全文获取类型
收费全文 | 64290篇 |
免费 | 1133篇 |
国内免费 | 3篇 |
专业分类
65426篇 |
出版年
2020年 | 787篇 |
2019年 | 933篇 |
2018年 | 1272篇 |
2017年 | 1326篇 |
2016年 | 1372篇 |
2015年 | 1017篇 |
2014年 | 1220篇 |
2013年 | 5665篇 |
2012年 | 2183篇 |
2011年 | 2202篇 |
2010年 | 1334篇 |
2009年 | 1378篇 |
2008年 | 1924篇 |
2007年 | 1883篇 |
2006年 | 1731篇 |
2005年 | 1469篇 |
2004年 | 1506篇 |
2003年 | 1434篇 |
2002年 | 1367篇 |
2001年 | 2038篇 |
2000年 | 1901篇 |
1999年 | 1456篇 |
1998年 | 740篇 |
1997年 | 616篇 |
1996年 | 677篇 |
1995年 | 638篇 |
1994年 | 609篇 |
1993年 | 590篇 |
1992年 | 1161篇 |
1991年 | 1085篇 |
1990年 | 1047篇 |
1989年 | 1025篇 |
1988年 | 989篇 |
1987年 | 916篇 |
1986年 | 910篇 |
1985年 | 979篇 |
1984年 | 801篇 |
1983年 | 689篇 |
1982年 | 537篇 |
1979年 | 795篇 |
1978年 | 630篇 |
1976年 | 530篇 |
1975年 | 654篇 |
1974年 | 738篇 |
1973年 | 742篇 |
1972年 | 644篇 |
1971年 | 597篇 |
1968年 | 639篇 |
1967年 | 563篇 |
1966年 | 544篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
The purpose of the present study was to determine whether the sex role orientations of male and female collegiate athletes were more similar in team sports than in individual sports. It was predicted that females in masculine-oriented team sports (basketball and volleyball) would exhibit sex role orientations more similar to those of their male counterparts than would females in individual sports (track/field and swimming). To test this notion the S. L. Bem (The Measurement of Psychological Androgyny, Journal of Consulting and Clinical Psychology, 1974, 42, 155–167) Sex Role Inventory was administered to 381 athletes from 37 National Collegiate Athletic Association institutions. The median-split procedure (S. L. Bem, On the Utility of Alternative Procedures for Assessing Psychology Androgyny, Journal of Consulting and Clinical Psychology, 1977, 45, 196–205) was used to classify subjects as masculine, feminine, androgynous, or undifferentiated. Separate Gender × Sex Role Orientation chi square tests were performed on the frequency data of team and individual sport athletes. The results indicated no significant differences in the sex role orientations of male and female team sport performers, with the greatest proportion (66%) having a masculine (33%) or androgynous (33%) orientation. For individual sports there was a significant difference in the sex role orientations of males and females. The highest proportion of females were classified as feminine (37%) and the lowest proportion were classified as masculine (11%). Individual sport males were somewhat evenly distributed among the four sex role orientation categories, with the highest proportion classified as undifferentiated (36%). It was concluded that sex role orientation of elite female athletes may be associated with the male appropriateness of the sport in which they participate. 相似文献
52.
Hindsight bias was studied in the context of the accident in the Chernobyl nuclear power plant, which took place on April 26th 1986. An individual difference factor which relates to the motivation to process information, need for cognition, was expected to moderate the occurrence of hindsight bias. Probability estimates of many casualties due to the use of nuclear power in The Netherlands were obtained from 212 individuals two months before the accident in Chernobyl. These estimates were compared with similar estimates made in hindsight by the same individuals five months after the accident. Loglinear Analyses reveal a systematic hindsight bias. However, the direction of the bias was contrary to expectations. In hindsight, individuals gave lower probabilities than they actually did two months before the Chernobyl accident. These results reveal a reverse hindsight bias. As hypothesized, need for cognition moderates hindsight bias: individuals low and medium in need for cognition express a systematic reverse hindsight bias, while individuals high in need for cognition do not. High need for cognition individuals also show higher literal consistency between the two measurements, which supports a memory explanation of the moderating effect of need for cognition. 相似文献
53.
LAURA M. PURDY 《希帕蒂亚:女权主义哲学杂志》1988,3(2):49-62
Shulamith Firestone argues that for women to embrace equal rights without recognizing them for children is unjust. Protection of children is merely repressive control: they are infantilized by our treatment of them. I maintain that many children no longer get much protection, but neither are they being provided with an environment conducive to learning prudence or morality. Recognizing equal rights for children is likely to worsen this situation, not make it better. 相似文献
54.
The authors discuss the results of a study designed to assess nationally certified counselors' perceptions of the relevance of elements of the National Board for Certified Counselors examination to their work as counselors. Support for the validity and appropriateness of the examination in regard to perceived relevance and lack of differentiation on the basis of respondent characteristics were found. 相似文献
55.
56.
57.
Younger (24- to 39-year-old) and older (60- to 88-year-old) adults learned a list of vocabulary words; one half of the words were studied using a generally more powerful strategy (mnemonic keyword method), and one half mediated with a less powerful approach (generating semantic contexts). Before using these strategies as part of the experiment, neither younger nor older adults judged that the keyword method was more effective and neither group preferred one strategy over the other. After using the strategies and taking a test of strategically studied unfamiliar vocabulary words, the younger subjects reported accurately the relative effectiveness of the two strategies and selected the one that had worked better for them to apply to a subsequent list of vocabulary items. The older participants were not as aware of the differential potency of the strategies and did not rely as much as did the younger subjects on knowledge of strategy utility in making strategy choices. In short, metacognitive awareness of strategy effects produced by monitoring and use of metacognitive awareness in regulating strategy choice were more pronounced in the younger compared with the older sample in this study. 相似文献
58.
Consideration and use of remarriage as a response to cope with the death of a husband was examined in 39 women who had been widowed and had subsequently remarried, 192 widows who had considered remarriage but had not yet remarried, and 420 widows who had not considered remarriage. Controlling for age, we found that women who had remarried reported fewer current concerns than did the other two groups. Furthermore, we found that women who retrospectively recalled the most concerns immediately after the death of the spouse were the ones who eventually remarried. The remarried group believed that they were experiencing significantly fewer concerns now than they had after the spouse's death; the women who had not considered remarriage believed that they were experiencing the same number of concerns now as before; and those women who had considered remarriage believed that they were experiencing significantly more concerns. Implications for remarriage as a coping mechanism for widowhood and the relation of age to remarriage decisions are discussed. 相似文献
59.
60.
In contrast to theoretical discussions about potential professional liability of clinical ethicists, this report gives the results of empirical data gathered in a national survey of clinical medical ethicists. The report assesses the types of activities of clinical ethicists, the extent and types of their professional liability coverage, and the influence that concerns about legal liability has on how they function as clinical ethicists. In addition demographic data on age, sex, educational background, etc. are reported. The results show that while nearly one third (28.9%) of the ethicists regularly make recommendations about patient care, only 10.8% of them regularly make entries in the medical record; only approximately half (53.0%) of them are covered by professional liability (malpractice) insurance; and the vast majority (84.3%) of them say that concerns about legal liability do not influence the way they function as clinical ethicists. 相似文献