全文获取类型
收费全文 | 3452篇 |
免费 | 36篇 |
国内免费 | 2篇 |
专业分类
3490篇 |
出版年
2024年 | 15篇 |
2021年 | 31篇 |
2020年 | 48篇 |
2019年 | 70篇 |
2018年 | 102篇 |
2017年 | 87篇 |
2016年 | 93篇 |
2015年 | 79篇 |
2014年 | 82篇 |
2013年 | 396篇 |
2012年 | 128篇 |
2011年 | 124篇 |
2010年 | 96篇 |
2009年 | 75篇 |
2008年 | 114篇 |
2007年 | 117篇 |
2006年 | 105篇 |
2005年 | 114篇 |
2004年 | 113篇 |
2003年 | 105篇 |
2002年 | 110篇 |
2001年 | 54篇 |
2000年 | 47篇 |
1999年 | 56篇 |
1998年 | 62篇 |
1997年 | 37篇 |
1996年 | 66篇 |
1995年 | 55篇 |
1994年 | 56篇 |
1993年 | 52篇 |
1992年 | 53篇 |
1991年 | 39篇 |
1990年 | 43篇 |
1989年 | 44篇 |
1988年 | 33篇 |
1987年 | 40篇 |
1986年 | 36篇 |
1985年 | 51篇 |
1984年 | 35篇 |
1983年 | 50篇 |
1982年 | 41篇 |
1981年 | 34篇 |
1980年 | 33篇 |
1979年 | 26篇 |
1978年 | 29篇 |
1977年 | 27篇 |
1976年 | 25篇 |
1975年 | 17篇 |
1974年 | 24篇 |
1973年 | 18篇 |
排序方式: 共有3490条查询结果,搜索用时 15 毫秒
981.
982.
Margaret J. Briggs-Gowan Alice S. Carter Mary Schwab-Stone 《Journal of abnormal child psychology》1996,24(6):749-765
The relationship between maternal affective symptomatology and discrepancies in maternal reports of child symptoms, relative to teacher and child reports, was evaluated in a community sample of 188 children ages 9–12 years. Mothers, teachers, and children were administered a structured interview about child psychopathology. In general, mothers reported more child behavior problems than children and teachers, regardless of maternal symptomatology. However, maternal affective symptoms were associated with discrepancies between mothers' and daughters' reports and between mothers' and teachers' reports of girls' externalizing symptoms. Furthermore, mothers who reported high levels of both anxiety and depressive symptomatology tended to report a large number of symptoms that were not confirmed by either their daughters or teachers. Findings are discussed as possible evidence of the role of maternal affective symptomatology in both actual increases in child symptomatology and maternal reporting distortions. Although maternal depressive and anxiety symptoms shared variance in reporting discrepancies, only anxiety explained unique variance. Consistent with previous studies, cross-informant agreement was modest to moderate (r= .16 to .50) and all informants reported more behavior problems in boys than in girls.
This work was undertaken with the support of National Institute of Mental Health Grants MH43909 and MH46717. 相似文献
983.
Cummings ML 《Science and engineering ethics》2006,12(4):701-715
The Accreditation Board of Engineering and Technology (ABET) has declared that to achieve accredited status, “engineering
programs must demonstrate that their graduates have an understanding of professional and ethical responsibility.” Many engineering
professors struggle to integrate this required ethics instruction in technical classes and projects because of the lack of
a formalized ethics-in-design approach. However, one methodology developed in human-computer interaction research, the Value-Sensitive
Design approach, can serve as an engineering education tool which bridges the gap between design and ethics for many engineering
disciplines. The three major components of Value-Sensitive Design, conceptual, technical, and empirical, exemplified through
a case study which focuses on the development of a command and control supervisory interface for a military cruise missile. 相似文献
984.
Three-, four-, and five-year-old children's categorical and comparative understanding of high and low were examined in two experiments. Categorical knowledge was assessed by presenting subjects with a single object at varying heights (from 0 to five feet above the ground), and asking if the object was high or low. Comparative understanding of the terms was assessed by showing children two objects at a time and asking which was higher or lower. We observed two patterns of performance in children's categorical treatments: younger children in particular defined disjoint categories for high and low such that they only labelled the extreme heights as high or low, and maintained that middle heights were neither high nor low. Older children defined either-or categories such that all heights were labelled either high or low. We also found that children who defined either-or categories made correct comparative judgments across the entire range of variation whereas children who defined disjoint categories could only judge which of two objects was higher if the objects were not low (at 0 and 1 feet) and which of the objects was lower if the objects were not high (at 4 and 5 feet). The results were interpreted as reflecting a lack of appreciation that the terms are interdefined as negations of each other, and were discussed in terms of the similar semantic-congruity effects found in adults. 相似文献
985.
Susan J. Wood Jane Y. Murdock Mary E. Cronin Nancy M. Dawson Peggy C. Kirby 《Journal of Behavioral Education》1998,8(2):263-279
The purposes of this study were to evaluate the effects of self-monitoring on increasing the on-task behaviors of four at-risk middle school students, and to examine its indirect effects on academic performance. Additionally, we attempted to develop and validate cost- and time-efficient procedures that typical classroom teachers could use. The data from a multiple baseline design across three academic settings, replicated with four students, revealed immediate increases in on-task behavior as each student began to self-monitor in each sequential setting. The data also revealed slightly higher levels of academic performance and, in most instances, gradually accelerating trends. These findings suggest that self-monitoring is a cost- and time-efficient procedure that classroom teachers can use to teach at-risk students to manage their own behaviors. 相似文献
986.
Mary Jane Rotheram-Borus Marya Gwadz M. Isa Fernandez Shobha Srinivasan 《American journal of community psychology》1998,26(1):73-96
Examined the effectiveness of an HIV intervention program among 151 adolescents ages 13 to 24 years who were randomly assigned to (a) seven sessions of 1.5 hr each (10.5 hr); (b) three sessions of 3.5 hr each (10.5 hr); or (c) a no-intervention condition. Using cognitive-behavioral intervention strategies, social skills and HIV-related beliefs, perceptions, and norms were targeted in both the three- and seven-session, small-group intervention conditions. Regression analysis indicated that over 3 months, the number of unprotected risk acts and the number of sexual partners were lower in the seven-session condition compared to the other conditions. Factors mediating risk acts changed in a complex manner: For example, perceived vulnerability increased for those with initially lower vulnerability scores among youths in the seven-session condition compared to others. Self-approval of condom use was also higher for those with initially low scores in the seven-session compared to the three-session condition. Self-efficacy for risk avoidance and condom use was significantly higher in the three-session condition for those with initially low scores compared to other groups. On the role-play measure, those with higher baseline scores in the low-pressure situation improved significantly only in the three-session intervention; in the high-pressure situation, the participants reported significantly higher scores in the seven-session intervention, and those with higher scores improved the most. Results suggest the importance of multisession HIV intervention programs to be delivered with fidelity in community settings. 相似文献
987.
This study examines data from questionnaires to establish the prevalence and correlates of women's binge drinking, defined as four or more drinks per episode, at women's colleges ( n = 508) and at coeducational colleges ( n = 9,624). Results showed that women at women's colleges binged less frequently, had fewer alcohol-related problems, experienced fewer negative effects of others' drinking, and were less likely to drink and drive. The correlates of binge drinking were similar for the two groups of women. The differences appear to be related not to the quantity or amount of socializing but to its quality. The absence of fraternities and coeducational dormitories, the reduced likelihood of a party-centered lifestyle, and self-selection factors at women's colleges all may contribute to a healthier environment for women. Interventions designed to lower the risk of college binge drinking should further explore the peer-group contexts in which problem drinking is reduced. 相似文献
988.
Consistent evidence demonstrates that many women who encounter the trauma of rape experience a range of both acute reactions and chronic psychological sequelae. This article reviews both the short- and long-term psychological adjustment issues associated with rape. In addition, we propose a culturally inclusive ecological model of sexual assault recovery (CIEMSAR), which integrates and extends existing models to better examine the complex factors leading to differential postrape adjustment. Important components of the CIEMSAR are placing rape in the broader sociocultural context of the United States and explicated socioracial and ethnic factors influencing the recovery process. The five primary factors of CIEMSAR are outlined, including (a) macrosystem or sociocultural context factors; microsystem/individual factors such as (b) assault characteristics, (c) person variables, (d) coping responses; and mesosystems factors such as (e) social-support systems. Suggestions for future research are also provided. 相似文献
989.
990.
Joseph M. Byrne Joan E. Backman Robert D. Gates Mary Clark-Touesnard 《Journal of abnormal child psychology》1986,14(2):287-296
The Personality Inventory for Children-Revised (PIC-R) is a parent-report measure of social-emotional adjustment for children 3 to 16 years of age. The present study examined the clinical value of the PIC-R by exploring the impact of age and developmental status on PIC-R profiles, particularly on the Psychosis (PSY) scale, within a sample of preschool and school-age children referred for assessment of suspected cognitive impairment and learning problems. Compared to school-age children, significantly more preschoolers obtained elevated scores on the Psychosis scale; those preschoolers with cognitive impairments were even more likely to obtain significantly elevated Psychosis scale scores, despite the absence of diagnosed childhood psychosis. No significant relationship was found between Psychosis scale elevations and cognitive impairment in the school-age group. The PIC-R was moderately accurate in identifying cognitively impaired preschoolers but only minimally accurate in identifying cognitively impaired school-age children. 相似文献