全文获取类型
收费全文 | 24372篇 |
免费 | 506篇 |
国内免费 | 4篇 |
专业分类
24882篇 |
出版年
2020年 | 275篇 |
2019年 | 270篇 |
2018年 | 446篇 |
2017年 | 397篇 |
2016年 | 420篇 |
2015年 | 281篇 |
2014年 | 416篇 |
2013年 | 1745篇 |
2012年 | 681篇 |
2011年 | 761篇 |
2010年 | 411篇 |
2009年 | 503篇 |
2008年 | 648篇 |
2007年 | 651篇 |
2006年 | 607篇 |
2005年 | 543篇 |
2004年 | 525篇 |
2003年 | 505篇 |
2002年 | 475篇 |
2001年 | 820篇 |
2000年 | 829篇 |
1999年 | 618篇 |
1998年 | 268篇 |
1997年 | 246篇 |
1992年 | 516篇 |
1991年 | 448篇 |
1990年 | 510篇 |
1989年 | 427篇 |
1988年 | 410篇 |
1987年 | 386篇 |
1986年 | 408篇 |
1985年 | 475篇 |
1984年 | 375篇 |
1983年 | 305篇 |
1982年 | 246篇 |
1981年 | 235篇 |
1980年 | 225篇 |
1979年 | 350篇 |
1978年 | 307篇 |
1977年 | 246篇 |
1976年 | 227篇 |
1975年 | 343篇 |
1974年 | 380篇 |
1973年 | 381篇 |
1972年 | 293篇 |
1971年 | 256篇 |
1969年 | 244篇 |
1968年 | 303篇 |
1967年 | 267篇 |
1966年 | 290篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
871.
This article describes the development and initial evaluation of the A-Trait-Perception (ATP) score, a composite predictor for state anxiety. The ATP score is constructed from trait anxiety and situation perception data derived from the Endler Multidimensional Anxiety Scales (EMAS; Endler, Edwards, & Vitelli, 1989). ATP mathematically combines the individual's trait anxiety and situation perception profiles and adjusts these with a multiplier that reflects the individuals' sensitivity to particular types of situational elements in terms of state anxiety inducement. The utility of the resulting composite variable as a predictor of state anxiety was examined in the context of two field studies. Results of both studies indicated that the ATP variable offered a superior prediction of state anxiety, as compared to four individual trait anxiety facets (social evaluation, physical danger, ambiguous and daily routines). The theoretical import of these results is discussed. 相似文献
872.
The effects of alcohol and extended practice on divided attention were investigated using a visual tracking task and an auditory detection task. Subjects performed the tasks with and without alcohol, under single-task (S) and dual-task (D) conditions, both before and after they had received extended practice under single-task conditions without alcohol. Tracking accuracy improved with practice and was impaired under divided-attention conditions but was not affected by alcohol. Speed of detection was impaired by alcohol, improved by practice, and impaired by divided attention. Extended practice did not reduce the influence of alcohol. The effects of both alcohol and practice on speed of detection were significantly greater under dual-task conditions than under single-task conditions. Analysis of detection-task reaction times in terms of relative divided-attention costs, (D-S)/S, showed no effect of alcohol, but a highly significant reduction in costs with extended practice. It is concluded that (1) alcohol and practice can have quantitatively, but not qualitatively, similar effects on speeded performance, and (2) the effect of alcohol is not influenced by the attentional requirements of the task. 相似文献
873.
A symphony of Gustav Mahler becomes a cathartic experience following the death of a beloved goat. 相似文献
874.
In this paper, we describe software that turns a Macintosh computer into an off-the-shelf tool for experiments on visual search. Our design goals included portability (between members of the Macintosh computer family and between various research settings), user-friendliness (equivalent to Macintosh programming standards), flexibility (to allow replication and extension of important experiments on visual search), and adaptability (very short design-to-data and data-to-analysis turnaround times). We describe how the software meets these goals in three major phases of an experiment: stimulus construction, experimental control, and statistical analysis. We then list several landmark studies of visual search that can be easily designed and extended with the software. Finally, we outline plans for expanding the experimental variations that will be supported in future versions of the software. 相似文献
875.
876.
The experiences of 44 group sexual assault victims (multiple offenders, one victim) were compared with 44 individual sexual assault victims (one offender, one victim). Sexual assaults included various degrees of sexual victimization ranging from verbal coercion to rape. Participants were located from among a national sample of 3,187 college women. Group sexual assaults, compared to individual sexual assaults, were in general more violent, involved greater resistance from the victims, and were more likely to be perpetrated by strangers or relatives and to involve an experience which met the legal definition of rape. Group sexual assaults were less likely to involve multiple episodes by the same offender(s). Group sexual assault victims were more likely than individual sexual assault victims to seek police and crisis services, to have contemplated suicide, and to have sought therapy postassault. Despite these differences, the two groups were similar in the amount of drinking and drug use during the assault and their scores on standardized measures of psychological symptoms. 相似文献
877.
ROBERT SADACCA JOHN P. CAMPBELL ANIS. DIFAZIO SHEILA R. SCHULTZ LEONARD A. WHITE 《Personnel Psychology》1990,43(2):367-378
For purposes of selection and classification there are two general reasons for scaling the mean and variance of the utility of performance across jobs. First, if differential utility across jobs does exist, then the payoff from a selection and classification system will be enhanced to the extent that accurate utility values are incorporated in the assignment system. Second, a valid utility metric would permit a more meaningful comparison of the gains achieved by alternative selection and classification procedures. It is argued in this paper that the Army context, and perhaps others, precludes using the dollar metric and estimates of SDy in dollars. Consequently, Project A conducted a relatively long series of exploratory workshops with Army personnel to (a) define the utility issue, (b) pilot test a wide variety of possible scaling methods, and (c) evaluate the methods that seemed most appropriate. On the basis of exploratory analysis, a combined procedure incorporating both an interval estimation and a ratio estimation method was used to estimate the utility of five different performance levels for each of 276 jobs (MOS) in the enlisted personnel system. The psychometric properties of the resulting scale values are analyzed and discussed. 相似文献
878.
THE SOCRATIC METHOD AND PHILOSOPHY FOR CHILDREN 总被引:1,自引:0,他引:1
JOHN P. PORTELLI 《Metaphilosophy》1990,21(1-2):141-161
879.
Nicholas P. Spanos Arthur H. Perlini Louise Patrick Steven Bell Maxwell I. Gwynn 《Journal of research in personality》1990,24(4)
We modified the standard procedure for administering finger pressure pain in order to assess the extent to which subjects biased their reports of pain reduction when exposed to compliance-inducing instructions. Experiment 1 used only highly hypnotizable subjects and found that compliance-induced reductions in reported pain were about half as large as the reported reductions produced by hypnotic analgesia suggestions. Experiment 2 used low as well as high hypnotizables and administered hypnotic or nonhypnotic analgesia instructions and compliance instructions to the same subjects on separate pain trials. Reported pain reductions produced by hypnotic and nonhypnotic analgesia suggestions and those produced by compliance instructions were substantially and significantly correlated. Furthermore, hypnotizability correlated with compliance-induced reported pain reductions as highly as it correlated with the reported reductions produced by hypnotic analgesia suggestions. Among high hypnotizables (but not low hypnotizables) compliant responding was predicted by social desirability. The findings of both studies indicate that compliance strongly influences the reports of hypnotic and nonhypnotic analgesia proffered by high hypnotizables. The role of compliance in the pain reductions reported by low hypnotizables is less clear-cut. 相似文献
880.
C. Edward Watkins 《Counselling psychology quarterly》1990,3(1):101-108
Should counseling psychology remain a distinct specialty or should it merge with clinical psychology? Recently, a growing amount of attention has been directed toward the increasing similarities between the counseling and clinical specialties, and musings about integrating them into a generic training model have emerged. This position paper considers some problems with the current divisions existing between counseling and clinical psychology. Three basic points are examined: (a) the effects of language systems on the counseling and clinical specialties; (b) the normal-abnormal dimension of behavior as a weak justification for distinct specialties; and (c) the fostering of distorted views of human behavior through counseling and clinical training programs. 相似文献