全文获取类型
收费全文 | 46195篇 |
免费 | 1912篇 |
国内免费 | 32篇 |
出版年
2020年 | 498篇 |
2019年 | 627篇 |
2018年 | 875篇 |
2017年 | 926篇 |
2016年 | 893篇 |
2015年 | 669篇 |
2014年 | 762篇 |
2013年 | 3588篇 |
2012年 | 1366篇 |
2011年 | 1535篇 |
2010年 | 961篇 |
2009年 | 924篇 |
2008年 | 1287篇 |
2007年 | 1208篇 |
2006年 | 1107篇 |
2005年 | 940篇 |
2004年 | 884篇 |
2003年 | 911篇 |
2002年 | 874篇 |
2001年 | 1736篇 |
2000年 | 1696篇 |
1999年 | 1196篇 |
1998年 | 524篇 |
1997年 | 452篇 |
1996年 | 419篇 |
1992年 | 1004篇 |
1991年 | 959篇 |
1990年 | 941篇 |
1989年 | 891篇 |
1988年 | 838篇 |
1987年 | 809篇 |
1986年 | 800篇 |
1985年 | 855篇 |
1984年 | 673篇 |
1983年 | 547篇 |
1981年 | 413篇 |
1979年 | 625篇 |
1978年 | 481篇 |
1977年 | 443篇 |
1976年 | 418篇 |
1975年 | 575篇 |
1974年 | 633篇 |
1973年 | 645篇 |
1972年 | 565篇 |
1971年 | 469篇 |
1970年 | 438篇 |
1969年 | 505篇 |
1968年 | 564篇 |
1967年 | 478篇 |
1966年 | 554篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
241.
Richard S. Lehman 《Behavior research methods》1988,20(2):236-242
Members of the Society for Computers in Psychology responded to a survey concerning their programming practices and language use. The results reveal current hardware and software use; relationships among computer science training, task, and language choice and usage; and areas in which attention to some structured programming principles might improve the code that psychologists write. 相似文献
242.
243.
This paper evaluates intervention programs in schools using the theoretical framework of the critical sociology of education, and most specifically, the extent to which schools are autonomous from the larger society. Three different types of intervention programs are reviewed: drug abuse prevention, sex education, and programs to change gender stereotypes, all of which were found to have limited effectiveness. Schools appear unable to change behaviors which are prevalent in a culture because they themselves are strongly influenced by that culture, and because adolescents are influenced by forces outside school. To be effective, such interventions would seem to require governmental agencies, community groups, and the media to work with the schools in order to influence the culture and thus produce behavioral changes in individuals. 相似文献
244.
The present study examined the relationship between adolescents' attitudes toward suicide and their psychosocial background. It also evaluated the association between attitudes toward suicide and the subjects' own suicidal tendencies. A questionnaire assessing these issues was administered to 525 Israeli adolescents. Results indicated that significantly more females, nonreligious adolescents, those exposed to suicidal behavior, and those with increased suicidal risk held more accepting attitudes. Ethnic origin, socioeconomic status, and living in intact/nonintact families were not associated with adolescents' attitudes toward suicide. 相似文献
245.
Two projective techniques were employed to explore the psychological characteristics of teenage mothers who were found, in a previous study, to have experienced more traumatic childhoods than the nonmother control group. Part I, presented here, investigated ego development using the Loevinger Sentence Completion Test. (Part II, responses to a set of TAT cards, will appear in a subsequent issue of Adolescence.) In comparison with the nonmothers, teenage mothers demonstrated more mature ego development. This is in distinct contrast with most reports in the literature, and the ramifications of these results are discussed. In addition, content analyses of the responses to the Sentence Completion Test confirm the highly involved mother-daughter and negative father-daughter relationships found in the previous study with this sample. 相似文献
246.
This paper deals with girls aged 13 to 21 who have run away from home. Social workers who work with such girls point out that they are not a homogeneous population and that their motives can be very different. This study divides their motives for running away into two types, "running from" and "running to," and describes the specific personality traits associated with each. Findings indicate that girls who "run to" are younger, more impulsive, have an internal locus of control and a history of more runaways and longer periods of staying away from home. Girls who "run from," on the other hand, are older, more reflective, have an external locus of control and a history of fewer runaways and shorter periods away from home. 相似文献
247.
248.
Neutrality is a central concept within the theory of psychoanalytic technique. We spell out the major controversies in which the concept has become embroiled, and provide a definition that we believe coincides with actual psychoanalytic practice. We discuss its merits and weaknesses, noting also the negative consequences of relying on older definitions. We relate neutrality to the interpretive process, indicating ways interpretation protects neutrality and is made more effective by it. We discuss the complex and controversial relation between neutrality and the analyst's therapeutic intent. 相似文献
249.
Seventh-grade students and teachers from twenty-three middle and junior high schools were surveyed to determine the association between teacher attitudes, behavioral intentions, and smoking behavior and the prevalence of student smoking. Teacher attitudes toward smoking policies were found to be strongly related to the current smoking behavior of the teacher but not consistently related to student smoking. In addition, teacher likelihood of intervening showed a modest association with teacher smoking status, with current smokers generally indicating being the least likely to intervene for student possession or use of cigarettes. Teacher intentions to intervene were strongly associated with the prevalence of smoking among boys but not girls. 相似文献
250.
A series of focus group interviews was used to identify major sources of stress and coping responses of Grade 10 students. Relationships with parents and family, work, and lack of money were found to be important sources of stress. Major coping responses included substance use and diversionary activities. Differences between academic streams (tracks) in sources of stress and coping responses were examined. 相似文献