全文获取类型
收费全文 | 59343篇 |
免费 | 2406篇 |
国内免费 | 19篇 |
出版年
2020年 | 553篇 |
2019年 | 742篇 |
2018年 | 988篇 |
2017年 | 1025篇 |
2016年 | 1084篇 |
2015年 | 790篇 |
2014年 | 926篇 |
2013年 | 4330篇 |
2012年 | 1740篇 |
2011年 | 1905篇 |
2010年 | 1178篇 |
2009年 | 1168篇 |
2008年 | 1683篇 |
2007年 | 1701篇 |
2006年 | 1546篇 |
2005年 | 1373篇 |
2004年 | 1266篇 |
2003年 | 1187篇 |
2002年 | 1295篇 |
2001年 | 1965篇 |
2000年 | 1940篇 |
1999年 | 1467篇 |
1998年 | 683篇 |
1997年 | 609篇 |
1996年 | 607篇 |
1993年 | 551篇 |
1992年 | 1239篇 |
1991年 | 1140篇 |
1990年 | 1123篇 |
1989年 | 1028篇 |
1988年 | 1008篇 |
1987年 | 964篇 |
1986年 | 1039篇 |
1985年 | 1048篇 |
1984年 | 878篇 |
1983年 | 799篇 |
1982年 | 559篇 |
1981年 | 558篇 |
1979年 | 934篇 |
1978年 | 666篇 |
1975年 | 762篇 |
1974年 | 814篇 |
1973年 | 909篇 |
1972年 | 770篇 |
1971年 | 724篇 |
1970年 | 643篇 |
1969年 | 670篇 |
1968年 | 857篇 |
1967年 | 778篇 |
1966年 | 654篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
191.
Patrick J. Schloss Christine Santoro Constance Ellen Wood Mary Jo Bedner 《Journal of applied behavior analysis》1988,21(1):97-102
Interview skills deficits may limit employment prospects of mentally retarded adults. Although numerous papers highlight the importance of interview skills, few have validated effective strategies for use with mentally retarded persons. Further, there has been a lack of research contrasting rival interview skills training strategies. The present study was conducted with two mentally retarded young adults. It contrasted peer-directed instruction, in which both participants were equally deficient in the target skills, with teacher-directed instruction. Results of the investigation indicated that instruction, rehearsal, and feedback may be effective strategies regardless of who provides instruction. Comparisons of teacher-directed and peer-directed instruction indicated little or no difference in the effectiveness of the two procedures. However, the peer-directed procedure involved considerably less staff time than did the teacher-directed procedure. 相似文献
192.
193.
194.
Research in both laboratory and field settings has suggested a link between thermal stress and violent behavior, and both linear and curvilinear models have been investigated. A dearth of field studies prompted the analysis reported here, which is based on data for some 10,000 aggravated assaults occurring the City of Dallas in 1980 (a summer of severe heat stress) and 1981. This analysis replicates and extends certain aspects of recent work by Anderson and Anderson (1984) relating to the so-called linear and curvilinear hypotheses. Thermal stress is measured in two ways: a Discomfort Index (DI), which takes into account the influence of humidity acting in concert with temperature, and ambient temperature. Regression analyses were performed in two stages. In the first, data for all neighborhoods and all days of the study period were combined into ambient temperature and DI models. At the second stage, models differentiated between the three levels of neighborhood socioeconomic status. With weekend controlled, DI and ambient temperature were significant independent variables in the ‘overall’ model and in medium and low status neighborhoods. However, when linear effects were controlled, the curvilinear measures were never significant. The analysis generally tended to confirm Anderson and Anderson's suggestion that a reduction of aggression with increasing temperature does not appear to occur within the normal range of temperatures. This analysis further suggested that the hypothesized curvilinear effect is weak, if not entirely absent, even during conditions of extreme heat. 相似文献
195.
196.
197.
The startle probe response: a new measure of emotion? 总被引:17,自引:0,他引:17
198.
Amnesia as a consequence of male rape: a case report 总被引:2,自引:0,他引:2
199.
200.
J M Lewis 《Family process》1988,27(3):273-283
At 1 year postpartum, 22 of 38 couples demonstrated the same level of marital competence as they had prenatally, 14 couples demonstrated deterioration in their marital relationship, and 2 couples were improved. At each of four levels of marital competence, there was a trend for the couples to demonstrate the same relationship response to parenthood. Highly competent relationships remained at high levels of competence. Competent but pained relationships were most vulnerable to regressive change in structure. Dominant-submissive, complementary relationships tended to remain stable at that level. Dominant-submissive, conflicted or severely conflicted relationships were most unpredictable and stability, regression, and improvement were seen. These findings are explored for possible correlations and are discussed from the perspective of several current models of family development. 相似文献