全文获取类型
收费全文 | 52037篇 |
免费 | 1337篇 |
国内免费 | 8篇 |
专业分类
53382篇 |
出版年
2019年 | 435篇 |
2018年 | 3862篇 |
2017年 | 3224篇 |
2016年 | 2717篇 |
2015年 | 602篇 |
2014年 | 600篇 |
2013年 | 2441篇 |
2012年 | 1500篇 |
2011年 | 3290篇 |
2010年 | 2996篇 |
2009年 | 2012篇 |
2008年 | 2522篇 |
2007年 | 2925篇 |
2006年 | 850篇 |
2005年 | 947篇 |
2004年 | 890篇 |
2003年 | 767篇 |
2002年 | 747篇 |
2001年 | 1045篇 |
2000年 | 976篇 |
1999年 | 723篇 |
1998年 | 401篇 |
1997年 | 325篇 |
1996年 | 314篇 |
1992年 | 548篇 |
1991年 | 541篇 |
1990年 | 533篇 |
1989年 | 537篇 |
1988年 | 530篇 |
1987年 | 494篇 |
1986年 | 521篇 |
1985年 | 570篇 |
1984年 | 451篇 |
1983年 | 431篇 |
1982年 | 355篇 |
1981年 | 337篇 |
1979年 | 521篇 |
1978年 | 378篇 |
1977年 | 311篇 |
1976年 | 359篇 |
1975年 | 432篇 |
1974年 | 486篇 |
1973年 | 507篇 |
1972年 | 407篇 |
1971年 | 381篇 |
1970年 | 378篇 |
1969年 | 409篇 |
1968年 | 488篇 |
1967年 | 421篇 |
1966年 | 422篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
71.
72.
73.
74.
75.
76.
A high proportion of positive responses was obtained from students who participated in three different types of pre-college orientation programs. Small group approaches consistently elicited more favorable responses than assemblies or large groups. Greater faculty involvement resulted in participants' noting an increased academic emphasis. Participants believed they had benefited in some way from programs which varied considerably as to length, activities, organization, and purposes. 相似文献
77.
78.
Recidivism data derived from various sources over a follow-up period of 1–11 yr, provided the basis for appraising the effectiveness of a comprehensive cognitive-behavioral treatment program for familial and nonfamilial child molesters. Unofficial records held by police and Children's Aid Societies proved to be the best data for estimating recidivism. These data revealed increases in recidivism with longer follow-up periods, but there were consistent advantages for the treated over the untreated patients. Men who had sexually abused the daughters of other people demonstrated the clearest treatment benefits. The younger offenders and those who had engaged in genital-genital contact with their victims were more likely to reoffend even if they were treated. Contrary to the expectations of behavior therapists, indices of deviant sexual preferences did not predict outcome. 相似文献
79.
80.
In order to examine the effects that race and personality type have on self-reported drinking practices, samples of 49 White and 49 Black male alcoholics were matched on age and education, and classified into two personality types according to MMPI scores. The results of multivariate and univariate analyses of variance yielded significant main effects. White alcoholics reported a greater: (a) use of alcohol for symptomatic relief of psychological distress, (b) loss of motor control and tendency to engage in destructive acts, and (c) daily consumption of beverage alcohol than Black alcoholics. Alcoholics with psychiatric-appearing MMPI profiles reported greater: (a) social benefits of alcohol use, (b) alcohol use for symptomatic relief of psychological distress, and (c) perceptual distortions associated with alcohol withdrawal than alcoholics with characterlogical-appearing MMPIs. Results were discussed in terms of need to control confounding effects of biosocial variables in cross-cultural research and implications that these effects may have on the generalizability of alcoholic personality typologies. 相似文献