全文获取类型
收费全文 | 32898篇 |
免费 | 1228篇 |
国内免费 | 15篇 |
专业分类
34141篇 |
出版年
2021年 | 286篇 |
2020年 | 453篇 |
2019年 | 455篇 |
2018年 | 669篇 |
2017年 | 710篇 |
2016年 | 711篇 |
2015年 | 497篇 |
2014年 | 575篇 |
2013年 | 2791篇 |
2012年 | 1169篇 |
2011年 | 1189篇 |
2010年 | 744篇 |
2009年 | 630篇 |
2008年 | 1032篇 |
2007年 | 877篇 |
2006年 | 782篇 |
2005年 | 715篇 |
2004年 | 606篇 |
2003年 | 619篇 |
2002年 | 612篇 |
2001年 | 756篇 |
2000年 | 763篇 |
1999年 | 523篇 |
1998年 | 280篇 |
1992年 | 502篇 |
1991年 | 482篇 |
1990年 | 483篇 |
1989年 | 488篇 |
1988年 | 439篇 |
1987年 | 442篇 |
1986年 | 460篇 |
1985年 | 502篇 |
1984年 | 431篇 |
1983年 | 390篇 |
1982年 | 280篇 |
1981年 | 324篇 |
1979年 | 454篇 |
1978年 | 325篇 |
1977年 | 291篇 |
1976年 | 285篇 |
1975年 | 418篇 |
1974年 | 470篇 |
1973年 | 492篇 |
1972年 | 423篇 |
1971年 | 418篇 |
1970年 | 388篇 |
1969年 | 412篇 |
1968年 | 509篇 |
1967年 | 485篇 |
1966年 | 468篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
851.
IVAN W. MILLER ROBERT I. KABACOFF NATHAN B. EPSTEIN DUANE S. BISHOP GABOR I. KEITNER LAWRENCE M. BALDWIN H.I.J. van der SPUY 《Family process》1994,33(1):53-69
This article describes the development and validation of the McMaster Clinical Rating Scale (MCRS). The MCRS is a 7-item scale designed to be completed by a trained rater after completion of an in-depth interview of the family. We present data from four new studies and review previously published articles concerning the reliability, validity, and clinical utility of the MCRS. Adequate interrater reliability and rater stability were obtained. The MCRS was found to correlate significantly with the self-report Family Assessment Device and to discriminate between families in different phases of a depressive disorder. 相似文献
852.
On the basis of open-ended questions and interviews using vignettes of fictitious male and female suicide committers of ages 15, 40, and 60, a list of reasons attributed to their suicides was obtained. From this list, a 45-item (5-point Likert scale) checklist was developed. This checklist was administered to a total of 232 respondents in a factorial design. The subjects were asked to respond to items concerning the fictitious suicide committer of their own age and gender, as well as to items for the other two age/gender cohorts. Thus, two groups of subjects answered the checklist. One group of respondents rated the checklist separately for the 3 age cohorts of fictitious male committers (15-year-old male, 40-year-old male, and 60-year-old male). The other group rated the checklist for the three fictitious female committers. The rank of endorsement for each cause was tabulated separately for age/gender cohorts, and indices of overall agreement were computed. The results indicated high agreement among all respondents on the causes of suicide considered to be most likely for a given cohort, as well as a distinct differentiation among cohorts and gender groups. The findings were discussed with reference to cultural stereotypes about suicide causes, and arguments were elaborated on the contribution of these shared beliefs to an individual's decision to commit suicide. 相似文献
853.
Three students with moderate disabilities were taught to read and match-to-sample sight words comprising stimulus sets based upon the four food groups. We taught students conditional discriminations within four four-member sets using a single-sample/four-comparison procedure. Students were taught A-B, B-C, and C-D conditional discriminations for each of the four potential stimulus classes. Subsequent probes tested for relations based upon symmetry and one-node and two-node transitivity. The performances for all students indicated that symmetric relations emerged before one-node transitive relations, and that one-node transitive relations emerged before two-node transitive relations. These results are consistent with a pattern of responding, referred to as a "nodality effect," in which relations with fewer nodes are demonstrated prior to the demonstration of relations with a greater number of nodes. These results extend this area of research to sight-word reading for students with moderate disabilities. 相似文献
854.
Social Dominance Orientation, Hierarchy Attenuators and Hierarchy Enhancers: Social Dominance Theory and the Criminal Justice System 总被引:1,自引:0,他引:1
Jim Sidanius James H. Liu John S. Shaw Felicia Pratto 《Journal of applied social psychology》1994,24(4):338-366
This study investigated differences in social dominance orientation between incumbents of different social roles (police officers vs. public defenders) and ethnic groups known to differ in general social status (i.e., whites vs. blacks and Hispanics). Consistent with theoretical expectations: (a) Police were significantly more social-dominance oriented than either jurors or public defenders. (b) Public defenders tended to be less social-dominance oriented than jurors. (c) Euro-Americans were significantly more social dominance oriented than Afro- and Hispanic-Americans, (d) Euro-American police officers had, by far, the highest levels of social dominance orientation. Furthermore, all of the effects above held even when controlling for demographic factors such as gender, social class, age, education, and ethnic group. The theoretical implications of these findings are discussed. 相似文献
855.
The authors examined the role of "perceived loomingness" in fear of HIV. Perceived loomingness refers to perceptions of rapid forward movement and instantaneous changes in the distance and danger of a potential threat (Riskind, 1992). One hundred and twenty undergraduates rated vignettes of two public encounters with an HIV-positive stranger. High-HIV fear subjects perceived greater loomingness and danger in these vignettes than did low-HIV fear subjects. Regression analyses that tested for a mediated model confirmed that the perceptions of loomingness may spark threat cognitions (such as the probability and imminence of harm), which, in turn, lead to fear. As predicted by the harm-looming model, loomingness also had some effects on fear that were not mediated by such standard threat cognitions. 相似文献
856.
Carolyn W. Green Shirley M. Gardner Vicki S. Canipe Dennis H. Reid 《Journal of applied behavior analysis》1994,27(3):519-531
We investigated whether variations in alertness among individuals with profound multiple disabilities affected subsequent responsiveness to training programs. Three experiments were conducted involving 5 people. In Experiment 1, results indicated that alertness of 3 individuals increased with provision of skill-acquisition training programs. Results also indicated no predictive relationship between alertness levels prior to training and subsequent responsiveness to training. Experiment 2 replicated results of Experiment 1 with 2 participants from Experiment 1 and an additional participant. Results of Experiment 2 also indicated that the increased alertness levels accompanying provision of training were not a function of the participants simply being in an inactive environment prior to training. Results of Experiment 3 indicated that alertness of an additional participant increased through provision of another training intervention, involving a systematic preference assessment. Responses during the preference assessment appeared to be unrelated to previously existing alertness levels. These findings suggest the need for caution when considering the withholding of scheduled training because an individual appears to be nonalert. 相似文献
857.
Verena H. Menec Raymond P. Perry C. Ward Struthers Dieter J. Schonwetter Frank J. Hechter Brila L. Eichholz 《Journal of applied social psychology》1994,24(8):675-701
Attributional retraining appears to be an effective remedial intervention for college students. However, the potential moderating effects of student and classroom characteristics have not yet been investigated systematically. In two studies, attributional retraining was provided to low- and high-risk students, followed by a videotaped lecture presented by either an ineffective or effective instructor. Attributional retraining enhanced achievement on a lecture-based achievement test only when combined with effective teaching, improving the achievement of students who had previously performed poorly (Experiment l), and of low-achieving externals (Experiment 2). The intervention provided no advantage for previously successful students and low-achieving internals. Moreover, attributional retraining induced a more internal attribution profile in students with an external locus, and increased expectations of future success in both externals and internals, but again only when students also received effective instruction. These results suggest that contextual factors related to the classroom, such as quality of instruction, and individual differences have to be considered when developing attributional retraining programs. 相似文献
858.
859.
ABSTRACT This investigation used data from Loehlin and Nichols's (1976) study of over 800 sets of twins to examine evidence for the heritability of three facets of empathy: empathic concern, personal distress, and perspective taking. Expert judges first identified sets of adjectives, included within Loehlin and Nichols's original data, which reflected each empathy construct; these items were then validated in an independent sample. Comparisons of the responses given to these items by identical and fraternal twins in the Loehlin and Nichols investigation revealed evidence of significant heritability for characteristics associated with the two affective facets of empathy—empathic concern and personal distress—but not for the nonaffective construct of perspective taking. This pattern is consistent with the view that temperamental emotionality may underlie the heritability of affective empathy. 相似文献
860.
A historical antagonism between proponents of qualitative methods and quantitative methods has prevented recognition of the benefits to be gained by employing both methods (that is, a multi-method approach) during the same study or program of studies. Increasingly, family therapy researchers have begun to recognize the value of a multi-method approach in bridging the current gaps among theory, research, and practice. However, current writings have yet to move beyond the discussion stage. This article proposes a bidirectional continuum that includes both qualitative and quantitative methods. An ethnographic content analysis approach is presented to illustrate the procedural stages of this continuum. The article ends with a discussion of the challenges in carrying out a bidirectional, multi-method approach and the potential contributions that an integrative research methodology will give both researchers and clinicians. 相似文献