全文获取类型
收费全文 | 9117篇 |
免费 | 407篇 |
国内免费 | 2篇 |
出版年
2022年 | 45篇 |
2021年 | 110篇 |
2020年 | 174篇 |
2019年 | 166篇 |
2018年 | 251篇 |
2017年 | 221篇 |
2016年 | 298篇 |
2015年 | 217篇 |
2014年 | 257篇 |
2013年 | 895篇 |
2012年 | 433篇 |
2011年 | 454篇 |
2010年 | 290篇 |
2009年 | 280篇 |
2008年 | 434篇 |
2007年 | 424篇 |
2006年 | 353篇 |
2005年 | 358篇 |
2004年 | 350篇 |
2003年 | 338篇 |
2002年 | 319篇 |
2001年 | 142篇 |
2000年 | 119篇 |
1999年 | 143篇 |
1998年 | 131篇 |
1997年 | 122篇 |
1996年 | 107篇 |
1995年 | 96篇 |
1994年 | 88篇 |
1993年 | 96篇 |
1992年 | 99篇 |
1991年 | 89篇 |
1990年 | 80篇 |
1989年 | 59篇 |
1988年 | 54篇 |
1987年 | 62篇 |
1986年 | 66篇 |
1985年 | 77篇 |
1984年 | 79篇 |
1983年 | 81篇 |
1982年 | 70篇 |
1981年 | 80篇 |
1980年 | 81篇 |
1979年 | 67篇 |
1978年 | 75篇 |
1977年 | 76篇 |
1976年 | 73篇 |
1975年 | 60篇 |
1974年 | 64篇 |
1966年 | 43篇 |
排序方式: 共有9526条查询结果,搜索用时 15 毫秒
131.
This is an ecological test of adaptation in head-injured adults, reporting reliability and validity of the Executive Function Route-finding Task (EFRT; Boyd and Sautter, 1985). A Likert scale was used to rate executive aspects of route-finding such as task formulation, strategy of approach, detection and correction of errors, and dependence on cueing among 31 head-injured young adults within a large rehabilitation facility. The Task has high inter-rater reliability and acceptable concurrent validity with other neuropsychological constructs. 相似文献
132.
133.
134.
135.
136.
Predictive testing for Huntington disease is presently offered in a select few medical genetics centers in the United States. This is in part due to the labor intensive counseling and psychological testing suggested by the research protocols. We discuss some specific suggestions for establishing programs for Huntington disease predictive testing within pre-existing medical genetics clinics to encourage more centers to offer presymptomatic testing. This will allow more at risk individuals the opportunity to consider predictive testing and cut down the expenses of traveling to the few predictive testing centers that currently exist. The counseling principals will remain similar to those discussed here, even following the identification of the Huntington disease mutation. 相似文献
137.
Eric P. Ochs Marta Meana Kenneth Mah Yitzchak M. Binik 《Behavior research methods》1993,25(2):189-194
Sexpert, an expert computer program designed to counsel couples on their sexual relationships, was evaluated. Eighty-one heterosexual couples were assigned to one of three experimental manipulations (Sexpert, video, and self-help book) or a control condition. Daily sexual behavior monitoring forms and structured retrospective reports served as measures of baseline and post-manipulation behavior. Daily monitoring of sexual behavior failed to show significant changes occurring after the manipulations. However, retrospective data concerning the postmanipulation period show that compared with the control, the Sexpert, video, and book manipulations had a significant positive impact on couples’ sexual behavior, communication, and learning about sexuality. Sexpert, video, and book were similarly evaluated, except that Sexpert was evaluated as more engaging. In addition, subjects retrospectively reported positive changes in communication, relationship satisfaction, and sexual behavior during the baseline period. This suggests that daily behavioral monitoring is intrusive and may confound the variables measured by it. 相似文献
138.
Eric Stice Manuel Barrera Jr. Laurie Chassin 《Journal of abnormal child psychology》1993,21(6):609-629
Past research has generated inconsistent findings regarding the relation of parental control and support to adolescent problem behaviors. Using two waves of data collected 1 year apart, the current study examined the influence of parental control and support on adolescents' externalizing symptoms, alcohol use, and illicit substance use. A sample of adolescents and their parents (@#@ N =454) was studied, within which approximately half of the adolescents were at high risk because of parental alcoholism. Multipleregression analyses of crosssectional data showed a negative quadratic relation between parental control and adolescent externalizing symptomatology, and between parental control and adolescent illicit substance use. Parental control had a negative linear relation to adolescent alcohol use. Parental support showed a negative quadratic relation to adolescent illicit substance use, and negative linear relations to adolescent alcohol use and externalizing symptoms. Although longitudinally adjusted contemporaneous results were consistent with crosssectional findings, parental support and control were prospectively related only to adolescent alcohol use. The quadratic relations suggest that adolescents who receive either extreme of parental support or control are at risk for problem behaviors. 相似文献
139.
Jan Bruins Marieke Den Ouden Eric Dpret Jan Extra Malgorzata Grnik Antonio Iannaccone Ewa Kramarczyk Werner Melcher Juan Muozs Sik Hung Ng Birgit Steller 《European journal of social psychology》1993,23(4):411-426
The present research focused on power processes in a simulated organizational structure consisting of three hierarchical levels occupied by different numbers of mules and females. Subjects were presented with a chart showing the organizational hierarchy of which they were a member placed at the lowest level, and asked to nominate any person for the leader position vacated by the current incumbent. The results of Experiment I (n = 88 Dutch male and female university students) showed that male subjects strongly overnominated themselves, whereas a majority of the female subjects nominated either self or another female. Of the others that were nominated by both males and females, almost all were occupants of positions immediately below the leader position, indicating the normative influence of a bureaucratic rule of leader succession. Experiment 2 was a replicational study carried out in a different culture (n = lOl Polish male and female university students). Polish subjects adhered to the bureaucratic rule more strongly than their Dutch counterparts, and both females and males nominated mostly males. Results are discussed with reference to gender self-stereotypes and cultural differences. 相似文献
140.
Thomas D. Senor 《Synthese》1993,94(3):453-476
In this paper I argue that internalistic foundationalist theories of the justification of memory belief are inadequate. Taking a discussion of John Pollock as a starting point, I argue against any theory that requires a memory belief to be based on a phenomenal state in order to be justified. I then consider another version of internalistic foundationalism and claim that it, too, is open to important objections. Finally, I note that both varieties of foundationalism fail to account for the epistemic status of our justified nonoccurrent beliefs, and hence are drastically incomplete. 相似文献