全文获取类型
收费全文 | 21791篇 |
免费 | 854篇 |
国内免费 | 11篇 |
出版年
2019年 | 257篇 |
2018年 | 369篇 |
2017年 | 391篇 |
2016年 | 412篇 |
2015年 | 320篇 |
2014年 | 349篇 |
2013年 | 1737篇 |
2012年 | 623篇 |
2011年 | 641篇 |
2010年 | 386篇 |
2009年 | 362篇 |
2008年 | 490篇 |
2007年 | 546篇 |
2006年 | 465篇 |
2005年 | 441篇 |
2004年 | 416篇 |
2003年 | 407篇 |
2002年 | 436篇 |
2001年 | 742篇 |
2000年 | 710篇 |
1999年 | 538篇 |
1998年 | 214篇 |
1996年 | 219篇 |
1995年 | 197篇 |
1992年 | 449篇 |
1991年 | 440篇 |
1990年 | 425篇 |
1989年 | 400篇 |
1988年 | 418篇 |
1987年 | 375篇 |
1986年 | 387篇 |
1985年 | 386篇 |
1984年 | 306篇 |
1983年 | 274篇 |
1982年 | 204篇 |
1981年 | 205篇 |
1979年 | 349篇 |
1978年 | 253篇 |
1977年 | 213篇 |
1976年 | 198篇 |
1975年 | 280篇 |
1974年 | 354篇 |
1973年 | 366篇 |
1972年 | 288篇 |
1971年 | 283篇 |
1970年 | 281篇 |
1969年 | 252篇 |
1968年 | 349篇 |
1967年 | 307篇 |
1966年 | 284篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
301.
Mark H. Lewis Alfred A. Baumeister Richard B. Mailman 《Journal of applied behavior analysis》1987,20(3):253-258
A perceptual reinforcement theory of stereotyped movements is advanced by Lovaas, Newsom, and Hickman (1987) in an effort to integrate a number of diverse observations about the origins and maintenance of this behavior. We, in turn, argue that the theory, as presented, is logically flawed and fails to take into account important biological findings and theory concerning pathological stereotyped acts. An alternative theory, derived primarily from neurological concepts, is briefly described. 相似文献
302.
Correspondences between verbal responding (saying) and nonverbal responding (doing) may be organized in terms of the classes of verbal/nonverbal relations into which particular instances of verbal/nonverbal response sequences can enter. Contingency spaces, which display relations among events in terms of the probability of one event given or not given another, have been useful in analyses of nonverbal behavior. We derive a taxonomy of verbal/nonverbal behavior relations from a contingency space that takes into account two conditional probabilities: the probability of a nonverbal response given a verbal response and that probability given the absence of the verbal response. For example, positive correspondence may be said to exist as a response class when the probability of doing is high given saying but is otherwise low. Criteria for other generalized classes, including negative correspondence, follow from this analysis. 相似文献
303.
304.
Members of the editorial boards of the Journal of the American Psychoanalytic Association, Psychoanalytic Quarterly, and Psychoanalytic Inquiry, plus selected analysts from Canada, France, and England, were asked how they presented the fundamental rule to their analysands and what considerations led to their choice of initial guidelines. Forty-nine of eight-three analysts responded to the survey. The respondents described diversity in phrasing of the fundamental rule, the time in analysis when the guidelines are given, and the reasons for the practice they follow. The method each chose appears to reflect the differing conceptions analysts have of the analytic process. Two major trends emerged: either our respondents emphasized delineating a work or functional framework or contract, or they emphasized establishing an attitude or spirit of cooperation, mutuality and work sharing. In each group respondents differed as to whether they favored minimal or more lengthy instructions. They also differed as to whether they followed a consistent approach or one tailored to the needs of the individual analysand. A source of tension lay in an inclination either to remain in the tradition set by Freud or to experiment with different phrasings and timings. The authors give their reasons for choosing to give explicit instructions, requesting associational material beyond thoughts and feelings, and describing resistance as inevitable and a potential source of insight. 相似文献
305.
306.
307.
This study examines the relationship between the age of unmarried fathers and their self-concept and anxiety level. A total of 24 unmarried fathers (12 adolescents and 12 adults) comprised the sample. No significant differences were found between adolescent and adult fathers on self-concept or anxiety level. Findings are discussed with regard to the current status of research on adolescent fathers. 相似文献
308.
309.
310.