全文获取类型
收费全文 | 5935篇 |
免费 | 486篇 |
国内免费 | 10篇 |
出版年
2023年 | 91篇 |
2022年 | 47篇 |
2021年 | 55篇 |
2020年 | 202篇 |
2019年 | 136篇 |
2018年 | 183篇 |
2017年 | 225篇 |
2016年 | 249篇 |
2015年 | 156篇 |
2014年 | 199篇 |
2013年 | 831篇 |
2012年 | 253篇 |
2011年 | 246篇 |
2010年 | 194篇 |
2009年 | 192篇 |
2008年 | 231篇 |
2007年 | 230篇 |
2006年 | 206篇 |
2005年 | 149篇 |
2004年 | 131篇 |
2003年 | 132篇 |
2002年 | 138篇 |
2001年 | 119篇 |
2000年 | 92篇 |
1999年 | 89篇 |
1998年 | 61篇 |
1997年 | 44篇 |
1996年 | 88篇 |
1995年 | 86篇 |
1994年 | 75篇 |
1993年 | 61篇 |
1992年 | 95篇 |
1991年 | 77篇 |
1990年 | 74篇 |
1989年 | 61篇 |
1988年 | 65篇 |
1987年 | 54篇 |
1986年 | 60篇 |
1985年 | 53篇 |
1984年 | 38篇 |
1983年 | 35篇 |
1982年 | 44篇 |
1981年 | 34篇 |
1980年 | 39篇 |
1979年 | 48篇 |
1978年 | 72篇 |
1977年 | 59篇 |
1975年 | 37篇 |
1974年 | 35篇 |
1968年 | 30篇 |
排序方式: 共有6431条查询结果,搜索用时 15 毫秒
221.
As evidence for an hypothesis that pupil size plays an important role in nonverbal communication, Hess (1975) has reported that adults draw in appropriately sized pupils on his happy and angry faces task. However, he did not report a statistical test of his data. In this study, we replicated Hess' research and found congruent with his hypothesis that college students (n = 223) draw in significantly larger pupils on the happy face. 相似文献
222.
Emory L. Cowen PhD Ellis L. Gesten Alice B. Wilson 《American journal of community psychology》1979,7(3):293-303
This study evaluated the effectiveness of the Primary Mental Project (PMHP), a program for early detection and prevention of school adjustment problems. Pre- and postprogram assessments were done with 215 primary-grade children seen in PMHP, usig teacher ratings of problem behaviors and competencies, and child-aide ratings of problems. School mental health professionals judged educational and behavioral changes in project children during the year. Significant across-the board improvements were found on all criterion measures. Modest intercorrelations among criterion change estimates suggested that the observed changes were due to program, rather than halo, effects. PMHP children also improved significantly more than matched, retrospective controls. 相似文献
223.
A microprocessor system can be used both to control aversive conditioning (classical, signaled and Sidman avoidance, and conflict) experiments and to acquire behavioral data in multiple subjects at a fraction of the cost of solid state systems. The software described in this paper can be used to program tones and shocks and count responses, independently, in up to 12 animals simultaneously. 相似文献
224.
Open classrooms with few rules, individualized instruction, and informal class organization present new problems for the application of behavior principles. The effects of three types of teacher aides on student achievement and on-task behavior were studied. Each was compared with a standard no-aide condition. Subjects were 54 third graders in two "open"-style classrooms. The three types of aide, helping adult, disciplinary adult, and helping fifth-grade aide, were compared in a multi-element design with a no-aide control. The helping-adult aide significantly affected the academic output of the class, when compared with the no-aide condition. All aide conditions produced more academic work and on-task behavior than did the standard no-aide condition. 相似文献
225.
226.
Thirty-eight 3-year-old children served as subjects in an investigation of recognition memory in which schematic faces differing only in the orientation of the eyes were employed as stimuli. A pretest was administered to all children, after which the two experimental groups received training in either attention to the distinctive feature of the training stimuli (also schematic faces) by means of a matching task, or in labeling the faces according to how they looked (sleepy, happy, sad, mad) and in using the labels to perform a matching task. After the training session all children were given a posttest on recognition memory of the faces. The verbally trained group obtained significantly higher scores on the posttest than either the feature or control groups. These results indicate that although the children were able to discriminate the faces, evidenced in their ease of performance on the training tasks, they were not able to use this knowledge unless given training in attaching labels to the stimuli, which enabled them to store the information for later use. Results are discussed in light of Gibson's (1969) theory of the developmental interrelations of cognitive processes. 相似文献
227.
An inverse relationship was found between the number of parental visits an institutionalized retarded child received and the distance of the parental home from the institution. When the natural parents were living together, the retarded child was shown to receive more visits than when the child's parents were separated or one parent was deceased. Single mothers were found to be living significantly closer to the facility than single fathers. Single fathers appeared to put more effort into visiting, since they visited just as often as the mothers, but had to travel further distances than the mothers to do so. Visitation frequency followed a curvilinear pattern, decreasing uniformly from 20–60 miles (from 0–20 miles visitation frequency is uniform), and then leveling off. 相似文献
228.
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
229.
230.
Ronald A. Giannetti James H. Johnson Thomas A. Williams Charles F. McCusker 《Behavior research methods》1977,9(2):133-138
Current on-line assessment applications are limited to mimicking instruments designed for paper and pencil. The development of an instrument designed specifically for on-line technology is described. The instrument provides research data on treatment effectiveness, clinical information for treatment planning, and management information for resource allocation. 相似文献