全文获取类型
收费全文 | 65353篇 |
免费 | 2599篇 |
国内免费 | 22篇 |
出版年
2020年 | 683篇 |
2019年 | 910篇 |
2018年 | 1188篇 |
2017年 | 1291篇 |
2016年 | 1293篇 |
2015年 | 911篇 |
2014年 | 1139篇 |
2013年 | 5010篇 |
2012年 | 2074篇 |
2011年 | 2127篇 |
2010年 | 1322篇 |
2009年 | 1275篇 |
2008年 | 1890篇 |
2007年 | 1874篇 |
2006年 | 1735篇 |
2005年 | 1538篇 |
2004年 | 1473篇 |
2003年 | 1356篇 |
2002年 | 1406篇 |
2001年 | 1982篇 |
2000年 | 1853篇 |
1999年 | 1453篇 |
1998年 | 706篇 |
1997年 | 639篇 |
1992年 | 1183篇 |
1991年 | 1092篇 |
1990年 | 1133篇 |
1989年 | 1042篇 |
1988年 | 1069篇 |
1987年 | 1015篇 |
1986年 | 1037篇 |
1985年 | 1039篇 |
1984年 | 885篇 |
1983年 | 845篇 |
1982年 | 654篇 |
1981年 | 631篇 |
1979年 | 1011篇 |
1978年 | 724篇 |
1977年 | 618篇 |
1976年 | 638篇 |
1975年 | 843篇 |
1974年 | 906篇 |
1973年 | 956篇 |
1972年 | 749篇 |
1971年 | 723篇 |
1970年 | 681篇 |
1969年 | 751篇 |
1968年 | 896篇 |
1967年 | 793篇 |
1966年 | 722篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
962.
Contingengy-specifying stimuli (CSSs) can function differently than discriminative stimuli. Rather than evoking behavior due to a history of discrimination training, they alter the function of other stimuli and, therefore, the behavioral relations involving those stimuli. CSSs can alter the evocative function of discriminative stimuli, establishing operations, and conditional stimuli, as well as the efficacy of reinforcing and punishing stimuli and of stimuli that can function in second-order respondent conditioning. The concept of function-altering CSSs has implications for such areas of interest as stimulus equivalence, the terminology involving "rules" and "rule-governed behavior," and the way in which behavior analysts view the effects of such basic processes as reinforcement and punishment. 相似文献
963.
964.
965.
966.
The authors review the literature concerning the effects of physical fitness on various measures of personality and offer specific suggestions for future research in this area. 相似文献
967.
Grantham and Gordon (1986) contended that preference was inadequately understood as a construct and that a more incisive conceptualization was needed to promote research and theoretical considerations. We contend that their offering adds to the terminological confusion. A brief critique of Grantham and Gordon's notions and an alternative conceptualization and schema are offered. 相似文献
968.
969.
Toward a predictive model of suicidal ideation and behavior: some preliminary data in college students 总被引:4,自引:0,他引:4
Within a multivariate statistical design, the relationship of various interpersonal, emotional, and cognitive variables to suicidal ideation and behavior in college students was examined. A total of 158 subjects (58 males, 100 females) completed self-report measures of life stress, faulty cognitions, loneliness, depression, hopelessness, family cohesiveness, adaptive reasons for living, and suicidal ideation and behavior. The results of a multiple-regression analysis, forward-inclusion algorithm, indicated that a predictive equation consisting of loneliness, irrational beliefs, and low adaptive reasons for living best accounted for suicidal behavior scores. To determine the basic structures and power of the predictor variables under study, a factor analysis and composite regression were employed, resulting in a predictive equation consisting of three factors: Social/Emotional Alienation, Cognitive Distortions, and Deficient Adaptive Resources. Results are discussed in terms of an interactional model of suicidal behavior. 相似文献
970.
Counselors can play a vital role in addressing the needs of increasing numbers of older persons subject to and at risk for abuse from their families, caretakers, and themselves. 相似文献