全文获取类型
收费全文 | 1481篇 |
免费 | 103篇 |
出版年
2024年 | 8篇 |
2023年 | 20篇 |
2022年 | 11篇 |
2021年 | 31篇 |
2020年 | 51篇 |
2019年 | 71篇 |
2018年 | 78篇 |
2017年 | 75篇 |
2016年 | 80篇 |
2015年 | 42篇 |
2014年 | 60篇 |
2013年 | 199篇 |
2012年 | 102篇 |
2011年 | 97篇 |
2010年 | 57篇 |
2009年 | 46篇 |
2008年 | 61篇 |
2007年 | 62篇 |
2006年 | 60篇 |
2005年 | 35篇 |
2004年 | 41篇 |
2003年 | 39篇 |
2002年 | 31篇 |
2001年 | 17篇 |
2000年 | 27篇 |
1999年 | 19篇 |
1998年 | 10篇 |
1997年 | 16篇 |
1996年 | 11篇 |
1995年 | 4篇 |
1994年 | 5篇 |
1993年 | 5篇 |
1992年 | 8篇 |
1991年 | 9篇 |
1990年 | 4篇 |
1989年 | 4篇 |
1987年 | 8篇 |
1986年 | 3篇 |
1985年 | 10篇 |
1984年 | 9篇 |
1983年 | 8篇 |
1982年 | 3篇 |
1981年 | 3篇 |
1980年 | 5篇 |
1979年 | 8篇 |
1978年 | 3篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1968年 | 3篇 |
1967年 | 3篇 |
排序方式: 共有1584条查询结果,搜索用时 31 毫秒
951.
Maryam Kia-Keating Karen Nylund-Gibson Brett M. Kia-Keating Christine Schock Ryan P. Grimm 《Journal of child and family studies》2018,27(2):398-411
Early poverty is associated with a cumulative load of family and community risk factors that can impact the development of self-regulatory abilities and result in socio-emotional and achievement gaps which begin early and persist across the lifespan. Ethnic minorities are disproportionately represented among children living in poverty. The longitudinal trajectories of self-regulation are important to understand in this population, in order to best inform prevention efforts. This study examines patterns of self-regulation over time among young, ethnic minority children living in low income, urban households. A stratified, random sample of 555 children, ages 2 to 4 years, (46% Black, 46% Hispanic; 47% female) were followed over three waves (including 1 and 5 year follow-ups). Internalizing and externalizing behaviors at approximately age nine were predicted by children’s early self-regulation. Latent class analyses revealed low, medium, and high levels of self-regulatory abilities at wave 1 (mean age: 2.99, SD?=?.81) and low and high levels, 1 year later (mean age: 4.39 (SD?=?.94). A gender effect was found whereby girls were more likely than boys to be in the high self-regulation class relative to the low at both waves. Using Latent Transition Analysis, distal outcomes were examined approximately 5 years after the initial assessment (mean age: 8.83, SD?=?.93). Children who sustained a higher level of self-regulation over time had the lowest internalizing and externalizing behaviors. Transition to low self-regulation at wave 2, regardless of initial self-regulation status, was related to greater severity of internalizing symptoms. Implications for prevention and future research are discussed. 相似文献
952.
Joonkoo Park Berry van den Berg Crystal Chiang Marty G. Woldorff Elizabeth M. Brannon 《Developmental science》2018,21(3)
Adult neuroimaging studies have demonstrated dissociable neural activation patterns in the visual cortex in response to letters (Latin alphabet) and numbers (Arabic numerals), which suggest a strong experiential influence of reading and mathematics on the human visual system. Here, developmental trajectories in the event‐related potential (ERP) patterns evoked by visual processing of letters, numbers, and false fonts were examined in four different age groups (7‐, 10‐, 15‐year‐olds, and young adults). The 15‐year‐olds and adults showed greater neural sensitivity to letters over numbers in the left visual cortex and the reverse pattern in the right visual cortex, extending previous findings in adults to teenagers. In marked contrast, 7‐ and 10‐year‐olds did not show this dissociable neural pattern. Furthermore, the contrast of familiar stimuli (letters or numbers) versus unfamiliar ones (false fonts) showed stark ERP differences between the younger (7‐ and 10‐year‐olds) and the older (15‐year‐olds and adults) participants. These results suggest that both coarse (familiar versus unfamiliar) and fine (letters versus numbers) tuning for letters and numbers continue throughout childhood and early adolescence, demonstrating a profound impact of uniquely human cultural inventions on visual cognition and its development. 相似文献
953.
This study investigated the relationship between employees’ perceptions of their organisation’s corporate ethical values and justice and their level of commitment. The study participants were 201 employees of a manufacturing company in the Democratic Republic of Congo (female = 32%%, general employees = 68%, mean years of service = 13 years; SD = 0.85 years). They completed measures on corporate ethical values, organisational justice, and organisational commitment. Findings following hierarchical regression indicated that employees’ perceptions of corporate ethical values and organisational justice significantly influence their affective and continuance organisational commitment. A work environment where a code of conduct is upheld and employees are treated fairly would encourage employees to extend their membership of the employing organisation. 相似文献
954.
“I'm an ogre so I'm very hungry!” “I'm assistant ogre”: The Social Function of Sibling Imitation in Early Childhood
下载免费PDF全文
![点击此处可从《Infant and child development》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Siblings' imitative behaviors were investigated in 39 middle‐class dyads during six 90‐min home sessions at both Time 1 (M age: older sibling = 4.4 years; younger sibling = 2.4 years) and Time 2 (2 years later). Although younger siblings imitated most often at T1 and T2, older siblings' imitation increased proportionally over time in comparison to younger siblings. Findings highlight the affiliative nature of imitation that occurred during reciprocal play interactions, via positive responses, and the content of the imitation. Finally, age was controlled by comparing first‐born siblings aged 4 at T1 to second‐born siblings aged 4 at T2. Findings demonstrated that sibling imitation had distinct characteristics despite the age match and partner effects. Sibling imitation is a dynamic, interactive social behavior and may be a powerful source of learning for young children.
Highlights
- The role of sibling imitation in ongoing play in early childhood is highlighted.
- Sibling imitation is a dynamic and affiliative behavior that promotes interaction during play.
- Naturalistic observations of sibling imitation document that it is a powerful source of learning for young children.
955.
James M. Van Leeuwen Laurie Miller Maira Zamir Ryan Grundy Jerry Amanya Clifford Chen 《Journal of Psychology in Africa》2018,28(2):105-109
This study aimed to profile the qualities of a holistic community reintegration program for former child soldiers (FCS) in the Lira region of Northern Uganda. Informants were a convenience sample of 37 FCS (age range 17 to 34, mean age 23.86, SD = 4.715 years; females = 29.73%). FCS completed semi-structured interviews on their current living situations and existing resources. This was aimed at assessing how they were transitioning back into the community and identifying gaps in resources. About 24% of FCS reported feeling unwelcome in their communities, suggesting a need for additional support and resources through the community integration models. Thematic analysis of the data suggests that the FCS would benefit from a holistic community reintegration program with the following qualities: psychosocial support, workforce development training, and job placement. FCS emphasised the need for skills training and employment opportunities over health and wellness; suggesting that mental health support and health care are not sufficient alone for them to successfully reintegrate into the community. FCS community integration policies and practices should prioritise holistic approaches. 相似文献
956.
957.
Gene M. Alarcon Joseph B. Lyons James C. Christensen Samantha L. Klosterman Margaret A. Bowers Tyler J. Ryan Sarah A. Jessup Kevin T. Wynne 《Behavior research methods》2018,50(5):1906-1920
Research on trust has burgeoned in the last few decades. Despite the growing interest in trust, little is known about trusting behaviors in non-dichotomous trust games. The current study explored propensity to trust, trustworthiness, and trust behaviors in a new computer-mediated trust relevant task. We used multivariate multilevel survival analysis (MMSA) to analyze behaviors across time. Results indicated propensity to trust did not influence trust behaviors. However, trustworthiness perceptions influenced initial trust behaviors and trust behaviors influenced subsequent trustworthiness perceptions. Indeed, behaviors fully mediated the relationship of trustworthiness perceptions over time. The study demonstrated the utility of MMSA and the new trust game, Checkmate, as viable research methods and stimuli for assessing the loci of trust. 相似文献
958.
This mixed methods study examines how college students’ perceptions and experiences affect their understanding of academic integrity. Using qualitative and quantitative responses from the Personal and Social Responsibility Institutional Inventory (PSRI), both quantitative and qualitative results demonstrate that while campuses may see a reduction in overall levels of cheating when punitive academic integrity policies are present, students may develop higher levels of personal and academic integrity through the use of more holistic and community-focused practices. 相似文献
959.
Lakshmi Bodduluri Mei Ying Boon Malcolm Ryan Stephen J. Dain 《Behavior research methods》2018,50(2):673-683
Tablet computer displays are amenable for the development of vision tests in a portable form. Assessing color vision using an easily accessible and portable test may help in the self-monitoring of vision-related changes in ocular/systemic conditions and assist in the early detection of disease processes. Tablet computer-based games were developed with different levels of gamification as a more portable option to assess chromatic contrast sensitivity. Game 1 was designed as a clinical version with no gaming elements. Game 2 was a gamified version of game 1 (added fun elements: feedback, scores, and sounds) and game 3 was a complete game with vision task nested within. The current study aimed to determine the normative values and evaluate repeatability of the tablet computer-based games in comparison with an established test, the Cambridge Colour Test (CCT) Trivector test. Normally sighted individuals [N = 100, median (range) age 19.0 years (18–56 years)] had their chromatic contrast sensitivity evaluated binocularly using the three games and the CCT. Games 1 and 2 and the CCT showed similar absolute thresholds and tolerance intervals, and game 3 had significantly lower values than games 1, 2, and the CCT, due to visual task differences. With the exception of game 3 for blue-yellow, the CCT and tablet computer-based games showed similar repeatability with comparable 95% limits of agreement. The custom-designed games are portable, rapid, and may find application in routine clinical practice, especially for testing younger populations. 相似文献
960.
Heidi M. Levitt Francisco I. Surace Emily E. Wheeler Erik Maki Darcy Alcántara Melanie Cadet Steven Cullipher Sheila Desai Gabriel Garza Sada John Hite Elena Kosterina Sarah Krill Charles Lui Emily Manove Ryan J. Martin Courtney Ngai 《Sex roles》2018,78(5-6):367-384
The present study explored the experience and understanding of gender for gay and queer men who perform drag. It is part of a 20-year program of research focused on how LGBTQ gender identities arise, why they coalesce, and how they are enacted within their social contexts. Interviewers on this topic involving 18 participants were subjected to a grounded theory analysis. Drag genders were tied to common experiences of overcoming social messages that maligned femininity within men, an appreciation of performance arts, and a desire to use social power to confront issues of sexism, genderism, and/or heterosexism. At the same time, participants reported differences in experiencing gender as binary or fluid and in whether they experienced their gender as shifting when engaged in performance. The study contributes to the program of research on LGBTQ genders by examining how drag gender is both essential and constructed, and how it resist sets of oppressive values and is eroticized. It examines how gendered communication functions when performed for audiences and how the social position of these men is both elevated and stigmatized within LGBTQ community. Drag gender’s multiple meanings are credited to its position between gay and transgender politics within this socially transformative moment in time. 相似文献