全文获取类型
收费全文 | 2007篇 |
免费 | 161篇 |
国内免费 | 1篇 |
出版年
2023年 | 19篇 |
2020年 | 48篇 |
2018年 | 24篇 |
2017年 | 48篇 |
2016年 | 66篇 |
2015年 | 53篇 |
2014年 | 83篇 |
2013年 | 337篇 |
2012年 | 55篇 |
2011年 | 36篇 |
2010年 | 50篇 |
2009年 | 79篇 |
2008年 | 45篇 |
2007年 | 27篇 |
2006年 | 34篇 |
2004年 | 33篇 |
2003年 | 26篇 |
2002年 | 31篇 |
2000年 | 25篇 |
1999年 | 26篇 |
1998年 | 26篇 |
1997年 | 26篇 |
1996年 | 34篇 |
1994年 | 29篇 |
1993年 | 35篇 |
1992年 | 30篇 |
1991年 | 33篇 |
1990年 | 30篇 |
1989年 | 29篇 |
1988年 | 32篇 |
1987年 | 28篇 |
1986年 | 33篇 |
1985年 | 22篇 |
1984年 | 30篇 |
1983年 | 26篇 |
1982年 | 26篇 |
1981年 | 32篇 |
1980年 | 18篇 |
1979年 | 30篇 |
1978年 | 19篇 |
1977年 | 22篇 |
1976年 | 19篇 |
1975年 | 17篇 |
1974年 | 29篇 |
1971年 | 17篇 |
1969年 | 18篇 |
1968年 | 18篇 |
1967年 | 18篇 |
1966年 | 28篇 |
1964年 | 17篇 |
排序方式: 共有2169条查询结果,搜索用时 31 毫秒
1.
Population attributable risk (PAR) estimates have been used in suicide research to evaluate the impact of psychosocial and socioeconomic risk factors, including affective disorders, traumatic life events, and unemployment. A parallel concept of preventive fraction (PF), allowing for estimation of the impact of protective factors and effectiveness of preventive interventions, is practically unknown in suicidology. The study authors discuss the application of both concepts to suicide research and prevention, and review literature on the subject. Despite several methodological and conceptual limitations, both PAR and PF are valuable instruments to inform development and evaluation of suicide prevention programs. 相似文献
2.
3.
4.
In the present paper, I critique the use of the retrospective method when it is used as a proxy for actual longitudinal data on personality development. Studies on the constructive nature of memory cast strong doubts about the meaning of retrospective data. There are good reasons, both theoretical and empirical, to distrust the accuracy of such recall concerning parenting, whether recalled by parents, children, or siblings. Instead of using the method as a shortcut to developmental data, studies examining individual differences in accuracy and distortion and the factors that moderate them may inform us of the various meanings of retrospective data. 相似文献
5.
Bernard E. Whitley Jr. 《Sex roles》1988,19(9-10):619-638
This study examined the relations of gender and three aspects of gender roles — self concept, behavior, and sexual attitudes — to three aspects of sexual behavior — sexual experience, reasons for intercourse, and contraceptive use. Gender was strongly related to all three aspects of sexual behavior. For both men and women, sex role behaviors were related to sexual experience and to reasons for intercourse, but not to contraceptive use, and sex role self-concept was unrelated to any of the aspects of sexual behavior. The results indicate that sexual behavior is influenced both by societal gender role norms and by individual differences in the acceptance of those norms. 相似文献
6.
Marianne Kastrup MD Inge Kemp Genefke MD Inge Lunde MD JØrgen Ortmann MD 《Contemporary Family Therapy》1988,10(4):280-287
This paper describes approaches taken at the International Rehabilitation and Research Centre in Copenhagen to helping torture victims and their families cope with the exposure to and aftermath of torture. 相似文献
7.
James E. McClellan Jr. 《Studies in East European Thought》1988,35(1):39-56
A philosophical movement, correctly called logical pragmatism, is growing up around the philosophy of W. V. O. Quine, Soviet scholars follow this development with clear and well-grounded understanding of the origins and tenets of the system. This essay continues the dialogue between contemporary Marxism-Leninism and logical pragmatism recommended by Soviet scholars.A Russian translation of this article is being published inFilosofskie nauki (Moscow). 相似文献
8.
R A Jones G D Morrow B R Morris J B Ries D R Wekstein 《Perceptual and motor skills》1992,74(1):227-238
The research was intended to identify the dimensions underlying self-perceived information needs and concerns of an elderly population. The spontaneously mentioned needs and concerns expressed in 271 letters from a sample of the population were extracted and a multidimensional scaling procedure was used to represent the 58 most frequently mentioned items in configurations of varying dimensionality. To interpret the multidimensional spaces, another sample of 176 elderly subjects was asked to rate the 58 concerns on eight properties. These ratings were then regressed onto the multidimensional configurations. The results indicate that the most frequently mentioned information needs and concerns of elderly persons can be parsimoniously understood in terms of three underlying dimensions: (1) Improving the Quality of Life vs Securing the Necessities of Life, (2) Health-related vs Not Health-related, and (3) Individual vs Societal Responsibility. 相似文献
9.
Caryn L. Carlson Ph.D. William E. Pelham Jr. Richard Milich Joanne Dixon 《Journal of abnormal child psychology》1992,20(2):213-232
Twenty-four boys with attention deficit-hyperactivity disorder (ADHD) participating in an intensive summer treatment program each received b.i.d. placebo and two doses of methylphenidate (MPH, 0.3 mg/kg and 0.6 mg/kg) crossed with two classroom settings: a behavior modification classroom including a token economy system, time out and daily home report card, and a regular classroom setting not using these procedures. Dependent variables included classroom observations of on-task and disruptive behavior, academic work completion and accuracy, and daily self-ratings of performance. Both MPH and behavior modification alone significantly improved children's classroom behavior, but only MPH improved children's academic productivity and accuracy. Singly, behavior therapy and 0.3 mg/kg PMH produced roughly equivalent improvements in classroom behavior. Further, the combination of behavior therapy and 0.3 mg/kg MPH resulted in maximal behavioral improvements, which were nearly identical to those obtained with 0.6 mg/kg MPH alone.The authors gratefully acknowledge the assistance of Patricia Donovan, Michelle Berry, Mary Ingram, Patricia Wells, Beth Gnagy, Karen Greenslade, Mary Hamilton, and the entire staff of the Western Psychiatric Institute and Clinic ADHD Summer Treatment Program. 相似文献
10.