全文获取类型
收费全文 | 3785篇 |
免费 | 243篇 |
出版年
2023年 | 36篇 |
2022年 | 53篇 |
2021年 | 87篇 |
2020年 | 132篇 |
2019年 | 147篇 |
2018年 | 209篇 |
2017年 | 200篇 |
2016年 | 171篇 |
2015年 | 135篇 |
2014年 | 139篇 |
2013年 | 414篇 |
2012年 | 222篇 |
2011年 | 223篇 |
2010年 | 114篇 |
2009年 | 134篇 |
2008年 | 177篇 |
2007年 | 179篇 |
2006年 | 134篇 |
2005年 | 118篇 |
2004年 | 105篇 |
2003年 | 81篇 |
2002年 | 80篇 |
2001年 | 49篇 |
2000年 | 37篇 |
1999年 | 51篇 |
1998年 | 40篇 |
1997年 | 20篇 |
1996年 | 28篇 |
1995年 | 24篇 |
1994年 | 23篇 |
1993年 | 22篇 |
1992年 | 19篇 |
1991年 | 19篇 |
1990年 | 20篇 |
1989年 | 21篇 |
1988年 | 22篇 |
1987年 | 16篇 |
1986年 | 21篇 |
1985年 | 21篇 |
1984年 | 22篇 |
1982年 | 25篇 |
1981年 | 14篇 |
1980年 | 15篇 |
1979年 | 20篇 |
1977年 | 16篇 |
1976年 | 14篇 |
1974年 | 16篇 |
1973年 | 19篇 |
1972年 | 13篇 |
1970年 | 13篇 |
排序方式: 共有4028条查询结果,搜索用时 15 毫秒
911.
912.
Claudia Campos Sarah E. Bloom Lori Kollin Jennifer R. Weyman 《Behavioral Interventions》2023,38(2):302-316
The extent to which multiple schedules are an effective schedule thinning method following functional communication training (FCT) relies on the control the schedule-correlated stimuli exert over behavior. Thus, the stimuli used to signal the schedule in place (e.g., reinforcement and extinction) in a multiple schedule arrangement require special attention. To date, the majority of the research on multiple schedules has evaluated the use of different arbitrary signals as schedule-correlated stimuli (e.g., poster boards). These signals are considered static as they lack movement. More recently, some studies have successfully used dynamic signals, which include movement or animation, within multiple schedule arrangements. However, the extent to which one type of signal may result in faster stimulus control over behavior has not been evaluated. Thus, the purpose of this study was to compare the use of static and dynamic signals as schedule-correlated stimuli in multiple schedules used within the context of FCT. Four children diagnosed with autism spectrum disorder participated in the study. The results suggest that no differences in discriminated manding were observed for three out of four participants. Only dynamic signals resulted in discriminated manding for one participant. 相似文献
913.
Hannah L. Shields Kyoko Konishi Sarah Aroner Harlyn Aizley Anne Remington Hang Lee Stephen Buka Jill M. Goldstein 《Journal of Neuropsychology》2023,17(1):146-160
The current study aimed to understand how sex differences in the timing of hypertension onset contribute to early midlife risk for cognitive decline that may differ by sex and whether sex-dependent advantages in normotensive populations are influenced by the presence of hypertension. One hundred and ninety-five adults aged 45–55 from the New England Family Study underwent neuropsychological testing to assess attention, executive function, and memory. Physician-diagnosed hypertension status was self-reported via questionnaire. Mid-adulthood hypertension was associated with worse performance on measures of attention and memory, but the cognitive domains impacted varied by sex. Hypertension was associated with only attention in men, whereas in women it was associated with attention and associative and working memory. Sex differences in midlife cognitive performance found in normotensive adults were attenuated in those with hypertension. Our results underscore the importance of accounting for sex when assessing the impact of hypertension on midlife cognition that could be indicative of later decline and risk for cognitive impairment and dementia, given hypertension is an independent risk factor. 相似文献
914.
Marie Helweg-Larsen Laurel M. Peterson Sarah H. DiMuccio 《Social and Personality Psychology Compass》2023,17(11):e12873
Research suggests a U.S. political ideology gap for taking COVID-19 precautions, but we do not know the role of cognitive risk (assessed here as perceived risk) and affective risk (assessed here as worry) in explaining why conservative Americans participated in fewer recommended precautions (e.g., mask wearing) and whether governmental trust attenuates the effect. We predicted that conservatives (compared with liberals) would take fewer precautions because they thought they were less at risk and were less worried about COVID-19, but that this would be more pronounced for those with low governmental trust. In this study, U.S. adults (representative sample: N = 738; Mage = 46.8; 52% women; 78% white) who had not had COVID-19 took two online surveys 2 weeks apart during the first wave of the pandemic (April 2020). Participants reported ideology, perceived risk of getting or dying of COVID-19, worry about COVID-19, and trust in the CDC and state officials at baseline. At follow-up, participants reported on COVID-19 precautions: (1) prevention behavior participation (e.g., mask wearing) and (2) behavioral willingness for future behaviors (e.g., vaccination). Results showed that, politically conservative Americans took fewer precautions due to lower worry (but unexpectedly not due to lower perceived risk). As predicted, when trust was high, the ideology gap was muted for predicting precautions as well as for predicting perceived risk and worry. In sum, conservatives worried less about COVID-19 which predicted fewer precautions, but trust in governmental institutions reduced this ideological gap. Improving governmental trust could be one fruitful path to increasing COVID-19 precautions. 相似文献
915.
A survey was distributed to service providers in Connecticut working with newborn to 6-year-old handicapped children to examine the degree to which service activities currently focus on the family. Most service-provision goals elicited by the survey were child-focused clinical goals, but family-focused goals were frequently cited However, 30% reported spending no time with families during a typical week. Published programs or curricula were rarely used. The providers felt they were successfully achieving goals set for families but that they encountered some problems, including a lack of time to work with families. Comparisons were made between those working with children from birth to 3 years of age and those working with children 3 to 6 years of age. Suggestions concerning the implementation of the family-focused agenda were made. 相似文献
916.
917.
918.
919.
920.
Anna L. Olsavsky Jia Yan Sarah J. Schoppe-Sullivan Claire M. Kamp Dush 《Family process》2020,59(2):571-585
Although the association between maternal gatekeeping and relationship functioning has been explored by a few studies, none of these have focused on fathers’ perceptions of these constructs. Given that today's new fathers are challenged by elevated expectations for active parenting and coparenting even as most new mothers remain primary caregivers of infant children, this is a critical omission. This study examined the associations between new fathers’ perceptions of maternal gatekeeping and change in dyadic adjustment as mediated through coparenting closeness. Maternal gatekeeping was reported by 182 fathers at 3 months postpartum, coparenting closeness was reported at 3 and 6 months postpartum, and dyadic adjustment was reported during the third trimester of pregnancy and at 9 months postpartum. Fathers’ perceptions of relative change in coparenting closeness from 3 to 6 months mediated associations between fathers’ perceptions of maternal gatekeeping at 3 months and relative change in dyadic adjustment from the third trimester to 9 months postpartum. In particular, findings indicate that greater perceived maternal gate opening was associated with higher levels of dyadic adjustment through higher levels of coparenting closeness, whereas greater perceived maternal gate closing was associated with lower levels of dyadic adjustment through lower levels of coparenting closeness. This study highlights the importance of studying fathers in the context of the family system and the role of the coparenting relationship at the transition to parenthood in couple relationship functioning. 相似文献