全文获取类型
收费全文 | 2245篇 |
免费 | 87篇 |
专业分类
2332篇 |
出版年
2021年 | 19篇 |
2020年 | 26篇 |
2019年 | 29篇 |
2018年 | 61篇 |
2017年 | 49篇 |
2016年 | 62篇 |
2015年 | 46篇 |
2014年 | 50篇 |
2013年 | 250篇 |
2012年 | 81篇 |
2011年 | 98篇 |
2010年 | 64篇 |
2009年 | 69篇 |
2008年 | 90篇 |
2007年 | 99篇 |
2006年 | 76篇 |
2005年 | 84篇 |
2004年 | 84篇 |
2003年 | 78篇 |
2002年 | 75篇 |
2001年 | 37篇 |
2000年 | 37篇 |
1999年 | 28篇 |
1998年 | 38篇 |
1997年 | 33篇 |
1996年 | 32篇 |
1995年 | 37篇 |
1994年 | 37篇 |
1993年 | 36篇 |
1992年 | 27篇 |
1991年 | 21篇 |
1990年 | 34篇 |
1989年 | 36篇 |
1988年 | 33篇 |
1987年 | 21篇 |
1986年 | 23篇 |
1985年 | 28篇 |
1984年 | 30篇 |
1983年 | 24篇 |
1982年 | 30篇 |
1981年 | 28篇 |
1980年 | 22篇 |
1979年 | 15篇 |
1978年 | 25篇 |
1977年 | 10篇 |
1976年 | 20篇 |
1975年 | 19篇 |
1973年 | 12篇 |
1972年 | 9篇 |
1971年 | 10篇 |
排序方式: 共有2332条查询结果,搜索用时 0 毫秒
1.
2.
This study examined information communication technologies and workplace friendship dynamics. Employees reported factors that influenced their initiation of friendship with a coworker and reported patterns and perceptions of communication with their workplace friend via different communication methods. Results indicated that personality, shared tasks, and perceived similarity are the most important factors to coworker friendship initiation, and the importance of physical proximity to workplace friendship is diminishing in the electronically connected workplace. Results confirm the primacy of face‐to‐face interaction for workplace friendship initiation and maintenance. E‐mail, phone, and texting were also central to communication among workplace friends. The amount of time spent telecommuting affected workplace friendship initiation and communication. Finally, generational differences were identified with respect to Internet‐based communication methods. 相似文献
3.
4.
5.
Jacqueline M. Golding Patricia Gongla Arlene Brownell 《American journal of community psychology》1988,16(1):39-51
Survey respondents may inaccurately report mental health service utilization for motivational and cognitive reasons. There is little evidence on accuracy of self-reports of mental health service use, and this evidence suggests that respondents tend to underreport inpatient utilization. This study addressed the question of self-report accuracy by comparing survey data from a large probability sample to data from computerized records of publicly funded mental health services. Few inaccuracies in self-reporting were detected. However, despite the use of data bases that were unusually appropriate for verifying self-reports, several problems limited the feasibility of validation. Suggestions are offered for increasing the feasibility of validation in future studies. 相似文献
6.
Selma A. Lewis Jim Johnson Patricia Cohen Marc Garcia Carmen Noemi Velez 《Journal of abnormal child psychology》1988,16(4):459-471
Twenty-six suicide attempters, 9 to 18 years of age, were compared with 725 nonattempters on measures of school achievement, educational goals, socioeconomic status, and depression. As has been found in studies using clinical samples, suicide attempters in our communitybased sample had significantly lower school achievement than nonattempters. The relationship between attempted suicide and low school achievement seemed to be explained by the effects of depression. Lower-SES youth tended to be more likely to attempt suicide than higher-SES youths. However, SES appeared to have little effect on the relationship between attempted suicide and school achievement. Results also suggest that children of mothers with low educational goals for them may be more at risk for attempted suicide than youths whose mothers have higher educational goals for their children.This research was supported by the National Institute of Mental Health, Grant No. MH36971. 相似文献
7.
8.
We investigated the possible influence of common "demand characteristics" on the results on behavioral language laterality tasks. The demand characteristics were (1) whether Ss were or were not recruited for study according to their handedness, and (2) whether a detailed familial sinistrality inquiry was conducted before or after the tasks. Tasks were the Dichotic Consonant Vowel Task (DCVT) and the Bilateral Object Naming Latency Task (BONLT). Results showed no effect of demand characteristics on the BONLT. On the DCVT, however, prior inquiry regarding familial sinistrality was associated with significantly reduced right ear advantages (REAs). Interactions showed that the greatest reduction in REAs occurred in Ss with left-handedness in their families, who were asked about familial sinistrality prior to the tasks, who took the DCVT after the BONLT, and who were also recruited by handedness. Results, though generally reassuring regarding the robustness of the tasks against these sources of bias, raise some cautions for the DCVT. 相似文献
9.
10.
Judith M. Lavelle Melbourne F. Hovell M. Patricia West Dennis R. Wahlgren 《Journal of applied behavior analysis》1992,25(4):885-892
The Colorado Occupant Protection Project (COPP) intervention provided police with brief instruction concerning the importance of citations for drivers' failure to use child safety seats and special coupons to accompany citations. Coupons were exchangeable by drivers for a safety seat and brief training in its use, plus a waiver of the $50 citation fine. Over 4.5 years of archival records were employed, using an ABA design and a comparison community to evaluate the program. Few tickets were issued for nonuse of safety seats during the 3-year baseline in either community. Citations for nonuse of safety seats increased to over 50 per month during the intervention period at the test site, whereas rates remained essentially zero at the comparison site. After the COPP intervention was removed at the intervention site, citation rates for nonuse of safety seats decreased to about 15 per month. Differences between intervention conditions and settings were statistically significant. During the intervention, officers were 44 times more likely to write citations than were controls. Results suggested that a behavioral program can increase police citation writing for child protection purposes. 相似文献