首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   80453篇
  免费   2536篇
  国内免费   36篇
  2020年   768篇
  2019年   953篇
  2018年   4402篇
  2017年   3738篇
  2016年   3384篇
  2015年   1125篇
  2014年   1258篇
  2013年   5765篇
  2012年   2602篇
  2011年   4367篇
  2010年   3656篇
  2009年   2718篇
  2008年   3600篇
  2007年   3918篇
  2006年   1859篇
  2005年   1842篇
  2004年   1811篇
  2003年   1604篇
  2002年   1576篇
  2001年   1946篇
  2000年   1884篇
  1999年   1445篇
  1998年   850篇
  1997年   728篇
  1996年   613篇
  1995年   640篇
  1994年   627篇
  1993年   633篇
  1992年   1116篇
  1991年   1050篇
  1990年   1036篇
  1989年   943篇
  1988年   915篇
  1987年   901篇
  1986年   889篇
  1985年   938篇
  1984年   781篇
  1983年   670篇
  1982年   571篇
  1981年   534篇
  1980年   528篇
  1979年   756篇
  1978年   584篇
  1976年   538篇
  1975年   653篇
  1974年   697篇
  1973年   652篇
  1972年   575篇
  1968年   558篇
  1967年   557篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
861.
862.
Homicide which occurs in intimate social relationships was studied using data from three Western Canadian cities. Variables which may be related to the relationship and homicide are also examined. Unstable relationships are clearly differentiated from other relationships and are more likely to result in homicide. Implications for future research are discussed.  相似文献   
863.
The present article reviews amnesia for criminal offenses. It discusses the organic disorders most likely to be implicated, and the nature and differentiation of psychogenic amnesia. With the exception of alcohol and drug intoxication, organic dysfunction is a rare (though important) cause of amnesia for crime. Likewise, fugue states may occasionally be triggered by an offence, but are a very rare cause of the amnesia claimed by offenders. Amnesia is most commonly seen in homicide cases, in which it is claimed by 25% to 45% of offenders, but it occurs also in other types of violent crime, and occasionally in nonviolent crime. It arises in states of extreme emotional arousal, in alcoholic intoxication, and in states of florid psychosis; and it is also associated with depressed mood. Various methods have been advocated for the differentiation of genuine amnesia from deliberate simulation: this distinction can be difficult, but it is noticeable that many amnesic subjects either have reported the crime themselves or have made no attempt to conceal it. The nature of the deficit in this type of amnesia, and its implications for assessment, are also discussed.  相似文献   
864.
Unionized workers at a factory were asked to rate a variety of reasons which would justify the use of sabotage in an organization, as well as the justifiability of four general methods of sabotage (slowdowns, destructiveness, dishonesty, and causing chaos). Results showed that as compared to those who didn't accept a wide variety of reasons for sabotage, those who accepted a variety of reasons would more readily justify all forms of sabotage except dishonesty. The data is discussed in terms of the reasons for the lack of justification that dishonesty receives, as well as future directions for the study of sabotage.  相似文献   
865.
Increasing numbers of Spanish-heritage immigrant families in the United States are beginning to seek therapy for family conflicts related to their adapation to the new country/culture. This paper focuses on the difficulties experienced by these families and presents issues specific to therapy with them. Effective therapy with these families requires that therapists focus on clarification of the differential adaptation rates of family members and facilitate a resolution of the family's transitional conflicts(s). Six cases involving such families are presented.David A. Baptiste, Jr., PhD, is a Psychologist and Marital and Family therapist in the counseling center at New Mexico State University and in private practice, Las Cruce, NM.Revision of a paper presented to the International Round Table for the Advancement of Counseling, Annual Conference, Utrech, The Netherlands, July, 1985. The author expresses appreciation to Judith Landau-Stanton for her helpful review of an earlier draft of this paper.  相似文献   
866.
A distinction can be drawn between those items on the Beck Depression Inventory (BDI) that reflect mainly cognitive and emotional symptoms and those that reflect somatic symptoms. Responses to the BDI were obtained from women at 3, 6, 9, and 24 weeks postpartum. The covariances of cognitive and somatic symptom scores across the four time points were closely fit by a structural equations model referred to as the simplex. The modeling indicates that earlier cognitive scores directly predict later somatic scores but that early somatic scores do not directly predict later cognitive scores. Other data confirm the results.Much of this research was supported while the first author was an NIMH Fellow at the University of Iowa (MH15168).  相似文献   
867.
The present study was conducted to examine the hypothesis that compliant chronically ill patients, typically described as adjusted, reinforce more positive social environments using behavioral controls than noncompliant patients, typically described as maladjusted. Specifically, it is hypothesized that diet-compliant chronic hemodialysis patients emit significnatly more active involvement-in-treatment behaviors and more social behaviors than diet-noncompliant chronic hemodialysis patients. Subjects, who ranged in age from 30 to 77 years, were outpatients at a kidney center. Behavioral observations were conducted to assess the occurrence or frequency of (1) four involvement-in-treatment behaviors that are routinely taught to all patients and (2) two social behaviors, which were patient verbalizations and smiles. The results showed that compliant patients emitted significantly more involvement-in-treatment behaviors and smiles than noncompliant patients. Results support the proposed control framework that compliant, in contrast to non-compliant, chronically ill patients have recourse through positive behavioral controls when adjusting to the stresses of illness. It was proposed that through these controls, compliant patients reinforce positive environments rather than simply respond to life circumstances as given.  相似文献   
868.
Several theories have been presented that predict differences between women and men in attitudes toward the environment due to differences in sex roles. Research on which these theories can be tested has tended to examine general environmental concern, and the results have generally been weak and inconclusive. Using an approach suggested in the literature, this study examines sex differences in concern and knowledge, using multi-item scales for each, about one environmental issue — acid rain. The results contradict the theories being tested, however: if there is a sex difference, men are found to be more concerned and knowledgeable about the environmental problem.  相似文献   
869.
A total of 45 subjects in three age groups (younger, middle-age, older) were trained to word process on microcomputers using a commercial training program and an experimenter-designed test and evaluation protocol. Although all of the subjects mastered the essentials of word processing, the older group took significantly longer to complete the training and evaluation procedures and performed more poorly on a review examination that tested their knowledge of the word-processing commands and techniques. The results are discussed in relation to requirements for trainer assistance, motivational factors, and the need to design training protocols that meet the needs of older adults.  相似文献   
870.
I hypothesized that feelings of strain experienced by an adult daughter are likely to interfere with the nature of her relationship with her aging mother and to have a potentially deleterious effect on the mother. To test this proposition, I devised a study that examined the impact of two brief interventions on 37 middle-aged women and 24 of their elderly mothers: (a) a cognitive-behavioral presentation designed to reduce the daughter's unrealistic feelings of responsibility and (b) a supportive-educational presentation designed to increase the daughter's awareness of her mother's needs. I found that the first procedure was more effective than the second in reducing the daughter's burden, improving the mother-daughter relationship, and decreasing the loneliness experienced by the elderly mother.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号