全文获取类型
收费全文 | 27921篇 |
免费 | 331篇 |
国内免费 | 2篇 |
专业分类
28254篇 |
出版年
2021年 | 94篇 |
2020年 | 142篇 |
2019年 | 128篇 |
2018年 | 3614篇 |
2017年 | 2938篇 |
2016年 | 2439篇 |
2015年 | 351篇 |
2014年 | 277篇 |
2013年 | 837篇 |
2012年 | 910篇 |
2011年 | 2699篇 |
2010年 | 2709篇 |
2009年 | 1661篇 |
2008年 | 1968篇 |
2007年 | 2442篇 |
2006年 | 299篇 |
2005年 | 496篇 |
2004年 | 444篇 |
2003年 | 366篇 |
2002年 | 333篇 |
2001年 | 170篇 |
2000年 | 144篇 |
1999年 | 145篇 |
1998年 | 130篇 |
1997年 | 129篇 |
1996年 | 105篇 |
1995年 | 89篇 |
1994年 | 85篇 |
1993年 | 86篇 |
1992年 | 97篇 |
1991年 | 90篇 |
1990年 | 84篇 |
1989年 | 61篇 |
1988年 | 59篇 |
1987年 | 64篇 |
1986年 | 72篇 |
1985年 | 81篇 |
1984年 | 84篇 |
1983年 | 82篇 |
1982年 | 74篇 |
1981年 | 92篇 |
1980年 | 76篇 |
1979年 | 72篇 |
1978年 | 75篇 |
1977年 | 82篇 |
1976年 | 77篇 |
1975年 | 69篇 |
1974年 | 81篇 |
1973年 | 51篇 |
1966年 | 56篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
261.
262.
263.
Thomas Sajwaj 《Journal of applied behavior analysis》1977,10(3):531-540
Several guidelines surrounding the use of behavioral procedures have recently appeared, the best of which is that of the National Association of Retarded Citizens (NARC). Some issues and implications of the establishment of guidelines are briefly reviewed in the context of the NARC guidelines. Issues include the factual versus opinion bases for guidelines and the need to continue the development of explicit behavioral criteria for assessing staff competence. Implications for programs include the impact of guidelines on professional boundaries, administrative decision-making, and budgeting, together with the dangers of expanding the regulatory bureaucracy. Several miscellaneous impacts are noted, including a potential for curbing innovative behavioral technology. 相似文献
264.
265.
Thomas M Ostrom 《Journal of experimental social psychology》1977,13(5):492-503
Research on context effects in impression formation has taken the form of testing competing predictions from the averaging model and the meaning shift model. This between-theory conflict has been unprofitable because neither theory has yet acquired the degree of specificity necessary to generate unequivocal predictions in this area. The research has been useful, however, in identifying each theory's capacity to generate self-contradictory predictions. Future research on this topic can most profitably be addressed to resolving these within-theory conflicts. 相似文献
266.
Evidence from four studies demonstrates that social observers tend to perceive a “false consensus” with respect to the relative commonness of their own responses. A related bias was shown to exist in the observers' social inferences. Thus, raters estimated particular responses to be relatively common and relatively unrevealing concerning the actors' distinguishing personal dispositions when the responses in question were similar to the raters' own responses; responses differing from those of the rater, by contrast, were perceived to be relatively uncommon and revealing of the actor. These results were obtained both in questionnaire studies presenting subjects with hypothetical situations and choices and in authentic conflict situations. The implications of these findings for our understanding of social perception phenomena and for our analysis of the divergent perceptions of actors and observers are discussed. Finally, cognitive and perceptual mechanisms are proposed which might account for distortions in perceived consensus and for corresponding biases in social inference and attributional processes. 相似文献
267.
Thomas R. Kratochwill 《Journal of School Psychology》1977,15(3):239-249
Single subject (N=1) research strategies deserve increased emphasis in the training of school psychologists. Single subject methodology has demonstrated credibility in research and in monitoring effects of professional interventions, but school psychology programs have typically not provided systematic training in this area. This paper suggests that N=1 research paradigms offer a promising supplement and, in some cases, an alternative to traditional large N between group strategies in school-based research; it reviews some examples of N=1 research design and methodology; it discusses some advantages and limitations of N=1 research strategies; and it argues that school psychology training programs must train graduate students in N=1 research and encourage this form of research methodology in practice. 相似文献
268.
269.
Two experiments were conducted to examine laterality differences and practice effects under various central backward masking conditions. Critical stimulus onset asynchrony (SOA) was determined for subjects on 3 consecutive days using single letters as target stimuli (TS) and a pattern masking stimulus (MS). There was a right visual field (RVF) advantage on Day 1 but no difference between the visual fields on following days. The decline in the RVF advantage appeared to be dependent upon prior experience with laterally located letters, to be independent of initial experience with a particular set of letters, and to be more pronounced for females than for males. In addition, large improvements in performance were found, particularly between the first and second testing sessions. These practice effects were discussed in terms of the possible development of strategies for enhancing TS features or attenuating MS features. 相似文献
270.
Hoben Thomas 《Psychometrika》1977,42(2):199-206
Individuals are classified in a cross-classification table where two behavioral observations on each individual determine the classification. The problem is to test certain structural models assumed to underlie the cross-classified observations. A minimum chi-square test procedure is proposed. 相似文献