全文获取类型
收费全文 | 160082篇 |
免费 | 7419篇 |
国内免费 | 155篇 |
专业分类
167656篇 |
出版年
2021年 | 1483篇 |
2020年 | 2764篇 |
2019年 | 3417篇 |
2018年 | 3354篇 |
2017年 | 3809篇 |
2016年 | 4502篇 |
2015年 | 3905篇 |
2014年 | 4779篇 |
2013年 | 23375篇 |
2012年 | 4118篇 |
2011年 | 3096篇 |
2010年 | 3671篇 |
2009年 | 4657篇 |
2008年 | 3382篇 |
2007年 | 2878篇 |
2006年 | 3618篇 |
2005年 | 3625篇 |
2004年 | 3137篇 |
2003年 | 2800篇 |
2002年 | 2591篇 |
2001年 | 2705篇 |
2000年 | 2567篇 |
1999年 | 2786篇 |
1998年 | 2768篇 |
1997年 | 2614篇 |
1996年 | 2544篇 |
1995年 | 2369篇 |
1994年 | 2337篇 |
1993年 | 2298篇 |
1992年 | 2284篇 |
1991年 | 2140篇 |
1990年 | 1973篇 |
1989年 | 1927篇 |
1988年 | 1902篇 |
1987年 | 1951篇 |
1986年 | 1918篇 |
1985年 | 2155篇 |
1984年 | 2333篇 |
1983年 | 2155篇 |
1982年 | 2309篇 |
1981年 | 2282篇 |
1980年 | 2120篇 |
1979年 | 1988篇 |
1978年 | 2054篇 |
1977年 | 2048篇 |
1976年 | 1841篇 |
1975年 | 1817篇 |
1974年 | 1842篇 |
1973年 | 1684篇 |
1972年 | 1310篇 |
排序方式: 共有10000条查询结果,搜索用时 8 毫秒
871.
872.
A.C. Mundy-Castle D.J. Wilson P.S. Sibanda J.S. Sibanda 《International journal of psychology》1989,24(1-5):539-546
The cognitive effects of LOGO were examined among 11–12-year-old black and white Zimbabwean girls and boys. Fifty-two experimental group children were exposed to a BBC LOGO programme with a screen turtle. Forty-one control group children received no exposure to computers at school. Pre-tests on four WISC-R subscales were held in January, 1987 and post-tests on the same four WISC-R subscales were held in November/December, 1987. The data were analyzed with multivariate analysis of covariance, using pre-test scores as the covariate. The results suggested that children in the experimental group did better on the WISC-R Arithmetic scale and that black girls exposed to LOGO showed particular gains in spatial reasoning, as measured by the WISC-R Block Design scale. It is concluded that LOGO appears to facilitate cognitive growth. Methodological limitations of the present study are discussed and suggestions for future research are presented. 相似文献
873.
Kristin E. Secan Andrew L. Egel Cynthia S. Tilley 《Journal of applied behavior analysis》1989,22(2):181-196
We conducted an investigation to evaluate the effects of a training strategy for teaching autistic students generalized responses to three forms of wh— questions (what, how, and why). Students were taught, using modeling and reinforcement procedures, to answer questions with magazine pictures as the referents. Each question form was divided into two or more subcomponents reflective of common social usage and was taught within the context of a modified multiple probe design across subcomponents. Following acquisition of each subcomponent, generalization to natural context and storybook questions was assessed; additional probes were conducted to assess responding over time and whether acquisition of responses to questions promoted question-asking skills. Results showed that the picture training procedure was effective in teaching a generalized response to questions for which the relevant cue was visible, whereas specific generalization programming was required for situations in which the relevant cue was not visible. All acquired responses were durable over time. 相似文献
874.
MICHAEL R. LIEPMAN M.D. TED D. NIRENBERG Ph.D. RICHARD H. DOOLITTLE M.S.W. Ed.D. ANN M. BEGIN M.A THOMAS E. BROFFMAN M.S.W. L.I.C.S.W. MARK E. BABICH M.A. 《Family process》1989,28(2):239-249
Family functioning of 20 alcoholic male veterans and their female partners was assessed in relation to drinking (wet) and abstinent (dry) intervals. Repeated measures analyses performed on the McMaster Family Assessment Device (FAD) indicated that on all 7 scales of the FAD, alcoholics and their mates perceived family functioning to be better during dry than wet periods. In contrast to their alcoholic mates, female partners gave healthier ratings to all FAD scales except Roles in the dry condition and Affective Involvement in the wet condition. According to published cutoff scores for healthy and unhealthy family functioning, alcoholics as a group viewed their wet and dry family functioning as unhealthy, although the female group regarded the family's dry Problem Solving and Behavioral Control as healthy. These findings suggest that the family functioning of alcohol-involved couples is biphasic, oscillating between drinking and abstinent periods. 相似文献
875.
876.
877.
Inferring Emotions From Multiple Cues: Revealing Age-Related Differences in "How" Without Differences in "Can" 总被引:1,自引:0,他引:1
This study examined differences in children's use of social cues to make emotional inferences. Children ages 4, 5, and 8 years were presented with stimuli that depicted another child in affectively congruous and affectively incongruous expression/situation combinations. The intensity of positive and negative facial expressions was varied across situations. Subjects judged the target's feelings and selected among the alternative facial expressions or situations the one they had just seen. No significant age-related differences were found in the extent to which children registered and used both the expressive and situational information when making emotional inferences. The main experimental measure asked children to explain their judgments. In explaining their judgments, subjects' rationales indicated that they: (a) used both the situational and expressive cues; and (b) were sensitive to congruous versus incongruous cues, and even to mild versus strong incongruous cues. Children's rationales also reflected a sensitivity to expressive and situational negativity. For each age group, the rationales were more elaborate when the cues were problematic. Characteristic strategies, however, were also found for each age group. These distinct strategies may reflect social-life changes in children's social "theories" of emotion. 相似文献
878.
Continuities and Discontinuities in Self-Regulatory and Self-Evaluative Processes: A Developmental Theory Relating Self and Affect 总被引:3,自引:0,他引:3
E. Tory Higgins 《Journal of personality》1989,57(2):407-444
This article presents a developmental theory of the relation between self and affect. Self-discrepancy theory (Higgins, 1987) is used as a framework for considering developmental and individual differences in children's self-concepts, self-regulation, and self-evaluation. Developmental changes in children's representational capacities are described that produce developmental shifts in this self-system. Different modes of caretaker-child interaction are distinguished in terms of how features of the interaction impact psychologically on the child. The implications of these differences for children's self-system and emotional/behavioral vulnerabilities are discussed. The development of self-regulatory and self-evaluative processes are distinguished with respect to developmental continuities and discontinuities. Patterns of sex differences in socialization, conduct, and emotional problems are described to exemplify the need for distinguishing these two processes developmentally. The question is raised whether children can be socialized to maximize the positive conduct valued by society and the positive self-regard valued by individuals. 相似文献
879.
Gender and Sex-Role Influences on Children''s Self-Esteem 总被引:1,自引:0,他引:1
This study examined direct and moderating influences of gender and sex-role orientations on children's general self-esteem. Moderating influences of these variables on the prediction of self-esteem were examined with respect to two sets of competence beliefs regarding school achievement: perceived capacities and perceived strategies for doing well in school. One hundred nineteen fourth-, fifth-, and sixth-grade children were assessed using the Perceived Competence Scale for Children (Harter, 1982), the Multidimensional Measure of Children's Perceptions of Control (Connell, 1985), and the Children's Personal Attributes Questionnaire (Hall & Halberstadt, 1980). Correlational and hierarchical multiple regression analyses indicated that upper elementary schoolchildren's general self-esteem is (a) marginally related to biological gender, with boys showing a slight advantage; (b) significantly related to masculinity and androgyny; and (c) predicted more strongly by perceived capacities to do schoolwork in girls than in boys, and by perceived (lack of) strategies for academic success in nontraditionally sex-typed children than in traditionally sex-typed children. Of the two nontraditionally sex-typed groups, androgynous children were found to have more positive school competence beliefs than were undifferentiated children. 相似文献
880.
W. STEINBERG 《The Journal of analytical psychology》1989,34(4):339-352
Depression is differentiated into normal and pathological. Pathological depression is further divided into simple and melancholic. The characteristics of each disordered form are described. Jung's ideas on depression are described in terms of this theoretical standpoint. The concepts used by Jung to explain depression are derived from his libido theory. Through introversion unconscious contents necessary to compensate a one-sided attitude of the ego are made conscious. Introversion depletes the ego of its energy. Depression is the depleted ego's experience of itself. Jung's theory is useful to explain normal depression associated to the process of transformation. It has also been extended to explain disorders of depression via the concept of involuntary or forced introversion in the service of compensation. His therapeutic approach consisted of rectifying the imbalance of psychic energy by helping the ego to integrate unconscious contents. The subsequent accrual of psychic energy redresses the problem of the ego's depletion and depression eases. In the discussion, Jung's contributions to the understanding of depression are recognised, especially his insight into the relationship between normal depression and the process of transformation. The explanatory limitations of Jung's ideas for depressive disorder are also recognised and discussed in relation to aetiology, introversion-extraversion, aggression and psychotherapy. Current clinical information suggests that a theory of depression needs to integrate and also to reformulate some of Jung's ideas. 相似文献