全文获取类型
收费全文 | 3654篇 |
免费 | 246篇 |
国内免费 | 2篇 |
专业分类
3902篇 |
出版年
2023年 | 41篇 |
2022年 | 31篇 |
2021年 | 44篇 |
2020年 | 95篇 |
2019年 | 131篇 |
2018年 | 140篇 |
2017年 | 161篇 |
2016年 | 149篇 |
2015年 | 106篇 |
2014年 | 140篇 |
2013年 | 485篇 |
2012年 | 187篇 |
2011年 | 217篇 |
2010年 | 118篇 |
2009年 | 138篇 |
2008年 | 190篇 |
2007年 | 133篇 |
2006年 | 145篇 |
2005年 | 128篇 |
2004年 | 142篇 |
2003年 | 123篇 |
2002年 | 108篇 |
2001年 | 43篇 |
2000年 | 47篇 |
1999年 | 26篇 |
1998年 | 41篇 |
1997年 | 39篇 |
1996年 | 35篇 |
1995年 | 23篇 |
1994年 | 21篇 |
1993年 | 15篇 |
1992年 | 27篇 |
1991年 | 20篇 |
1990年 | 21篇 |
1989年 | 21篇 |
1988年 | 19篇 |
1987年 | 25篇 |
1986年 | 27篇 |
1985年 | 24篇 |
1984年 | 31篇 |
1983年 | 33篇 |
1982年 | 22篇 |
1981年 | 16篇 |
1980年 | 27篇 |
1979年 | 20篇 |
1978年 | 16篇 |
1977年 | 20篇 |
1976年 | 17篇 |
1975年 | 8篇 |
1974年 | 9篇 |
排序方式: 共有3902条查询结果,搜索用时 0 毫秒
71.
A case of agraphia is documented which resembles in every respect the pattern of results obtained in deep dyslexia. Pronounceable pseudowords could not be written to dictation while concrete nouns were more accurately transcribed than abstract nouns. Verbs and functions words were written very poorly and oral spelling was impaired. In addition, semantic paragraphias were present. In contrast to the deficit observed in writing, no such impairment was found for reading. It is concluded that writing can occur without phoneme-grapheme conversion and that codes generated for reading are functionally distinct from codes generated for writing. 相似文献
72.
Andrew S McGowan 《Journal of Vocational Behavior》1982,20(3):294-303
This study was designed to investigate the predictive efficiency of the primary and secondary summary codes of Holland's Self-Directed Search for Educational and Vocational Planning (SDS) in terms of expressed career choice 4 years later. In 1974, 126 voiationally undecided high school seniors were given the SDS, followed by a revision of Trow's Vocational Choice Inventory (VCI) in which they were asked to express a career choice or a state of indecision. In 1978, this same group was mailed a posttest VCI; the responses of 84 subjects were then analyzed. The subjects' expressed career choices on both the 1974 and 1978 VCI were compared to the primary and secondary summary codes on the SDS which they had taken in 1974. Inspection of the responses indicated that 21.4% of the subjects had made career choices predicted by their primary summary codes and 51.2% had made vocational choices found among their secondary summary codes. Only 27.4% chose a career area not predicted by their 1974 SDS results. The results of this study appear to lend support to the validity of using the SDS summary codes to predict eventual career decisions. 相似文献
73.
Four experiments examined the effects of noise on semantic memory. The first was a replication of a study by Eysenck, in which subjects had to retrieve words beginning with particular letters which were also instances of specified categories (e.g. Fruit-A). Whereas Eysenck had found that both noise and activation level of the individual interacted with the dominance of the category instance possible, the present study failed to repeat the findings.The remaining experiments used a paper-and-pencil modification of Eysenck's technique; the second and third were successful in showing interactions of dominance and noise, but in opposite directions. The two experiments differed only in the previous experience of the subjects. In a fourth experiment, the same materials were presented in a different sequence, mixing dominant and non-dominant instances. The interaction then disappeared again.These experiments therefore suggest that the effect of noise on memory is not a uniform and mechanical exaggeration of dominance, but depends on the retrieval strategies being employed by the particular subject. 相似文献
74.
75.
76.
This study was designed with two purposes in mind: (1) to measure the effectiveness of Holland's Self-Directed Search for Educational and Vocational Planning (SDS); and (2) to test the validity of Goodstein's (Theories of Counseling. B. Stefflure, Ed., 1965) hypothesis that career indecision and indecisiveness are differentially related to anxiety and vocational maturity. A total of 66 high school males and 60 high school females were randomly assigned to experimental and control groups and tested for anxiety and vocational maturity levels; the experimental subjects were given the SDS. Statistical analysis indicated that the SDS was an effective instrument in reducing career indecision; Goodstein's hypothesis was not supported by the results of the study. 相似文献
77.
Two recurring problems hampering investigations of muscular activity patterns during locomotion are electrical “noise” and movement artifact in the electromyographic (EMG) signal and proper synchronization of behavioral events to the EMG. A relatively simple technique for achieving these ends is presented. Vigorous locomotor movements of unrestrained animals are recorded on 16-mm film and synchronized with one or more EMGs from selected muscles with little electrical noise or movement artifact interference. The system employs telemetry which is compared to hardwire techniques. 相似文献
78.
Andrew R. Davidson James J. Jaccard Harry C. Triandis Maria Luisa Morales Rogelio Diaz-Guerrero 《International journal of psychology》1976,11(1):1-13
A model for the prediction of behavior from attitudinal components, developed by Triandis, was tested with samples of U.S. and Mexican women, and with fertility relevant behaviors. The elements of the model are etic, but the operationalizations of the various variables were done emically. Results support the model in both cultures. While the predictive utility of the model is equivalent in two cultures, there are social class differences on which component of the model is most emphasized. The U.S. upper-middle-class sample and the Mexican upper-middle-class sample emphasized the person's attitude toward the act, while the Mexican lower SES (socio-economic status) sample emphasized the person's normative beliefs (moral obligations). 相似文献
79.
80.
Jason T Siegel Eusebio M Alvaro William D Crano Andrew Lac Sarah Ting Sara Pace Jones 《Health psychology》2008,27(2):170-178
OBJECTIVE: Approximately 6,000 Americans die every year awaiting an organ transplant. Health promotion interventions may alleviate the shortage of viable organs by increasing the number of registered organ donors. This study is the first to evaluate the differential effectiveness of various organ donor messages in naturalistic settings. DESIGN: A 4 (Appeal)x4 (Exemplar)x4 (Location) counterbalanced quasi-experimental design was implemented. MAIN OUTCOME MEASURE: The behavioral outcome measure was the number of individuals who registered to be organ donors at computer kiosks. RESULTS: A number of significant main effects and interactions emerged. Most notably, of the 4 different appeals (counterargument, emotional, motivating action, dissonance), counterargument was by far the most efficacious, especially in academic-type settings (library, university, community college); the emotional appeal was most successful in hospitals. CONCLUSIONS: The findings from this study have implications for both organ donor investigations and health campaign research in general. Statistical interactions highlight the importance of evaluating multiple exemplars in multiple locations for each type of appeal when conducting health campaign research. 相似文献