全文获取类型
收费全文 | 46391篇 |
免费 | 1172篇 |
国内免费 | 13篇 |
出版年
2021年 | 218篇 |
2020年 | 372篇 |
2019年 | 409篇 |
2018年 | 3923篇 |
2017年 | 3234篇 |
2016年 | 2766篇 |
2015年 | 618篇 |
2014年 | 643篇 |
2013年 | 2405篇 |
2012年 | 1538篇 |
2011年 | 3261篇 |
2010年 | 3099篇 |
2009年 | 2087篇 |
2008年 | 2581篇 |
2007年 | 3030篇 |
2006年 | 855篇 |
2005年 | 968篇 |
2004年 | 917篇 |
2003年 | 782篇 |
2002年 | 753篇 |
2001年 | 872篇 |
2000年 | 900篇 |
1999年 | 641篇 |
1998年 | 367篇 |
1997年 | 331篇 |
1996年 | 271篇 |
1995年 | 275篇 |
1994年 | 270篇 |
1993年 | 244篇 |
1992年 | 483篇 |
1991年 | 448篇 |
1990年 | 465篇 |
1989年 | 403篇 |
1988年 | 393篇 |
1987年 | 385篇 |
1986年 | 340篇 |
1985年 | 355篇 |
1984年 | 345篇 |
1983年 | 296篇 |
1982年 | 264篇 |
1981年 | 242篇 |
1980年 | 222篇 |
1979年 | 320篇 |
1978年 | 275篇 |
1977年 | 230篇 |
1976年 | 223篇 |
1975年 | 251篇 |
1974年 | 302篇 |
1973年 | 280篇 |
1968年 | 226篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
Michael Wirsching 《Psychotherapeut》1998,43(2):124-129
Ohne Zusammenfassung 相似文献
12.
Leigh M. Riby Timothy J. Perfect Brian T. Stollery 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》2004,57(2):241-267
Previous research demonstrates that older adults are poor at dual tasking, but there is less agreement on whether their decrement is worse than that predicted from single-task performance. This study investigated whether task domain moderates dual-task costs in old age. In two experiments, young and older adults retrieved either previously learned associates (episodic retrieval) or overlearned category members (semantic retrieval) under single or working-memory load conditions, using cued recall (Experiment 1) and recognition (Experiment 2) procedures. In both experiments the proportional costs of dual tasking were age invariant for semantic retrieval but were particularly marked for episodic retrieval, although the size of the age effect was reduced in recognition compared to cued recall. The data suggest that age effects in dual tasking may be domain specific. 相似文献
13.
L T Connor D A Balota J H Neely 《Journal of experimental psychology. Learning, memory, and cognition》1992,18(3):544-554
Experiment 1 replicated Yaniv and Meyer's (1987) finding that lexical decision and episodic recognition performance was better for words previously yielding high-accessibility levels (a combination of feeling-of-knowing and tip-of-the-tongue ratings) in comparison with those yielding low-accessibility levels in a rare word definition task. Experiment 2 yielded the same pattern even though lexical decisions preceded accessibility estimates by a full week. Experiment 3 dismissed the possibility that the Experiment 2 results may have been due to a long-term influence from the lexical decision task to the rare word judgment task. These results support a model in which Ss (a) retrieve topic familiarity information in making accessibility estimates in the rare word definition task and (b) use this information to modulate lexical decision performance. 相似文献
14.
Thomas A Wills Velma McBride Murry Gene H Brody Frederick X Gibbons Meg Gerrard Carmella Walker Michael G Ainette 《Health psychology》2007,26(1):50-59
OBJECTIVE: To test a theoretical model of how ethnic pride and self-control are related to risk and protective factors. DESIGN: A community sample of 670 African American youth (mean age = 11.2 years) were interviewed in households. MAIN OUTCOME MEASURES: Measures of cigarette smoking, alcohol use, and sexual behavior (lifetime to past month). RESULTS: Structural modeling analyses indicated parenting was related to self-control and self-esteem, and racial socialization was related to ethnic pride. Self-control and self-esteem variables were related to levels of deviance-prone attitudes and to perceptions of engagers in, or abstainers from, substance use and sexual behavior. The proximal factors (behavioral willingness, resistance efficacy, and peer behavior) had substantial relations to the criterion variables. Participant gender and parental education also had several paths in the model. Results were generally similar for the 2 outcome behaviors. CONCLUSIONS: In this population, self-esteem and self-control are related to parenting approaches and have pathways to attitudes and social perceptions that are significant factors for predisposing to, or protecting against, early involvement in substance use and sexual behavior. 相似文献
15.
16.
17.
T. O'Hagan 《亚里斯多德学会增刊》1998,72(1):75-76
This paper was not available at the time of going to press. It will be published in a future volume of the Proceedings of The Aristotelian Society. 相似文献
18.
The three reliability and two construct validity studies presented here represent the first psychometric research on the commercially successful and popular Hartman Color Code Personality Profile. The reliability studies found high reliability after 3 and 6 weeks. The construct validity studies substantiated that the Color Code assesses some personality traits. The magnitude of the error variance suggests caution, however, in using the Color Code classifications at the individual level. 相似文献
19.
20.
Michael J. Kelley 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》1986,38(1):97-110
The study supplies further evidence that non-associative effects and temporal-spatial similarities between certain combinations of cue and consequence cannot explain all instances of stimulus-reinforcer interactions. Pigeons were trained to press a treadle in the presence of a discriminative compound stimulus either to avoid shock or to obtain a food reinforcer. The compound stimulus was composed of diffuse tone and light cues which had identical temporal patterns of onset, duration and offset. With the avoidance schedule the auditory cue acquired more control than the visual cue; however, when food was the reinforcer, the visual cue exerted more control. This pattern of stimulus control on the appetitive schedule did not change if random shocks were also added, even though these shocks were equal in density to the food presentations and equal in magnitude to those used for the avoidance schedule. Other changes in the appetitive procedure, such as making the tone spatially contiguous with food and removing the light in the food hopper, also failed to alter the relative control by the different cues. Prior training with a food reinforcer did not produce any change in the relative control by the two cues when the birds were retrained on the shock-avoidance schedule. The results suggest that some frequently stated alternatives to selective associability are not adequate explanations of this instance of a stimulus-reinforcer interaction. 相似文献