade-level differences in awareness of ethnic and gender bias. Overall, more children were aware of gender bias than ethnic bias. This effect was most pronounced among White/European American youths. Among those in 4th grade, African American and Latino youths were more likely to be aware of ethnic bias than were White/European American youths. Analyses also examined how awareness of bias was related to gender and ethnic identity. For example, children who had a salient and important gender identity, and a devalued ethnic identity, were less likely than other children to be aware of ethnic bias.  相似文献   
447.
448.
Observers judged whether a periodically moving visual display (point-light walker) had the same temporal frequency as a series of auditory beeps that in some cases coincided with the apparent footsteps of the walker. Performance in this multisensory judgment was consistently better for upright point-light walkers than for inverted point-light walkers or scrambled control stimuli, even though the temporal information was the same in the three types of stimuli. The advantage with upright walkers disappeared when the visual "footsteps" were not phase-locked with the auditory events (and instead offset by 50% of the gait cycle). This finding indicates there was some specificity to the naturally experienced multisensory relation, and that temporal perception was not simply better for upright walkers per se. These experiments indicate that the gestalt of visual stimuli can substantially affect multisensory judgments, even in the context of a temporal task (for which audition is often considered dominant). This effect appears to be constrained by the ecological validity of the particular pairings.  相似文献   
449.
People are quick to perceive meaningful patterns in the co-occurrence of events. We report two studies exploring the effects of streaks in symptom checklists on perceived personal disease risk. In the context of these studies, a streak is a sequence of consecutive items on a list that share the characteristic of being either general or specific. We identify a psychological mechanism underlying the effect of streaks in a list of symptoms and show that the effect of streaks on perceived risk varies with the length of the symptom list. Our findings reveal a tendency to infer meaning from streaks in medical and health decision making. Participants perceived a higher personal risk of having an illness when presented with a checklist in which common symptoms were grouped together than when presented with a checklist in which these same symptoms were separated by rare symptoms. This research demonstrates that something as arbitrary as the order in which symptoms are presented in a checklist can affect perceived risk of disease.  相似文献   
450.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号