全文获取类型
收费全文 | 45555篇 |
免费 | 952篇 |
国内免费 | 11篇 |
专业分类
46518篇 |
出版年
2018年 | 3741篇 |
2017年 | 3103篇 |
2016年 | 2570篇 |
2015年 | 449篇 |
2014年 | 418篇 |
2013年 | 1905篇 |
2012年 | 1166篇 |
2011年 | 3013篇 |
2010年 | 2897篇 |
2009年 | 1860篇 |
2008年 | 2316篇 |
2007年 | 2701篇 |
2006年 | 577篇 |
2005年 | 689篇 |
2004年 | 656篇 |
2003年 | 602篇 |
2002年 | 563篇 |
2001年 | 677篇 |
2000年 | 707篇 |
1999年 | 535篇 |
1998年 | 288篇 |
1997年 | 305篇 |
1996年 | 302篇 |
1995年 | 270篇 |
1992年 | 506篇 |
1991年 | 457篇 |
1990年 | 465篇 |
1989年 | 427篇 |
1988年 | 443篇 |
1987年 | 420篇 |
1986年 | 461篇 |
1985年 | 442篇 |
1984年 | 405篇 |
1983年 | 359篇 |
1982年 | 258篇 |
1981年 | 281篇 |
1979年 | 411篇 |
1978年 | 332篇 |
1977年 | 301篇 |
1976年 | 308篇 |
1975年 | 360篇 |
1974年 | 438篇 |
1973年 | 474篇 |
1972年 | 353篇 |
1971年 | 369篇 |
1970年 | 336篇 |
1969年 | 366篇 |
1968年 | 438篇 |
1967年 | 405篇 |
1966年 | 421篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
121.
Young and older adults were presented with pictures for study. Their recognition of the information was tested at five retention intervals: immediately, and 48 hr, 1 week, 2 weeks, and 4 weeks later. The main finding of interest was that picture recognition did not show an age-related decline until the 1-week retention interval. 相似文献
122.
123.
The goal of the authors is to (a) create an awareness among counselors about the nature and prevalence of child sexual abuse, (b) examine myths and realities about the topic, and (c) present recommendations for interviewing suspected victims of child sexual abuse. 相似文献
124.
Legal and nonlegal factors influencing the civil commitment recommendations of psychologists and psychiatrists separately and as a whole were investigated using an experimental design. One hundred and seventy-six psychologists and psychiatrists made recommendations for or against commitment for a series of clinical vignettes wherein the five facets of commitment criterion, legal committability, clinical treatability, alternative resources and presence of psychosis were systematically varied. Results revealed that all facets contributed independently and in combination to the commitment decisions of participants as a whole. It was concluded that mental health professionals may utilize a variety of types of information, beyond the relevant legal criteria, in making actual decisions to initiate civil commitments. 相似文献
125.
Roger A. Kendall 《Behavior research methods》1988,20(2):129-136
A hardware-and-software system is described that permits musical-bandwidth signal quantization, monophonic or stereophonic, direct to/from hard disk. The system, which uses an IBM AT or compatible, is cost effective and device independent. Software functions allow for automated aural and graphical signal analyses. Perceptual experiments that use contextual, natural-instrument stimuli, and that take advantage of the immediate and random access provided by this system, are described. 相似文献
126.
This paper describes a method of establishing time intervals at a precision of better than 1 msec, using QuickBASIC 4.0, for running real time experiments on an IBM PC without an 8087 coprocessor. This method is far superior to the TIMER function provided by BASIC, which has a precision of only 110 msec. Also described is an assembly language subroutine that corrects a problem in QuickBASIC 3.0 and QuickBASIC 4.0 to allow proper switching between screens in the CGA text mode for use of the PC as a tachistoscope. A tachistoscope program listing shows how to use the screen subroutine and how to establish intertriai intervals and record reaction times using the timing subroutines. 相似文献
127.
A computer-controlled system that detects spontaneous activity (locomotion and rearing) and diurnal activity rhythms in small animals is described. Automatic recording of subtotals during test periods provides data about habituation (nonassociative learning). The system is relatively inexpensive to construct. Fabricated from highly reliable circuit components, it provides replicable measures that enable comparisons between different experimental treatments to be made using parametric statistics. 相似文献
128.
Gordon W. Russell Sherry L. Di Lullo Dany Di Lullo 《Current psychology (New Brunswick, N.J.)》1988,7(4):312-321
Males were randomly assigned to view either (1) a film clip featuring hockey fights or (2) a film of nonaggressive hockey
action or (3) a no-film control condition after having first been angered or treated politely by an experimental confederate.
The dependent variable was represented by a measure of aggressive mood and a behavioral measure of retaliatory aggression.
Analyses revealed that both angered and nonangered subjects exhibited an increase in aggressive mood following exposure to
the fight film. However, the analysis involving retaliatory aggression against the confederate yielded an anger x film interaction.
While angered subjects were more aggressive than nonangered, only angered subjects retaliated against the confederate after
viewing the fight film. The results were discussed in terms of Berkowitz’s (1974) aggressive cue theory.
A version of this paper was presented at the meeting of the North American Society for the Sociology of Sport, Edmonton, Canada,
November 1987. 相似文献
129.
W. J. Jacobs M. Buttrick D. Kennedy 《Integrative psychological & behavioral science》1988,23(1):29-34
The present study outlines a rapid and sensitive on-the-baseline conditional emotional response (CER) procedure. Using rats as the experimental subject, the method detects delay conditioning, incubation, extinction and spontaneous recovery. In addition, the method detects conditional responding using electric shock ranging from 0.23 to 0.50 mA as the unconditional stimulus. Because of its speed and sensitivity, the method shelters the subject from unnecessary long-term deprivation and pain. 相似文献
130.
This paper suggests that aspects of paranoid character are structured around fantasies of magical and concrete connectedness to objects; these fantasies serve to avoid the terrors of object inconstancy. The authors describe how these fantasies are expressed in the psychoanalytic situation and explore their relation to common paranoid phenomena. The paranoid person must maintain these fantasies of connectedness at all cost or risk experiencing unbearable indifference between self and object. Paradoxically, the sacrifice of self and object boundaries inherent in these fantasies makes object constancy even more difficult to achieve because of the secondary defensive use of anger mobilized to protect the boundaries of the self. 相似文献