全文获取类型
收费全文 | 40139篇 |
免费 | 1648篇 |
国内免费 | 80篇 |
专业分类
41867篇 |
出版年
2020年 | 542篇 |
2019年 | 643篇 |
2018年 | 891篇 |
2017年 | 968篇 |
2016年 | 943篇 |
2015年 | 633篇 |
2014年 | 795篇 |
2013年 | 3282篇 |
2012年 | 1458篇 |
2011年 | 1463篇 |
2010年 | 937篇 |
2009年 | 840篇 |
2008年 | 1302篇 |
2007年 | 1281篇 |
2006年 | 1136篇 |
2005年 | 978篇 |
2004年 | 903篇 |
2003年 | 852篇 |
2002年 | 851篇 |
2001年 | 1191篇 |
2000年 | 1149篇 |
1999年 | 881篇 |
1998年 | 389篇 |
1997年 | 384篇 |
1996年 | 346篇 |
1995年 | 359篇 |
1994年 | 347篇 |
1993年 | 353篇 |
1992年 | 736篇 |
1991年 | 654篇 |
1990年 | 707篇 |
1989年 | 610篇 |
1988年 | 644篇 |
1987年 | 601篇 |
1986年 | 609篇 |
1985年 | 552篇 |
1984年 | 502篇 |
1983年 | 481篇 |
1979年 | 570篇 |
1978年 | 395篇 |
1975年 | 450篇 |
1974年 | 493篇 |
1973年 | 529篇 |
1972年 | 399篇 |
1971年 | 392篇 |
1970年 | 349篇 |
1969年 | 402篇 |
1968年 | 476篇 |
1967年 | 430篇 |
1966年 | 360篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
261.
John L. Romano 《Journal of counseling and development : JCD》1992,71(2):199-202
The importance of educating students about stress and stress management is emphasized, because students will confront stressors throughout their life span. In this article the author summarizes major stress theories and shows how stress theory and stress management strategies can be integrated into existing school curricula. 相似文献
262.
Charles L. Spirrison Keith A. Noland Luke B. Savoie 《Journal of psychopathology and behavioral assessment》1992,14(1):65-79
The Treatment Evaluation Inventory (TEI), a frequently used measure of treatment acceptability, was used by 164 undergraduates to rate the acceptability of each of the following treatments: differential reinforcement of other behavior, exclusionary time-out, overcorrection, medical restraint, contingent electric shock, and physical restraint. TEI ratings of each treatment type were grouped separately, variance-covariance matrices were formed and compared, and data were subjected to factor analysis. The results indicated that the factor structure of the TEI varied with the treatment it was used to evaluate. Item analysis of the TEI indicated a high degree of internal consistency, although item-total correlations varied between rated treatments. The findings suggest that although the TEI is a reliable instrument, sensitive assessment of the treatment acceptability construct probably requires multidimensional measurement. 相似文献
263.
Professional orientation courses typically provide important knowledge about professional organizations, standards, credentials, and roles. Knowledge alone, however, may not instill a sense of professionalism in counseling students. This article describes one teaching method that seems to foster behaviors and attitudes that characterize professionalism. 相似文献
264.
Free-recall and multiple-choice measures of memory for landmarks, sequential order, turns, and route configurations were obtained from younger and older adults after they viewed slides of 2 overlapping routes. Instructions focused attention on either the contents of the slides or on the course of the path; a control condition provided no orientational instructions. Half the subjects viewed maplike diagrams of the joint spatial configuration. Age interacted with instruction only for multiple-choice tests of landmark memory. Age interacted with diagram for each of the other 3 route memory components, although the generality of this interaction across instruction condition depended on whether free-recall or multiple-choice tests were used. The results suggest that route memory may involve both scene and layout representation, which may be differentially sensitive to age and presentational variables. 相似文献
265.
This study examined whether chronic physical exercise activity is associated with better neurocognitive performance in older adults. One hundred five men participated in 1 of 3 age groups (18-28, 35-45, and 60-73). For each age group, subjects were classified as high or low in fitness on the basis of self-reported activity levels and the results of a submaximal bicycle ergometer test. A comprehensive battery of neuropsychological tests was administered to each subject, and older subjects scored significantly lower than the younger groups on most tests. Significant differences between high- and low-fit subjects were found only on tasks with heavy visuospatial demands, and these differences were most notable in the older adult group. These findings suggest that participation in aerobic exercise activity selectively preserves some cognitive functions that normally decline with age. The benefits of activity appear to be most evident on tasks that require visuospatial processing. 相似文献
266.
Gerontologists have long been concerned with the impact of individual-difference factors on memory. This study used a large sample (N = 2,495) of adult volunteers aged 18 to 90 years to determine if a set of individual-difference variables--vocabulary, education, depression, gender, marital status, and employment status--mediates the effects of aging on a wide range of laboratory-analogue tests of everyday memory. The data indicated that age was consistently the most significant predictor of memory performance, followed by vocabulary and gender. Vocabulary totally mediated age effects on a prose memory measure, and partial mediation of aging effects--primarily by vocabulary and gender--was observed on 5 other memory tests. These data suggest that when health samples of volunteers serve as research subjects, these individual differences can affect some memory test scores, but age remains the best overall predictor of memory performance. 相似文献
267.
268.
269.
270.
Randolph W. Parks Daniel S. Levine Debra L. Long David J. Crockett Irene E. Dalton Herbert Weingartner Paul Fedio Kerry L. Coburn Gil Siler Jane R. Matthews Robert E. Becker 《Neuropsychology review》1992,3(2):213-233
Neural networks can be used as a tool in the explanation of neuropsychological data. Using the Hebbian Learning Rule and other such principles as competition and modifiable interlevel feedback, researchers have successfully modeled a widely used neuropsychological test, the Wisconsin Card Sorting Test. One of these models is reviewed here and extended to a qualitative analysis of how verbal fluency might be modeled, which demonstrates the importance of accounting for the attentional components of both tests. Difficulties remain in programming sequential cognitive processes within a parallel distributed processing (PDP) framework and integrating exceedingly complex neuropsychological tests such as Proverbs. PDP neural network methodology offers neuropsychologists co-validation procedures within narrowly defined areas of reliability and validity. 相似文献