全文获取类型
收费全文 | 3329篇 |
免费 | 1426篇 |
国内免费 | 109篇 |
出版年
2023年 | 4篇 |
2022年 | 12篇 |
2021年 | 81篇 |
2020年 | 88篇 |
2019年 | 383篇 |
2018年 | 276篇 |
2017年 | 384篇 |
2016年 | 368篇 |
2015年 | 338篇 |
2014年 | 301篇 |
2013年 | 499篇 |
2012年 | 277篇 |
2011年 | 214篇 |
2010年 | 253篇 |
2009年 | 226篇 |
2008年 | 211篇 |
2007年 | 134篇 |
2006年 | 116篇 |
2005年 | 128篇 |
2004年 | 91篇 |
2003年 | 109篇 |
2002年 | 109篇 |
2001年 | 82篇 |
2000年 | 78篇 |
1999年 | 38篇 |
1998年 | 12篇 |
1997年 | 9篇 |
1996年 | 8篇 |
1995年 | 5篇 |
1994年 | 7篇 |
1993年 | 3篇 |
1992年 | 7篇 |
1991年 | 3篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1984年 | 1篇 |
排序方式: 共有4864条查询结果,搜索用时 15 毫秒
161.
ACOUSTIC ANALYSIS OF ORAL PRODUCTIONS OF INFANTS LATER DIAGNOSED WITH AUTISM AND THEIR MOTHER 下载免费PDF全文
Julie Brisson Karine Martel Josette Serres Sylvain Sirois Jean‐Louis Adrien 《Infant mental health journal》2014,35(3):285-295
Research on early signs of autism in social interactions often focuses on infants’ motor behaviors; few studies have focused on speech characteristics. This study examines infant‐directed speech of mothers of infants later diagnosed with autism (LDA; n = 12) or of typically developing infants (TD; n = 11) as well as infants’ productions (13 LDA, 13 TD). Since LDA infants appear to behave differently in the first months of life, it can affect the functioning of dyadic interactions, especially the first vocal productions, sensitive to expressiveness and emotions sharing. We assumed that in the first 6 months of life, prosodic characteristics (mean duration, mean pitch, and intonative contour types) will be different in dyads with autism. We extracted infants’ and mothers’ vocal productions from family home movies and analyzed the mean duration and pitch as well as the pitch contours in interactive episodes. Results show that mothers of LDA infants use relatively shorter productions as compared to mothers talking to TD infants. LDA infants’ productions are not different in duration or pitch, but they use less complex modulated productions (i.e., those with more than two melodic modulations) than do TD. Further studies should focus on developmental profiles in the first year, analyzing prosody monthly. 相似文献
162.
163.
Myrto‐Foteini Mavilidi Vincent Hoogerheide Fred Paas 《Applied cognitive psychology》2014,28(5):720-726
The negative thoughts that anxious children experience while sitting for an exam consume working memory resources at the cost of resources for performing on the exam. In a randomized field experiment (N = 117) with primary school students, we investigated the hypothesis that stimulating students to look through the problems of a math test before they start solving them would reduce anxiety, release these anxiety‐related working memory resources, and lead to higher test performance than not allowing students to look ahead in the test. The results confirmed the hypothesis, indicating that the positive effects of looking ahead applied to all students, regardless of their anxiety level (low, medium, or high). The results suggest that by looking ahead in a test, less working memory resources are consumed by intrusive thoughts, and consequently, more resources can be used for performing on the test. Theoretical and practical implications of the results are discussed. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
164.
Karen Frost‐Arnold 《希帕蒂亚:女权主义哲学杂志》2014,29(4):790-807
This paper argues that trustworthiness is an epistemic virtue that promotes objectivity. I show that untrustworthy imposture can be an arrogant act of privilege that silences marginalized voices. But, as epistemologists of ignorance have shown, sometimes trickery and the betrayal of epistemic norms are important resistance strategies. This raises the question: when is betrayal of trust epistemically virtuous? After establishing that trust is central to objectivity, I argue for the following answer: a betrayal is epistemically vicious when it strengthens or promotes oppressive, exclusive networks of trust, and a betrayal is epistemically virtuous when it expands trust networks to involve the oppressed. These criteria correctly account for both the epistemic vice of a recent case of Internet imposture and the epistemic virtue of resistant tricksters. 相似文献
165.
166.
Observed Variability and Values Matter: Toward a Better Understanding of Information Search and Decisions from Experience 下载免费PDF全文
The search for different options before making a consequential choice is a central aspect of many important decisions, such as mate selection or purchasing a house. Despite its importance, surprisingly little is known about how search and choice are affected by the observed and objective properties of the decision problem. Here, we analyze the effects of two key properties in a binary choice task: the options' observed and objective values, and the variability of payoffs. First, in a large public data set of a binary choice task, we investigate how the observed value and variability relate to decision‐makers' efforts and preferences during search. Furthermore, we test how these properties influence the chance of correctly identifying the objectively maximizing option, and how they affect choice. Second, we designed a novel experiment to systematically analyze the role of the objective difference between the options. We find that a larger objective difference between options increases the chance for correctly identifying the maximizing option, but it does not affect behavior during search and choice. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
167.
Unravelling Crime Series Patterns amongst Serial Sex Offenders: Duration,Frequency, and Environmental Consistency 下载免费PDF全文
Nadine Deslauriers‐Varin Eric Beauregard 《Journal of Investigative Psychology & Offender Profiling》2014,11(3):253-275
Crime linkage and the investigation of behavioural consistency amongst serial offenders has been a flourishing field of research over the past decade or so, especially with respect to serial sex offenders. The emerging research in this field has often portrayed serial sex offenders as a single, distinct, and homogeneous group. Such an assumption, however, has never been empirically examined. Using a criminal career approach and a sample of 72 serial sex offenders who have committed a total of 361 sexual assaults on stranger victims, the current study aims to examine and describe subgroups of crime series patterns amongst serial sex offenders in terms of duration and frequency of offending. The level of environmental consistency display (i.e. offender's choice of crime location and characteristics of the crime site selected) across subgroups of crime series patterns is also examined. Study findings suggest the presence and heterogeneity of crime series patterns amongst serial sex offenders, advocating for the consideration of subgroups of crime series patterns when studying serial sex offenders. Moreover, the offenders' level of environmental consistency varies across the different crime series patterns identified, allowing for the identification of subgroups of offenders showing a higher or lower level of environmental consistency. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
168.
Leader-member exchange (LMX) theory suggests that supervisors have relatively high-quality exchange relationships with some employees and relatively low-quality relationships with others. Prior investigations indicate that employees who have high-quality LMX relationships with their supervisors benefit in terms of more positive work attitudes and higher performance than those who do not. However, when employees feel like their supervisors are favouring some employees over others, it is likely to undermine the positive effects of LMX (even among employees who have high-quality exchanges with their supervisor). Using data from 305 employees and their coworkers, we found that the positive effects of LMX (regarding organizational citizenship behaviour, withdrawal behaviour, and relative deprivation regarding one’s career) were weakened by perceived leader favouritism. Implications and directions for future research are discussed. 相似文献
169.
Around the world,adolescence is a time of heightened sensation seeking and immature self‐regulation 下载免费PDF全文
Laurence Steinberg Grace Icenogle Elizabeth P. Shulman Kaitlyn Breiner Jason Chein Dario Bacchini Lei Chang Nandita Chaudhary Laura Di Giunta Kenneth A. Dodge Kostas A. Fanti Jennifer E. Lansford Patrick S. Malone Paul Oburu Concetta Pastorelli Ann T. Skinner Emma Sorbring Sombat Tapanya Liliana Maria Uribe Tirado Liane Peña Alampay Suha M. Al‐Hassan Hanan M. S. Takash 《Developmental science》2018,21(2)
The dual systems model of adolescent risk‐taking portrays the period as one characterized by a combination of heightened sensation seeking and still‐maturing self‐regulation, but most tests of this model have been conducted in the United States or Western Europe. In the present study, these propositions are tested in an international sample of more than 5000 individuals between ages 10 and 30 years from 11 countries in Africa, Asia, Europe and the Americas, using a multi‐method test battery that includes both self‐report and performance‐based measures of both constructs. Consistent with the dual systems model, sensation seeking increased between preadolescence and late adolescence, peaked at age 19, and declined thereafter, whereas self‐regulation increased steadily from preadolescence into young adulthood, reaching a plateau between ages 23 and 26. Although there were some variations in the magnitude of the observed age trends, the developmental patterns were largely similar across countries. 相似文献
170.
Gesture for generalization: gesture facilitates flexible learning of words for actions on objects 下载免费PDF全文
Elizabeth M. Wakefield Casey Hall Karin H. James Susan Goldin‐Meadow 《Developmental science》2018,21(5)
Verb learning is difficult for children (Gentner, 1982 ), partially because children have a bias to associate a novel verb not only with the action it represents, but also with the object on which it is learned (Kersten & Smith, 2002 ). Here we investigate how well 4‐ and 5‐year‐old children (N = 48) generalize novel verbs for actions on objects after doing or seeing the action (e.g., twisting a knob on an object) or after doing or seeing a gesture for the action (e.g., twisting in the air near an object). We find not only that children generalize more effectively through gesture experience, but also that this ability to generalize persists after a 24‐hour delay. 相似文献