首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   467篇
  免费   59篇
  国内免费   50篇
  2024年   2篇
  2023年   10篇
  2022年   20篇
  2021年   22篇
  2020年   30篇
  2019年   22篇
  2018年   25篇
  2017年   36篇
  2016年   33篇
  2015年   24篇
  2014年   22篇
  2013年   83篇
  2012年   14篇
  2011年   23篇
  2010年   13篇
  2009年   19篇
  2008年   15篇
  2007年   16篇
  2006年   12篇
  2005年   14篇
  2004年   23篇
  2003年   14篇
  2002年   14篇
  2001年   11篇
  2000年   11篇
  1999年   3篇
  1998年   6篇
  1997年   7篇
  1996年   5篇
  1995年   6篇
  1994年   6篇
  1993年   4篇
  1992年   1篇
  1990年   1篇
  1989年   1篇
  1984年   2篇
  1981年   1篇
  1980年   1篇
  1979年   3篇
  1977年   1篇
排序方式: 共有576条查询结果,搜索用时 15 毫秒
491.
Using longitudinal data from the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development (N = 1088), we examine changes in maternal perception of closeness and conflict in the mother–child relationship from the child's preschool to adolescent years, with attention to variation by maternal education. Analyses using individual growth models show that mother–child closeness increases, while mother–child conflict decreases, from preschool to first grade. From first grade to age 15, mother–child closeness decreases, while mother–child conflict increases, both gradually. The decrease in mother–child conflict from preschool to first grade and the increases in mother–child conflict from first to fifth grade, sixth grade, and age 15 are less steep for mothers with a college degree than for mothers without a college degree. These findings underscore the importance of examining changes in parent–child relationships using longitudinal data across children's developmental stages and their variations by parental social and economic status.  相似文献   
492.
This is a case study of a woman in midlife, trying to negotiate a transition from family attachment to sexual love and intimacy. The move was derailed earlier by traumatic adolescent losses, her denial of her lesbian identity, and the onset of bipolar disorder. By entering therapy, following her dreams and synchronous life events, and enduring another bipolar break, the woman was able to make the transition and become more completely herself.  相似文献   
493.
论手术时间与外科医生的手术风格   总被引:5,自引:0,他引:5  
手术操作时间的长短是衡量外科医生手术技能的重要指标,作者根据自己实施2万多例矫形外科手术的体会,试论手术速度与外科医生的性格特征、工作态度、手术风格及综合能力的关系.提出了要成为一个好的外科医生应具备的基本素质、技能训练和学习要求.  相似文献   
494.
495.
工作记忆容量和加工速度在归纳推理能力老化中的作用   总被引:1,自引:0,他引:1  
利用结构方程模型考察了工作记忆容量和加工速度在归纳推理老化中的作用。样本为217名社区老人。结果发现:(1)工作记忆容量在归纳推理老化中具有重要作用.语音环路和视空问初步加工系统在推理过程巾参与程度相当。(2)在年龄和归纳推理能力之问存在年龄——加工速度——工作记忆容量——归纳推理这样一条层级关系。年龄、加工速度和工作记忆容量共同解释归纳推理中57%的变异。  相似文献   
496.
工作记忆、加工速度与流体智力的发展   总被引:7,自引:0,他引:7  
王亚南  刘昌 《心理科学》2004,27(2):507-509
近几年有关认知发展心理机制的研究成为一个认知发展领域一个颇引人注目的内容.这些研究探讨了年龄、工作记忆、加工速度与流体智力之间的关系。研究发现.在流体智力的发展过程中,工作记忆可能比加工速度发挥着更直接、更一般的作用,而加工速度则对工作记忆的发展起直接调节作用。  相似文献   
497.
The transition from childhood to adolescence is a crucial period for the development of healthy behaviors to be sustained later in life. With obesity a leading public health problem, the promotion of healthy behaviors has the potential to make a huge impact. The current study evaluated Stage of Change progression in a large (N = 4158) computer-delivered, Transtheoretical Model-tailored intervention focusing on physical activity and fruit and vegetable consumption (FV). Markov models were used to explore stage transitions and patterns of discrete change from sixth to ninth grade. Nested model comparisons examined the consistency of these patterns across time and intervention condition. Major findings supported models in which participants were free to transition forward and backward to any of the stages, but higher probabilities were observed for remaining in the same stage or for transitioning one or two stages forward. Participants in the intervention group had higher probabilities of transitioning toward Maintenance, with more change occurring relative to the comparison group during transitions from grades six to eight but not for grades eight to nine.  相似文献   
498.
Children with ADHD demonstrate increased frequent “lapses” in performance on tasks in which the stimulus presentation rate is externally controlled, leading to increased variability in response times. It is less clear whether these lapses are also evident during performance on self-paced tasks, e.g., rapid automatized naming (RAN), or whether RAN inter-item pause time variability uniquely predicts reading performance. A total of 80 children aged 9 to 14 years—45 children with attention-deficit/hyperactivity disorder (ADHD) and 35 typically developing (TD) children—completed RAN and reading fluency measures. RAN responses were digitally recorded for analyses. Inter-stimulus pause time distributions (excluding between-row pauses) were analyzed using traditional (mean, standard deviation [SD], coefficient of variation [CV]) and ex-Gaussian (mu, sigma, tau) methods. Children with ADHD were found to be significantly slower than TD children (< .05) on RAN letter naming mean response time as well as on oral and silent reading fluency. RAN response time distributions were also significantly more variable (SD, tau) in children with ADHD. Hierarchical regression revealed that the exponential component (tau) of the letter-naming response time distribution uniquely predicted reading fluency in children with ADHD (< .001, ΔR2 = .16), even after controlling for IQ, basic reading, ADHD symptom severity and age. The findings suggest that children with ADHD (without word-level reading difficulties) manifest slowed performance on tasks of reading fluency; however, this “slowing” may be due in part to lapses from ongoing performance that can be assessed directly using ex-Gaussian methods that capture excessively long response times.  相似文献   
499.
Although the relationship between age-related cognitive decline and saccadic eye movement (SEM) deficits has been outlined, specific cognitive alterations underlying age-related changes in saccadic performance remain unclear. This study attempted to better understand the nature of aging effects on SEMs. We compared SEMs in younger and older adults in prosaccade (PS) and antisaccade (AS) tasks under gap, step, and overlap conditions. We also examined relationships between these performances and several neuropsychological scores. Twenty-eight younger adults (YA), 24 older adults under 65 years (OA<65) and 24 over 65 years (OA>65) of age completed a neuropsychological evaluation, PS and AS tasks. Our results showed that latencies, AS cost, time to correct AS errors, and uncorrected AS, increased with aging. YA showed higher overlap effects than OA>65 and OA<65. Importantly, correlations and regressions revealed close relationships not only between latencies and processing speed measures but also between the AS cost and the inhibition process measures. Correct saccades and the time to correct AS errors were closely related to the inhibition process and cognitive flexibility measures. These findings suggest that the progressive age-related decline of processing speed and executive attention are associated with, and can be highlighted though SEMs in PS and AS tasks.  相似文献   
500.
In a context of development of the learning society, characterized by increasing and diversifying public received to university, this research aims to understand the student's experience of adults undertaking a university program and young graduates. Three transitional processes (Masdonati & Zittoun, 2012) were studied: identity adjustment, development of skills, and meaning making. The analysis of semi-structured interviews conducted at the University Paris Ouest at the end of the first semester with twenty students shows that young graduates evoke a quest for adult identity, and gradual empowerment, and adults who undertaking a university program evokes identity et behavioral changes.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号