全文获取类型
收费全文 | 4225篇 |
免费 | 51篇 |
专业分类
4276篇 |
出版年
2024年 | 20篇 |
2023年 | 29篇 |
2022年 | 27篇 |
2021年 | 46篇 |
2020年 | 67篇 |
2019年 | 94篇 |
2018年 | 132篇 |
2017年 | 133篇 |
2016年 | 186篇 |
2015年 | 110篇 |
2014年 | 134篇 |
2013年 | 479篇 |
2012年 | 231篇 |
2011年 | 224篇 |
2010年 | 135篇 |
2009年 | 117篇 |
2008年 | 197篇 |
2007年 | 165篇 |
2006年 | 146篇 |
2005年 | 126篇 |
2004年 | 147篇 |
2003年 | 137篇 |
2002年 | 98篇 |
2001年 | 87篇 |
2000年 | 83篇 |
1999年 | 49篇 |
1998年 | 49篇 |
1997年 | 51篇 |
1996年 | 44篇 |
1995年 | 45篇 |
1994年 | 34篇 |
1993年 | 35篇 |
1992年 | 46篇 |
1991年 | 37篇 |
1990年 | 52篇 |
1989年 | 35篇 |
1988年 | 43篇 |
1987年 | 27篇 |
1986年 | 31篇 |
1985年 | 31篇 |
1984年 | 33篇 |
1983年 | 24篇 |
1982年 | 28篇 |
1981年 | 13篇 |
1979年 | 26篇 |
1978年 | 15篇 |
1977年 | 18篇 |
1974年 | 21篇 |
1972年 | 14篇 |
1970年 | 14篇 |
排序方式: 共有4276条查询结果,搜索用时 15 毫秒
981.
Martijn A. de Lange Eline van der Haar Johan C. Karremans 《Journal of applied social psychology》2012,42(12):3114-3125
Increasing police patrolling is often assumed to be an effective means of enhancing general feelings of safety. This relationship between perceiving police and feelings of safety was tested by having police officers patrol during a field experiment (Study 1) and by manipulating the police presence in pictures of neighborhoods in a laboratory experiment (Study 2). Both studies show that in environments that are generally considered to be safe, feelings of safety are not increased by police presence. Moreover, men feel less safe when police are present compared with when police are absent. The results are discussed in terms of possible underlying mechanisms and implications for police patrolling. 相似文献
982.
In 3 studies with student samples, we advance a social‐motivational approach to gossip. We developed the Motives to Gossip Questionnaire to distinguish negative influence, information gathering and validation, social enjoyment, and group protection as motives underlying gossip. Study 1 demonstrated that these motives can be distinguished empirically, and that the informational motive was the most prevalent reason to instigate gossip. Study 2 showed that group protection was especially important when the opportunity to gossip with a group member about another member's norm‐violating behavior was salient. Study 3 showed that when participants imagined someone gossiped to them about another group member's norm violation, and ascribed this to group protection, they rated the gossip as social and did not disapprove of it. 相似文献
983.
984.
Pedestrian safety is a serious concern at busy intersections and pedestrian campuses across the nation. Although crosswalks and signs inform pedestrians where to cross, there is no standard protocol for pedestrians to signal drivers that they wish to use the crosswalks, except to stand in or at the crosswalk. We examined the effects of two pedestrian prompts, a raised hand and extended arm, on motorist yielding at uncontrolled crosswalks. The two prompts were effective at increasing yielding. 相似文献
985.
This study examined whether pilots operating a flight simulator completed digital or paper flight checklists more accurately after receiving postflight graphic and verbal feedback. The dependent variable was the number of checklist items completed correctly per flight. Following treatment, checklist completion with paper and digital checklists increased from 38% and 39%, respectively, to nearly 100% and remained close to 100% after feedback and praise for improvement were withdrawn. Performance was maintained at or near 100% during follow-up probes. 相似文献
986.
An abundance of evidence suggests that the consequences of collective ingroup victimization can traverse generations, even among group members who are not direct descendants of victims. It nevertheless remains unclear why only some group members experience vicarious victimization. To examine the role of collective identification in the transmission of trauma across generations, we surveyed members of a Jewish community—including descendants of holocaust survivors and others who were not descendants of the holocaust survivors. Among non‐descendants, Jewish identification was negatively associated with symptoms of post‐traumatic stress disorder (PTSD). In contrast, among descendants, Jewish identification was positively associated with PTSD symptoms. Further, familial willingness to discuss the holocaust mediated the relationship between identification and PTSD symptoms. Additional analyses confirmed that these effects were specific to holocaust‐related PTSD symptoms and not general anxiety or depression. These findings suggest that collective identity may both buffer and enhance the effects of collective victimization on mental health. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
987.
Pellegrini AD Van Ryzin MJ Roseth C Bohn-Gettler C Dupuis D Hickey M Peshkam A 《Aggressive behavior》2011,37(3):248-257
This longitudinal, naturalistic study addressed behavioral and social cognitive processes implicated in preschool children's social dominance. In the first objective, we examined the degree to which peer aggression, affiliation, and postaggression reconciliation predicted social dominance across a school year. Consistent with predictions, all three predicted dominance early in the year while only affiliation predicted dominance later in the year, suggesting that aggression, affiliation, and reconciliation were used to establish social dominance where affiliation was used to maintain it. In the second, exploratory, objective we tested the relative importance of social dominance and reconciliation (the Machiavellian and Vygotskian intelligence hypotheses, respectively) in predicting theory of mind/false belief. Results indicated that social dominance accounted for significant variance, beyond that related to reconciliation and affiliation, in predicting theory of mind/false belief status. Results are discussed in terms of specific behavioral and social cognitive processes employed in establishing and maintaining social dominance. 相似文献
988.
Reijntjes A Kamphuis JH Prinzie P Boelen PA van der Schoot M Telch MJ 《Aggressive behavior》2011,37(3):215-222
Previous meta-analytic research has shown both concurrent and prospective linkages between peer victimization and internalizing problems in youth. However, the linkages between peer victimization and externalizing problems over time have not been systematically examined, and it is therefore unknown if externalizing problems are antecedents of victimization, consequences of victimization, both, or neither. This study provides a meta-analysis of 14 longitudinal studies examining prospective linkages between peer victimization and externalizing problems (n = 7,821). Two prospective paths were examined: the extent to which peer victimization at baseline predicts future residualized changes in externalizing problems, as well as the extent to which externalizing problems at baseline predict future residualized changes in peer victimization. Results revealed significant associations between peer victimization and subsequent residualized changes in externalizing problems, as well as significant associations between externalizing problems and subsequent residualized changes in peer victimization. Hence, externalizing problems function as both antecedents and consequences of peer victimization. 相似文献
989.
The Pictorial Attitude Implicit Association Test (PA‐IAT) has recently been proposed as new measure of implicit motives. We report a study that provides the first evidence for the convergent validity of the PA‐IAT by showing that the PA‐IAT correlates significantly with a standard measure of implicit motives [i.e. the Picture Story Exercise (PSE)]. Discriminant validity of the PA‐IAT was verified in the sense that the PA‐IAT shared virtually no common variance with explicit motive measures. Our analyses revealed that the PA‐IAT and PSE can best be conceived as related but distinct measures. We further showed that the PA‐IAT had incremental validity in predicting performance on a memory recall task over and above the PSE. In general, our results confirm that the PA‐IAT is a valid measure of implicit motives and can serve as valid alternative to the PSE. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
990.
To explain why situational judgment tests are often correlated with personality measures, Motowidlo, Hooper, and Jackson (2006a, 2006b) developed the implicit trait policy theory. Implicit trait policies are beliefs about causal relationships between personality traits and behavioral effectiveness. Among 180 employees, this field study examined whether a multimedia situational judgment test that was intended to assess leadership skills can capture individual differences in such policies. Furthermore, it was examined whether these implicit trait policies were able to predict leadership behavior. Results confirmed that the situational judgment test was able to capture individual differences in implicit trait policies for Extraversion and Conscientiousness. Furthermore, results showed that implicit trait policies for Extraversion can predict leadership behavior over and above leadership experience and the associated personality trait. 相似文献