全文获取类型
收费全文 | 4506篇 |
免费 | 178篇 |
出版年
2020年 | 48篇 |
2019年 | 55篇 |
2018年 | 80篇 |
2017年 | 80篇 |
2016年 | 91篇 |
2015年 | 70篇 |
2014年 | 76篇 |
2013年 | 466篇 |
2012年 | 135篇 |
2011年 | 150篇 |
2010年 | 94篇 |
2009年 | 123篇 |
2008年 | 155篇 |
2007年 | 151篇 |
2006年 | 142篇 |
2005年 | 120篇 |
2004年 | 138篇 |
2003年 | 116篇 |
2002年 | 138篇 |
2001年 | 70篇 |
2000年 | 90篇 |
1999年 | 80篇 |
1998年 | 66篇 |
1997年 | 59篇 |
1996年 | 55篇 |
1995年 | 48篇 |
1994年 | 52篇 |
1993年 | 46篇 |
1992年 | 72篇 |
1991年 | 54篇 |
1990年 | 67篇 |
1989年 | 50篇 |
1988年 | 63篇 |
1987年 | 57篇 |
1986年 | 47篇 |
1985年 | 58篇 |
1984年 | 61篇 |
1983年 | 59篇 |
1981年 | 62篇 |
1980年 | 59篇 |
1979年 | 82篇 |
1978年 | 50篇 |
1977年 | 53篇 |
1976年 | 75篇 |
1975年 | 72篇 |
1974年 | 69篇 |
1973年 | 61篇 |
1971年 | 49篇 |
1969年 | 48篇 |
1968年 | 57篇 |
排序方式: 共有4684条查询结果,搜索用时 15 毫秒
141.
Rosemerry R. Blash M.S. Donald G. Unger Ph.D. 《Journal of child and family studies》1995,4(3):359-373
The role of perceived efficacy, parent support, and community involvement in the self-esteem and ethnic identity of 68 African-American male youth were investigated in this research. The results provided support for the distinctiveness of ethnic identity and self-esteem. A sense of mastery was positively associated with both self-esteem and ethnic identity. Parent support was associated with self-esteem, while community involvement and an appreciation of African-American heritage were positively related to ethnic identity. Implications for future research and the evaluation of prevention and support programs for youth are discussed. 相似文献
142.
Sex Roles - Two theories addressing the relationship between the socially desirable and undesirable elements of agency and communion have been proposed. In their 1979 study, Spence, Helmreich, and... 相似文献
143.
Donald B. Pope-Davis Thomas M. Ottavi 《Journal of counseling and development : JCD》1994,72(3):293-297
The purpose of this investigation was to assess the influence of White racial identity attitudes on racism. A total of 234 White undergraduate students participated in this investigation. The students completed the White Racial Identity Attitude Scale (Helms & Carter, 1990) and the New Racism Scale (Jacobson, 1985). Consistent with findings in previous research, White racial identity attitudes were predictive of racism. We also found gender and age differences in White racial identity attitudes. Implications of these findings are discussed in terms of the role of counselors in addressing racial awareness on college campuses. 相似文献
144.
Donald B. Pope-Davis Thomas M. Ottavi Thomas M. Ottavi 《Journal of counseling and development : JCD》1994,72(6):651-654
The authors examined the association between demographic variables and self-reported multicultural counseling competencies among counselors. A national sample of 220 counselors affiliated with university counseling centers participated in this investigation. Counselors responded to 40 Likert-type statements about multicultural awareness, knowledge, skills, and relationships. Results from a series of multivariate and univariate analyses indicated that Asian American and Hispanic counselors reported more multicultural knowledge than did White counselors, and African American, Asian American, and Hispanic counselors reported more competence in multicultural awareness and relationships than did White counselors. No effects were found for other demographic variables. Implications of these findings are discussed. 相似文献
145.
A survey investigated incidences where individuals intentionally hid objects but later forgot the item's location. Surveys from 111 younger and 99 older adults yielded the following prototypical scenario: the person hid the valuable 1 year ago to prevent theft, and waited 1 month before an initial 30-minute search, which included looking in dresser drawers plus 1.5 other locations. The person made three additional searches (total searches = 4) for the missing valuable over a 2 week period. Three-quarters of the hidden valuables were eventually found (usually by accident) about 1 month after hiding the object. About half of the time, the person had already searched the hiding area. Older adults typically hid jewellery from thieves, while younger adults hid money from friends and relatives. Older adults searched more often for longer periods of time for the hidden object, and took longer to eventually find the object, compared with younger adults. 相似文献
146.
Norman M. Kiracofe Patsy A. Donn Charles O. Grant Edward E. Podolnick Rosie P. Bingham Herbert R. Bolland Clarke G. Carney Judith Clementson Robert P. Gallagher Richard D. Grosz Lee Handy Janet H. Hansche Judith K. Mack Donald Sanz Lilly J. Walker Kerry T. Yamada 《Journal of counseling and development : JCD》1994,73(1):38-43
The accreditation standards outlined in the article are used by the International Association of Counseling Services, Inc., as the basis for the formal accreditation of college and university counseling programs throughout the United States and Canada. They reflect the program elements and practice standards that are deemed essential in a counseling center that provides high-quality services to students. 相似文献
147.
The use of facilitated communication with individuals with autism has generated considerable controversy over the past several years. Only recently has research begun appearing which examines the procedure using reasonable scientific controls to establish the validity of this form of communication. The present study assessed the validity of facilitated communication and evaluated the effects of facilitator influence with seven individuals with autism and mental retardation. Three individuals showed clear evidence of facilitator influence, another three showed no such influence, and one subject performed at chance levels. A follow-up session with the three subjects who showed no facilitator influence demonstrated that they also showed no unexpected language competence compared to their measured IQ and to assessment under standard conditions. Results are discussed in terms of significance for facilitated communication in general and in terms of the utility of the methodology as a means of demonstrating language competence or facilitator influence. 相似文献
148.
Richard L. Doty Richard Smith Donald A. Mckeown Jaya Raj 《Attention, perception & psychophysics》1994,56(6):701-707
It is not known whether nominally different olfactory tests actually measure dissimilar perceptual attributes. In this study, we administered nine olfactory tests, including tests of odor identification, discrimination, detection, memory, and suprathreshold intensity and pleasantness perception, to 97 healthy subjects. Aprincipal components analysis performed on the intercorrelation matrix revealed four meaningful components. The first was comprised of strong primary loadings from most of the olfactory test measures, whereas the second was comprised of primary loadings from intensity ratings given to a set of suprathreshold odorant concentrations. The third and fourth components had primary loadings that reflected, respectively, mean suprathreshold pleasantness ratings and a response bias measure derived from a yes/no odor identification signal detection task. In an effort to adjust for potential confounding influences of age, gender, smoking, and years of schooling on the component structure, a matrix of residuals from a multiple regression analysis, which included these variables, was also analyzed. A similar component pattern emerged. Overall, these findings suggest, in healthy subjects spanning a wide age range, that (1) a number of nominally distinct tests of olfactory function are measuring a common source of variance, and (2) some suprathreshold odor intensity and pleasantness rating tests may be measuring sources of variance different from this common source. 相似文献
149.
150.
Latent Structure of the Sources of Mathematics Self-Efficacy 总被引:2,自引:0,他引:2
Robert W. Lent Frederick G. Lopez Steven D. Brown Paul A. Gore Jr. 《Journal of Vocational Behavior》1996,49(3):292-308
General social cognitive theory and its career-specific elaborations posit four primary sources through which self-efficacy beliefs are acquired and modified: personal performance accomplishments, vicarious learning, social persuasion, and physiological states and reactions. We present two studies exploring the dimensionality of these sources within the context of career-relevant mathematics activities. In Study 1, 295 college students completed measures of the source variables. Testing two- through five-factor models, we found strongest support for a four-factor latent structure of the efficacy sources. In Study 2, involving 481 high school students, a five-factor model fit the data well. We also found evidence of a higher order factor structure in both samples. Several directions for further research on the sources of efficacy information are considered, along with implications for career and academic interventions. 相似文献