全文获取类型
收费全文 | 6965篇 |
免费 | 314篇 |
专业分类
7279篇 |
出版年
2023年 | 50篇 |
2022年 | 34篇 |
2021年 | 55篇 |
2020年 | 124篇 |
2019年 | 137篇 |
2018年 | 176篇 |
2017年 | 189篇 |
2016年 | 245篇 |
2015年 | 165篇 |
2014年 | 148篇 |
2013年 | 737篇 |
2012年 | 302篇 |
2011年 | 372篇 |
2010年 | 228篇 |
2009年 | 264篇 |
2008年 | 284篇 |
2007年 | 317篇 |
2006年 | 267篇 |
2005年 | 249篇 |
2004年 | 268篇 |
2003年 | 276篇 |
2002年 | 236篇 |
2001年 | 138篇 |
2000年 | 126篇 |
1999年 | 119篇 |
1998年 | 119篇 |
1997年 | 89篇 |
1996年 | 94篇 |
1995年 | 87篇 |
1994年 | 98篇 |
1993年 | 65篇 |
1992年 | 90篇 |
1991年 | 65篇 |
1990年 | 76篇 |
1989年 | 45篇 |
1988年 | 45篇 |
1987年 | 52篇 |
1986年 | 49篇 |
1985年 | 64篇 |
1984年 | 48篇 |
1983年 | 83篇 |
1982年 | 58篇 |
1981年 | 50篇 |
1980年 | 43篇 |
1979年 | 61篇 |
1978年 | 52篇 |
1977年 | 42篇 |
1976年 | 41篇 |
1973年 | 39篇 |
1968年 | 28篇 |
排序方式: 共有7279条查询结果,搜索用时 0 毫秒
191.
Ronald C. Johnson Craig T. Nagoshi Frank M. Ahern James R. Wilson Gerald E. McClearn Steven G. Vandenberg 《Personality and individual differences》1983,4(6):709-713
Substantial differences exist across ethnic groups and sexes in generational changes in status among groups residing in Hawaii. Despite these generational differences across groups, age differences in personality are remarkably consistent across sexes and racial/ethnic groups, and the few Sex x Age, Ethnicity x Age or Sex x Ethnicity x Age interactions account for little variance in scores. It is concluded that age/generational differences in personality factor scores in these populations result from age and not, to any major degree, from cohort effects. 相似文献
192.
193.
R. Mark Herbertt 《Personality and individual differences》1983,4(5):451-456
Type A coronary-prone behaviour has been repeatedly associated with an increased incidence of coronary heart disease (CHD) amongst middle-aged men and women. This association appears to be independent of other standard CHD risk factors such as smoking, high blood pressure and elevated serum cholesterol levels. This paper presents normative and correlational data for a number of commonly-employed self-report measures of Type A behaviour and the structured interview. These data replicate U.S. findings that self-report measures tend to correlate only moderately with the Structured-Interview method of assessment of Type A behaviour. The implications of these data for researchers attempting to assess Type A behaviour, especially with limited resources, are discussed. 相似文献
194.
An apparatus is described that automates the elicitation of the proboscis extension reflex (PER) in dipterans. The PER has been used as a measure of both classical conditioning and central excitation. Most studies of PER have employed manual stimulation, which adds inter- and intraexperimenter differences in technique as another source of variance. The advantages of this apparatus are (1) elimination of individual differences in manual techniques of experimenters as a possible source of error variance and (2) capability of stimulating several flies individually during a single session. An experiment is reported comparing the manual and automated methods. 相似文献
195.
A sample of 112 administrators provided self-report data used to test two hypotheses derived from Korman's consistency model of work behavior. As predicted, those with high self-esteem experienced significantly greater need gratification than did those with low self-esteem, and self-esteem also significantly positively moderated the relationship between n gratification and work satisfaction. Need gratification was assessed for only those needs that were most salient for each person, thus eliminating a rival interpretation of the findings derived from the self-enhancement model of self-esteem. The moderating effect of self-esteem on the n gratification-work satisfaction relationship was limited to those experiencing low levels of n gratification, indicating a possible “boundary condition” of consistency theory. A problem with the use of moderator variables in behavioral science was also discussed. 相似文献
196.
The effect of prevocational contact on postentry behavior was studied using a sample of staff nurses. The results indicated that those nurses who had prevocational contact with the nursing occupation had different conceptions of the nursing role and more positive work attitudes than those who did not have prevocational contact with the profession. The groups. however, did not differ with respect to turnover. 相似文献
197.
We evaluated the initial effectiveness, maintenance, and transferability of the results of functional communication training as an intervention for the challenging behaviors exhibited by 3 students. Assessment indicated that escape from academic demands was involved in the maintenance of the challenging behaviors. Social attention was also implicated as controlling the behavior of 1 student. The intervention involved teaching alternative assistance-seeking and attention-getting phrases to the students in an effort to replace challenging behavior with these verbal equivalents. Multiple baseline data collected across the 3 students indicated that not only did the intervention substantially reduce challenging behavior but also that these results transferred across new tasks, environments, and teachers, and were generally maintained from 18 to 24 months following the introduction of functional communication training. These results are discussed in light of recent efforts to develop effective interventions for severe challenging behavior and to understand the processes underlying transfer and maintenance of intervention effects. 相似文献
198.
Perceived Control, Drive for Thinness, and Food Consumption: Anorexic Tendencies as Displaced Reactance 总被引:1,自引:0,他引:1
Although loss of perceived control has been implicated in the development of eating disorders, previous research has not directly tested the relationship between perceived control and food consumption. This study investigated the hypothesis that individuals with anorexic tendencies react to low perceived control by restricting food intake as a means of regaining a sense of control. Forty female undergraduates who scored either low or high on the Drive for Thinness Scale (Garner & Olmsted, 1984) were led to believe they would be participating in two separate studies. Perceived control was experimentally manipulated such that half of the subjects experienced low control and half experienced high control over a social situation. Under the guise of a second experiment, subjects tasted breakfast cereals and completed measures relevant to eating and body image. Results showed that subjects who were high in drive for thinness (DT) who experienced low control ate less sweetened cereal and planned to eat less at dinner than high DT subjects who experienced high control. Low DT subjects were unaffected by the control manipulation. The results are discussed in terms of displaced reactance. 相似文献
199.
200.
Lew Bank J. Hicks Marlowe John B. Reid Gerald R. Patterson Mark R. Weinrott 《Journal of abnormal child psychology》1991,19(1):15-33
Fifty-five families of chronically offending delinquents were randomly assigned to parent-training treatment or to service traditionally provided by the juvenile court and community. The families in the parent-training group received an average of 44.8 hours of professional contact (23.3 hours of which were phone contacts), and each control group family received treatment estimated at more than 50 hours on the average. Comparisons of police contact data at baseline and subsequent years for the two groups showed that subjects in both groups demonstrated reduced rates of offending during the followup years. The finding most relevant was significant treatment-by-time effect for offense rates, with most of this effect accounted for by a greater reduction in serious crimes for the experimental group during the treatment year, and a similar reduction of the community control group occurring in the first of three followup years. These early decrements in offense rates persisted during followup for both groups. Throughout the study, boys in the experimental group spent significantly less time in institutional settings than did boys in the control group. Parent training had a significant impact, but the reduction in offending was produced at very high emotional cost to staff. Although it is clear that this population requires substantial treatment resources, this study underscores the need for more work on prevention.Research for this paper was supported by grant MH 37938 from the Center for Studies of Antisocial and Violent Behavior, National Institute of Mental Health (NIMH), U.S. Public Health Service (PHS). The writing was supported in part by grants MH 17126 and MH 37940 from the same Center, grant DA 05304 from the National Institute of Drug Abuse, U.S. PHS., and grant MH 38730 from the Child and Adolescent Disorders Research Branch, NIMH, U.S. PHS. The authors gratefully acknowledge the enduring commitment of the treatment staff that made this study possible: Patricia Chamberlain, Marion Forgatch, and Kate Kavanagh. 相似文献