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   625篇
  免费   28篇
  2024年   3篇
  2023年   6篇
  2022年   7篇
  2021年   6篇
  2020年   17篇
  2019年   12篇
  2018年   26篇
  2017年   21篇
  2016年   19篇
  2015年   14篇
  2014年   17篇
  2013年   95篇
  2012年   37篇
  2011年   27篇
  2010年   27篇
  2009年   18篇
  2008年   36篇
  2007年   20篇
  2006年   26篇
  2005年   28篇
  2004年   21篇
  2003年   22篇
  2002年   14篇
  2001年   9篇
  2000年   8篇
  1999年   3篇
  1998年   8篇
  1997年   8篇
  1996年   8篇
  1995年   4篇
  1994年   6篇
  1993年   3篇
  1992年   9篇
  1991年   11篇
  1990年   8篇
  1988年   5篇
  1985年   3篇
  1983年   4篇
  1982年   7篇
  1981年   5篇
  1980年   3篇
  1979年   1篇
  1978年   3篇
  1977年   2篇
  1976年   3篇
  1975年   4篇
  1974年   2篇
  1971年   1篇
  1963年   2篇
  1960年   1篇
排序方式: 共有653条查询结果,搜索用时 31 毫秒
31.
This study evaluates a measurement model for Attention Deficit/Hyperactivity Disorder (ADHD). The DSM-IV divides 18 symptoms into two groups, inattentive and hyperactive/impulsive. Elementary school teachers rated 21,161 children in 4 locations: Spain, Germany, urban US, and suburban US. Confirmatory factor analysis suggested that the 2-factor model (inattention, hyperactivity/impulsivity) shows the best fit. A third factor, impulsivity, was too slight to stand-alone. Children with academic performance problems were distinguished by inattention, but children with behavior problems typically had elevations in inattention, hyperactivity, and impulsivity. Between-site differences were statistically significant, but so small that we conclude that same measurement model fits all 4 samples in 2 continents.  相似文献   
32.
33.
34.
Memory updating is the ability to select and update relevant information and suppress no-longer-relevant data. The few studies in this area, targeting mainly the verbal domain, have investigated and confirmed an age-related decline in working memory updating ability (De Beni & Palladino, 2004; Van der Linden, Bredart, & Beerten, 1994). The present research examines the ability of younger and older adults to update information in verbal and visuo-spatial running memory tasks. Results showed that the participants' performance was higher in the verbal than in the visuo-spatial task. Nonetheless, independently of the task domain, an age-related decline in updating performance was found. Moreover, analysis of serial positions suggested that, in the updating procedure, the participants were not attempting to actively maintain items, preferring to adopt a low-effort, "recency-based" strategy. The use of this type of strategy is more evident in older participants, as shown in both the accuracy performance and the proportion of intrusion errors.  相似文献   
35.
The history of colonization and persistent attempts at self‐governance in the Philippines parallel the beginnings of counseling in the country, which were largely influenced by the United States. Because of the Guidance and Counseling Act of 2004 and the Psychology Act of 2009, counseling is on its way to professionalization and regulation. Counseling is growing in depth and credibility, as evidenced by applications in practice that are not only indigenous but powerfully relevant.  相似文献   
36.
This study assessed a new microswitch arrangement for eyelid responses using an optic sensor placed above the cheekbone and a small sticker on the person's eyelid. This new arrangement, which was designed to avoid interference of the microswitch with the person's visual functioning, was tested on three adults with acquired brain injury and multiple (consciousness, communication, and motor) disabilities. The study was carried out according to a non-concurrent multiple baseline design across participants. Data showed the new microswitch arrangement was suitable for all three participants, who increased their responding during the intervention phase of the study when their responses allowed them to access preferred stimulation. Practical implications of the findings are discussed.  相似文献   
37.
This study investigated Filipino adolescents?? conceptualization of social support. While Western literature suggests that adolescents, in their developmental task of growing towards independence and individuality, prefer emotional support and acceptance in achieving these goals, it is worthwhile to discover what Filipino adolescents define as supportive in their lives, given a collectivist and interdependent cultural background. In-depth interviews were done with 89 male adolescents. Results reveal that social support among Filipino adolescents is conceptualized mainly as hands-on support. Advice, personal assistance, and being challenged are conceptualized as expressions of care and concern, rather than as intrusive acts. Furthermore, Filipino adolescents have a wide source of social support, with different social support providers perceived as having a particular niche in terms of the kind of social support they provide. Theoretical and practical implications of these findings are discussed.  相似文献   
38.
IM Pepperberg  S Carey 《Cognition》2012,125(2):219-232
A Grey parrot (Psittacus erithacus) had previously been taught to use English count words ("one" through "sih" [six]) to label sets of one to six individual items (Pepperberg, 1994). He had also been taught to use the same count words to label the Arabic numerals 1 through 6. Without training, he inferred the relationship between the Arabic numerals and the sets of objects (Pepperberg, 2006b). In the present study, he was then trained to label vocally the Arabic numerals 7 and 8 ("sih-none", "eight", respectively) and to order these Arabic numerals with respect to the numeral 6. He subsequently inferred the ordinality of 7 and 8 with respect to the smaller numerals and he inferred use of the appropriate label for the cardinal values of seven and eight items. These data suggest that he constructed the cardinal meanings of "seven" ("sih-none") and "eight" from his knowledge of the cardinal meanings of one through six, together with the place of "seven" ("sih-none") and "eight" in the ordered count list.  相似文献   
39.
40.
African American women at increased risk of HIV/sexually transmitted infection (STI) may engage in risky sex as a coping mechanism for depressed economic conditions. This study examines the association between high-risk sexual behavior and structural determinants of sexual health among a sample of young African American women. 237 young African American women (16–19 years old) from economically disadvantaged neighborhoods in North Carolina were enrolled into a randomized trial testing the efficacy of an adapted HIV/STI prevention intervention. Logistic regression analyses predicted the likelihood that young women reporting lack of food at home, homelessness and low future prospects would also report sexual risk behaviors. Young women reporting a lack of food at home (22 %), homelessness (27 %), and low perceived education/employment prospects (19 %) had between 2.2 and 4.7 times the odds as those not reporting these risk factors of reporting multiple sex partners, risky sex partners including older men and partners involved in gangs, substance use prior to sex, and exchange sex. Self-reported structural determinants of sexual health were associated with myriad sexual risk behaviors. Diminished economic conditions among these young women may lead to sexual risk due to hopelessness, the need for survival or other factors.  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