全文获取类型
收费全文 | 50715篇 |
免费 | 1958篇 |
国内免费 | 28篇 |
出版年
2019年 | 638篇 |
2018年 | 887篇 |
2017年 | 953篇 |
2016年 | 951篇 |
2015年 | 714篇 |
2014年 | 795篇 |
2013年 | 3992篇 |
2012年 | 1404篇 |
2011年 | 1538篇 |
2010年 | 974篇 |
2009年 | 955篇 |
2008年 | 1321篇 |
2007年 | 1307篇 |
2006年 | 1183篇 |
2005年 | 1041篇 |
2004年 | 960篇 |
2003年 | 1001篇 |
2002年 | 973篇 |
2001年 | 1798篇 |
2000年 | 1744篇 |
1999年 | 1272篇 |
1998年 | 560篇 |
1997年 | 475篇 |
1996年 | 488篇 |
1992年 | 1077篇 |
1991年 | 1044篇 |
1990年 | 996篇 |
1989年 | 939篇 |
1988年 | 928篇 |
1987年 | 892篇 |
1986年 | 870篇 |
1985年 | 939篇 |
1984年 | 742篇 |
1983年 | 614篇 |
1982年 | 472篇 |
1981年 | 478篇 |
1979年 | 769篇 |
1978年 | 563篇 |
1977年 | 508篇 |
1976年 | 486篇 |
1975年 | 651篇 |
1974年 | 737篇 |
1973年 | 793篇 |
1972年 | 637篇 |
1971年 | 577篇 |
1970年 | 553篇 |
1969年 | 548篇 |
1968年 | 691篇 |
1967年 | 616篇 |
1966年 | 636篇 |
排序方式: 共有10000条查询结果,搜索用时 356 毫秒
831.
The Threat Index and the Death Anxiety Scale were administered to 228 subjects. Based on the high/low criterion scores, 105 subjects were assigned to the following four groups: (a) high death threat/high death anxiety, (b) high death threat/low death anxiety, (c) low death threat/high death anxiety, and (d) low death threat/low death anxiety. During the experimental phase of the study, subjects viewed a filmstrip on death rituals in various cultures. A recall test was then administered. Results indicated no significant group differences on recall performance. Initial no-show rates for the second part of the experiment were observed in the four groups reflecting a significant negative relationship between death anxiety and initial no-show rates. The possibility of defensive responding on the Death Anxiety Scale was suggested. 相似文献
832.
Effects of delayed conditioned reinforcement in chain schedules. 总被引:3,自引:3,他引:0
The contingency between responding and stimulus change on a chain variable-interval 33-s, variable-interval 33-s, variable-interval 33-s schedule was weakened by interposing 3-s delays between either the first and second or the second and third links. No stimulus change signaled the delay interval and responses could occur during it, so the obtained delays were often shorter than the scheduled delay. When the delay occurred after the initial link, initial-link response rates decreased by an average of 77% with no systematic change in response rates in the second or third links. Response rates in the second link decreased an average of 59% when the delay followed that link, again with little effect on response rates in the first or third links. Because the effect of delaying stimulus change was comparable to the effect of delaying primary reinforcement in a simple variable-interval schedule, and the effect of the unsignaled delay was specific to the link in which the delay occurred, the results provide strong evidence for the concept of conditioned reinforcement. 相似文献
833.
Keller FS 《Journal of the experimental analysis of behavior》1987,48(3):453-455
834.
The self-consciousness scale of Fenigstein, Scheier, and Buss (1975) was subjected to internal and external consistency tests based on the classical test theory model. The scale was found to have five underlying dimensions: two for private self-consciousness (viz., self-reflectiveness and internal state awareness), two for public self-consciousness, and one for social anxiety. The confirmatory factor analysis procedures employed by Burnkrant and Page (1984) are shown to be fallible as indicators of unidimensionality. Theoretical implications of newly identified dimensions in the public self-consciousness subscale are discussed. 相似文献
835.
Invariance in the MMPI's component structure 总被引:1,自引:0,他引:1
I H Bernstein G Teng B D Grannemann C P Garbin 《Journal of personality assessment》1987,51(4):522-531
Bernstein and Garbin (1985b) suggested that the Minnesota Multiphasic Personality Inventory's major clinical scales (excluding Scales ? and 5) can be approximated by an oblique three-component structure: (a) Profile Elevation, (b) Test-taking Attitudes, and (c) Optimism-Pessimism, collectively termed the salient weight model. In this study, we found that both this model and the MMPI's principal component structure remain invariant across race, sex, and, as previously noted, context of testing (job applicants vs. inmates in correctional institutions). We further noted that several alternative definitions of Profile Elevation provide equally satisfactory representation of the relations among the scales. This factor invariance is necessary, but not sufficient, for the MMPI to be viewed as unbiased. 相似文献
836.
Relative allocation on concurrent schedules can depend on schedule parameters when behavioral parameters are constant 总被引:1,自引:1,他引:0
下载免费PDF全文
![点击此处可从《Journal of the experimental analysis of behavior》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Houston AI McNamara JM Sumida BH 《Journal of the experimental analysis of behavior》1987,47(1):127-131
We develop a simple model of switching between the initial links of a concurrent-chain procedure. Behavior is determined by four parameters μ1, μ2, q1, and q2. The first two are the basic rates of switching from Schedule 1 and Schedule 2, respectively. The second two are the probabilities of leaving Schedule 1 and Schedule 2 after the corresponding terminal link has been completed. We show that for fixed values of these four parameters, the relative allocation on the initial links may change as a result of changes in initial-link schedules. The effect can be quite large if the switching rates are low. An implication is that relative allocation is not necessarily a good measure of behavior. 相似文献
837.
Little is known about the personal life of John B. Watson, and this interview aims at capturing the personality of the founder of American behaviorism through the eyes of his son, James B. Watson. Today, psychologists and other social scientists increasingly realize that there is an intimate link between the biography of a psychologist and the kind of psychology he or she founds. Thus biographical information about a founding psychologist can help researchers make explicit this essential link. 相似文献
838.
839.
840.