全文获取类型
收费全文 | 73313篇 |
免费 | 2796篇 |
国内免费 | 39篇 |
专业分类
76148篇 |
出版年
2020年 | 769篇 |
2019年 | 932篇 |
2018年 | 1296篇 |
2017年 | 1335篇 |
2016年 | 1425篇 |
2015年 | 984篇 |
2014年 | 1179篇 |
2013年 | 6038篇 |
2012年 | 2152篇 |
2011年 | 2326篇 |
2010年 | 1372篇 |
2009年 | 1403篇 |
2008年 | 2126篇 |
2007年 | 2030篇 |
2006年 | 1800篇 |
2005年 | 1664篇 |
2004年 | 1615篇 |
2003年 | 1519篇 |
2002年 | 1574篇 |
2001年 | 2247篇 |
2000年 | 2145篇 |
1999年 | 1630篇 |
1998年 | 866篇 |
1997年 | 761篇 |
1995年 | 683篇 |
1992年 | 1376篇 |
1991年 | 1316篇 |
1990年 | 1303篇 |
1989年 | 1221篇 |
1988年 | 1135篇 |
1987年 | 1139篇 |
1986年 | 1170篇 |
1985年 | 1242篇 |
1984年 | 1012篇 |
1983年 | 910篇 |
1982年 | 703篇 |
1981年 | 706篇 |
1979年 | 1026篇 |
1978年 | 769篇 |
1976年 | 691篇 |
1975年 | 932篇 |
1974年 | 1026篇 |
1973年 | 1009篇 |
1972年 | 903篇 |
1971年 | 813篇 |
1970年 | 759篇 |
1969年 | 768篇 |
1968年 | 980篇 |
1967年 | 941篇 |
1966年 | 862篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
This study examined the effects of two social cues on women's and men's self-confidence: the sex and performance of another in an achievement setting. Before trying to solve 60 anagrams, women expected to perform more poorly than men. In addition, both sexes expected to perform more poorly when paired with a male confederate than when paired with a female confederate. The effect of the partner's sex showed up in anagram performance: people with a female partner solved more anagrams than people with a male partner. The effect of subject's sex on performance was unexpected: women solved more anagrams than men. After the task, sex differences in self-confidence disappeared; neither sex of subject nor sex of partner influenced self-confidence. The partner's performance, however, had a strong effect on everyone: people were less self-confident if they had worked with a high-scoring partner. The pattern of results suggests that sex-of-subject differences in self-confidence, while important, are less powerful than the effects wielded by the sex of others in achievement settings. 相似文献
972.
David E. Sandberg Anke A. Ehrhardt Claude A. Mellins Susan E. Ince Heino F. L. Meyer-Bahlburg 《Sex roles》1987,16(11-12):649-668
The term pioneer is used for girls aspiring to male-dominated careers. This longitudinal study assesses the career choices of 68 middle-class girls during childhood (8–13 years, Phase I) and again during adolescence (13–18 years, Phase II), and investigates the relation between pioneering career choice and personal and family characteristics. Subjects were originally selected for exposure vs nonexposure to exogenous hormones during pregnancy. In childhood, pioneers were somewhat older, were more often persistent tomboys, had higher IQs, and had parents with higher educational attainment. In adolescence, paternal education was the only variable that showed the same relation to career choice. Adolescent girls who had wanted to get married at the time of the childhood assessment were now less likely to choose pioneering careers. Adolescent pioneers also had higher educational aspirations than nonpioneers and less likely anticipated being married within ten years than nonpioneers. A number of statistically borderline relationships were also observed: pioneers had somewhat fewer older brothers than nonpioneers, less often came from homes in which traditional femininity was stressed, and more frequently had mothers who had worked outside the home throughout their daughters' school years than mothers of nonpioneers. Prenatal exposure to exogenous sex hormones was not related to career choice during either childhood or adolescence. 相似文献
973.
974.
975.
Michael Lyvers B.A. Gayle Boyd Ph.D. Irving Maltzman Ph.D. 《Integrative psychological & behavioral science》1987,22(1):7-15
Effects of smoking on spontaneous bilateral skin conductance were studied as a consequence of interactions with set and setting. Bilateral skin conductance was recorded in six men and six women who smoked and an equal number of nonsmokers on two different days. On the first day, spontaneous electrodermal activity was recorded before and after a 10-minute rest period during which half the smokers smoked a cigarette. On the second day, one week later, spontaneous activity was again recorded before and after a 10-minute rest period during which the remaining smokers smoked a cigarette. Nonsmokers did not smoke at any time. Following smoking there was a significant negative correlation between a preference for visual over nonvisual imagery and spontaneous skin conductance responsivity in the left as compared to the right hand. Correlations were significantly different in smokers and nonsmokers. Smokers showed significantly greater preferences for either visual or nonvisual imagery than nonsmokers. Nonresponding nonsmokers were higher on the psychoticism (P) scale of the Eysenck Personality Questionnaire (EPQ) than responding nonsmokers. Smokers scored higher on P than nonsmokers. Interactions between personality, cognitive style, and the experimental situation, set, and setting were discussed in relation to the arousing effects of nicotine. 相似文献
976.
977.
S Hesse-Biber A Clayton-Matthews J A Downey 《Genetic, social, and general psychology monographs》1987,113(4):509-528
Among a sample of American college students, body image and the degree of desired weight change were associated with academic self-rankings, with social and psychological well-being, and with the development of eating difficulties. The effects of body image and desired weight change on eating disorders were generally found to be greater for women than for men, and their effects on student self-rankings of academic ability, social, and psychological traits were more pervasive for women than for men. The less attractive a woman perceived herself to be and the more weight she wanted to lose, the greater was her overall sense of academic, social, and psychological impairment. Women who had poor body images and who desired to lose weight were more likely to report eating difficulties. 相似文献
978.
A questionnaire monitoring occupational aspiration, ethnic identification, adolescent experience, and self-esteem was administered to a large sample of Indian and Anglo-Saxon British male and female adolescents attending school in the West Midlands. The relationship between these variables and differences between the four groups were consistent with predictions derived from the social identity approach to intergroup relations and group behaviour (Tajfel & Turner, 1979). Indian males were found to possess a social mobility belief structure that mediates high occupational aspirations and keeness to marry out of their ethnic group. In contrast, Indian females were found to possess a social change belief structure associated with acceptance of the status quo and lower aspirations. Males and Anglo-Saxons reported higher self-esteem than females or Indians. The adolescent experience findings were less clear, but were consistent with the general interpretation of the data that the differences in intersex relations and gender-related experiences are contingent on ethnicity. 相似文献
979.
Miguel A. García-Pérez 《Behavior research methods》1987,19(1):42-46
In this paper, we present a BASIC program for Apple II series computers that allows the user to obtain perspective drawings of two-dimensional functions of known analytical expression. Also, we outline a procedure for obtaining perspective representations of two-dimensional arrays of data using the same program. The program should run on any computer with graphics mode with only slight modifications in the graphics commands. 相似文献
980.
A suite of programs is described for simulating the Rescorla-Wagner (1972) model of associative learning, the Solomon and Corbit (1974) opponent-process theory, and Schull’s (1979) extension of the latter. The programs are written for the Commodore 64 computer. 相似文献