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   226篇
  免费   7篇
  233篇
  2023年   3篇
  2022年   4篇
  2020年   5篇
  2019年   9篇
  2018年   9篇
  2017年   5篇
  2016年   13篇
  2015年   8篇
  2014年   6篇
  2013年   26篇
  2012年   14篇
  2011年   13篇
  2010年   8篇
  2009年   2篇
  2008年   4篇
  2007年   15篇
  2006年   4篇
  2005年   3篇
  2004年   7篇
  2003年   5篇
  2002年   3篇
  2001年   3篇
  2000年   4篇
  1999年   4篇
  1998年   2篇
  1997年   2篇
  1996年   3篇
  1995年   1篇
  1994年   1篇
  1992年   2篇
  1991年   3篇
  1990年   1篇
  1989年   2篇
  1988年   3篇
  1987年   2篇
  1986年   2篇
  1985年   1篇
  1984年   3篇
  1983年   2篇
  1979年   1篇
  1978年   1篇
  1975年   3篇
  1974年   3篇
  1973年   3篇
  1972年   3篇
  1971年   3篇
  1970年   4篇
  1969年   1篇
  1968年   1篇
  1967年   2篇
排序方式: 共有233条查询结果,搜索用时 0 毫秒
21.
Research suggests that children of single parents are at heightened risk of precocious sexual behavior, STDs, and other risky sexual outcomes. However, few such studies have addressed the type of single-parent family (single mother or single father), or differences across other-sex parent–child dyads. While gender essentialist models assume differences among youth living only with mothers or with fathers, constructivist models propose more flexible modes of parenting that lead to more similar outcomes. Using data from the National Longitudinal Study of Adolescent to Adult Health (n?=?2570) on youth between the ages of 15 and 19, we compared sexually-related outcomes among adolescents, both boys and girls, who lived with a single mother or a single father. These outcomes include sexual intercourse and knowledge, use of contraception, attitudes toward intimacy and pregnancy, and diagnosis of sexually-transmitted diseases. The results from linear and logistic regression models indicated few differences between single-mother and single-father families, or between same-sex and opposite-sex parent–child matches, using p values of .05 or smaller. Our results called into question essentialist models that posit higher risks for adolescents living with a particular parent or with an opposite-sex parent.  相似文献   
22.
Fischer et al. demonstrated that a centrally presented number can shift attention to the left/right when its magnitude is small/large. Two electrophysiological studies described these attentional effects as event-related potentials (ERPs) at centro-parietal sites. Since both studies used target detection tasks, it remains currently unknown whether similar results would be obtained with a discrimination task. We used ERPs to test whether digit cues also induce attention shifts when participants perform a feature-discrimination task on targets. ERPs were recorded whereas subjects discriminated the colour of lateral targets that were preceded by a central non-predictive digit. Analysis of cue-locked controlateral vs. ipsilateral ERP activity showed the emergence of early preparatory attention-directing components in parietal and frontal regions. Moreover, target-locked P1 components at occipito-parietal sites were significantly modulated by digit magnitude-target side congruency. These results demonstrate that irrelevant digit cues also bias sensory processing when embedded in a feature-discrimination task.  相似文献   
23.
Coordination in health care action teams is an important factor in clinical performance and patient safety. Implementing a high-fidelity in situ simulation study, we investigated the performance-relevant effects of task distribution, provide information without request (PIWR) and closed-loop communication (CLC) in 68 medical emergency teams (METs) composed of fully qualified clinicians. We differentiated between two task types: algorithm-driven and knowledge-driven tasks. We assigned two different emergency tasks to each task type. We proposed not only a direct relationship between the three coordination behaviours and clinical performance, but also a moderating role for the type of task. Only CLC was related to performance and also moderated by task type. There was no relationship between the coordination behaviours task distribution and PIWR and performance. We discuss the differential effects of the three coordination behaviours on performance and emphasize the importance of the task in team research. In particular, we highlight theoretical and practical implications.  相似文献   
24.
A content analysis of research published in the Journal of Counseling Psychology (JCP) was conducted for Volumes 46 (1999) through 56 (2009). The analysis involved the placement of 514 articles in 15 substantive content categories. In addition, we identified the most frequently published authors, most frequent institutional affiliations, and several reported demographic characteristics. The principal areas of research activity in the JCP were multiculturalism and/or diversity, research on development and evaluation of tests and measures, personality and adjustment, outcome research, and interpersonal and/or social support and/or attachment, with these categories accounting for 57% of the articles published. Over 40% of the samples reported were college students, with a large number of samples including both genders and indicating the ethnic breakdown. This content analysis revealed that the JCP has remained consistent with its stated mission while incorporating changes in the field in its publications.  相似文献   
25.
Three experiments are reported, investigating the effects of using 1 or 2 hands when making convergent low index of difficulty (ID) and visually controlled movements (2 hands meeting together). The experiments involved movements in four different cases—a probe held in the right hand and moved to a target held in the stationary left hand, vice versa of this arrangement, both hands moving with the probe in the right hand and target in the left hand, and vice-versa of this arrangement. Experiments were the standard Fitts’ paradigm, moving a pin into a hole and a low-ID task. In Fitts’ task, 2-hand movements were faster than 1 hand only at higher IDs; this was also the case in the pin-to-hole transfer task and the movement times were lower when the pin was held in the preferred hand. Movements made with low ID showed a small effect of 1- or 2-handed movements, with the effective amplitude of the movement being reduced by about 20% when 2 hands were used.  相似文献   
26.
27.
28.
Recent work on metacognition indicates that monitoring is sometimes based itself on the feedback from control operations. Evidence for this pattern has not only been shown in adults but also in elementary schoolchildren. To explore whether this finding can be generalized to a wide range of age groups, 160 participants from first to eighth grade participated in a study based on a self‐paced study time (ST) allocation paradigm. In contrast to previous studies, picture pairs instead of word pairs were used as stimuli to compensate for reduced reading skills in younger participants. Actual ST and judgments of learning (JOLs) made at the end of each study trial were used as core variables. The results are in line with previous findings, in that children's JOLs decreased with increasing ST, suggesting that JOLs were based on the memorizing effort heuristic that easily learned items are more likely to be remembered. Weaker inverse relationship between JOLs and ST was found for the younger children. Overall, these results underline the importance of mnemonic cues in shaping metacognitive feelings not only in adults but also in older children and expose a developmental trend in their use along childhood.  相似文献   
29.
30.
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