全文获取类型
收费全文 | 2806篇 |
免费 | 39篇 |
专业分类
2845篇 |
出版年
2024年 | 25篇 |
2023年 | 41篇 |
2022年 | 40篇 |
2021年 | 59篇 |
2020年 | 101篇 |
2019年 | 121篇 |
2018年 | 131篇 |
2017年 | 163篇 |
2016年 | 162篇 |
2015年 | 104篇 |
2014年 | 111篇 |
2013年 | 324篇 |
2012年 | 144篇 |
2011年 | 147篇 |
2010年 | 97篇 |
2009年 | 81篇 |
2008年 | 124篇 |
2007年 | 128篇 |
2006年 | 125篇 |
2005年 | 87篇 |
2004年 | 83篇 |
2003年 | 64篇 |
2002年 | 51篇 |
2001年 | 31篇 |
2000年 | 24篇 |
1999年 | 23篇 |
1998年 | 8篇 |
1997年 | 14篇 |
1996年 | 19篇 |
1995年 | 18篇 |
1994年 | 16篇 |
1993年 | 16篇 |
1992年 | 14篇 |
1991年 | 6篇 |
1990年 | 14篇 |
1989年 | 8篇 |
1988年 | 7篇 |
1987年 | 9篇 |
1986年 | 11篇 |
1985年 | 8篇 |
1984年 | 7篇 |
1983年 | 6篇 |
1981年 | 11篇 |
1980年 | 4篇 |
1979年 | 9篇 |
1977年 | 5篇 |
1976年 | 6篇 |
1975年 | 6篇 |
1965年 | 3篇 |
1963年 | 4篇 |
排序方式: 共有2845条查询结果,搜索用时 15 毫秒
831.
This study examined time-based prospective memory performance in relation to individual and developmental differences in executive functioning. School-age children and young adults completed six experimental tasks that tapped three basic components of executive functioning: inhibition, updating, and mental shifting. Monitoring performance was examined in a time-based prospective memory task in which participants indicated the passing of time every 5min while watching a movie. Separate analyses of the executive functioning data yielded a two-factor solution for both age groups, with the updating and inhibition tasks constituting a common factor and the shifting tasks constituting a separate factor. Both children and adults showed accelerating monitoring functions with low rates of clock checking during the early phase of each 5-min interval. However, compared with adults, children needed more clock checks for obtaining the same level of response accuracy. Executive functioning had selective effects on time-based prospective memory performance. In both children and adults, monitoring performance was related to the inhibition and updating components, but not to the shifting component, of executive functioning. We conclude that difficulties in temporary maintenance and updating of working memory contents may create discontinuities in sense of time, leading to an increased reliance on external cues for time keeping. 相似文献
832.
833.
Increasing evidence indicates the importance of environmental variables in explaining physical activity. This study evaluated sex differences in perception of home and neighborhood environmental support and assessed which neighborhood environmental variables were associated with reported physical activity of elderly people. A sample of 126 women (M age = 79.1 +/- 6.6 yr.) and 55 men (M age = 76.6 +/- 7.7 yr.) were healthy, community-dwelling individuals. A questionnaire about environmental variables was administered. Physical activity was assessed on the Baecke Questionnaire. Logistic regression analysis showed that Neighborhood Safety was related to total physical activity, activity in leisure time, and sport activities. Men were also likely to be more active in leisure time than women. Neighborhood Personal Safety was associated with physical activity of these elderly people, showing a potential influence of the environmental domain in physical activity. 相似文献
834.
The authors propose and test a model of multiple-goal pursuit that specifies how individuals allocate effort among multiple goals over time. The model predicts that whether individuals decide to step up effort, coast, abandon the current goal, or switch to pursue another goal is determined jointly by the emotions that flow from prior goal progress and the proximity to future goal attainment, and proximally determined by changes in expectancies about goal attainment. Results from a longitudinal diary study and 2 experiments show that positive and negative goal-related emotions can have diametrically opposing effects on goal-directed behavior, depending on the individual's proximity to goal attainment. The findings resolve contrasting predictions about the influence of positive and negative emotions in volitional behavior, critically amend the goal gradient hypothesis, and provide new insights into the dynamics and determinants of multiple-goal pursuit. 相似文献
835.
Mark Wolery Ph.D. Margaret G. Werts Ed.S. Ariane Holcombe M.S. Suzanne S. Billings M.S. Maria A. Vassilaros M.A. 《Journal of Behavioral Education》1993,3(2):187-204
Instructive feedback involves presenting extra, non-target stimuli in the consequent events for children's responses. Two methods of presenting instructive feedback during direct instruction were compared. These methods involved presenting two extra stimuli on all trials, and presenting the two extra stimuli separately on alternating trials. Preschool students were taught coin combinations using a constant time delay procedure with instructive feedback stimuli added to both praise and correction statements. An adapted alternating treatments design was used to evaluate the two methods of presenting instructive feedback. The students were assessed to determine the extent to which instructive feedback stimuli were learned. The results indicate that students learned some of the instructive feedback stimuli and no consistent differences in the effectiveness of the two presentation methods were noted. Further, relationships between the two instructive feedback stimuli appeared to be established. Implications for instruction and future research are discussed. 相似文献
836.
837.
838.
839.
Helena Moreira Roberta Frontini Monika Bullinger Maria Cristina Canavarro 《Journal of child and family studies》2014,23(2):347-359
Despite the increasing number of studies on the health-related quality of life (HRQOL) of children with type 1 diabetes (T1D), little is known about the influence of family and parental factors on this outcome. This study aimed to explore whether family cohesion and children’s HRQOL were connected through three indicators of parental psychological adjustment (parenting stress, depressive symptoms, and anxious symptoms) as well as whether these links varied according to the child’s age. Levels of family cohesion, parenting stress, and depression/anxiety symptoms of parents of children with T1D and parents of healthy children were compared. The sample included 88 child–parent dyads composed of children/adolescents (8–18 years old) with T1D and one of their parents and 121 dyads composed of healthy children/adolescents and one of their parents. The parents completed self-report measures of family cohesion, parenting stress, and emotional adjustment, and the children completed measures of HRQOL. Testing of the hypothesized moderated mediational model showed that higher HRQOL ratings in children were associated with higher levels of cohesion through lower levels of parental stress, regardless of the child’s age. Parents of children with T1D perceived less cohesion and felt more anxiety and stress about parenting tasks compared to parents of healthy children. Our findings suggest that parents of children with T1D are at an increased risk of psychological maladjustment. Moreover, this study highlights the interrelation between family/parental functioning and child adjustment and makes an innovative contribution by identifying a mechanism that may account for the link between family and child variables. 相似文献
840.
Giovanni Piumatti Laura Pipitone Angela Maria Di Vita Delia Latina Emanuela Rabaglietti 《Journal of Adult Development》2014,21(1):1-12
We explored the phenomenon of the transition to adulthood, focusing on how young people cope with various developmental tasks in relation to their expectations, future projects, fears and indecision in two Italian regional areas characterized by different trends in youth employability, higher educational attainment and family formation process. We measured self-perceived adulthood, self-reported satisfaction, independence, perceived support regarding personal relationships and practical and economical issues, personal projections and future life’s choices. We also explored the perception of self-fulfillment for the future concerning personal goals in life, such as in the spheres of work, studies and economic autonomy together with expectations for the quality of personal relationships. One hundred and sixty nonworking university students (M age = 22.6; SD = 2.77; range = 19–35) from the Universities of Turin and Palermo took part in this study. Sub-groups differed on self-perceived adulthood, self-reported satisfaction, independence, perceived support and self-fulfillment. Psychological and economic independence from the family of origin was most perceived by the participants from Turin who reported a higher degree of satisfaction regarding their choice of studies and their future perspective of self-fulfillment at work. Young people from Palermo highlighted personal relationships as an important source of perceived support. 相似文献