全文获取类型
收费全文 | 13823篇 |
免费 | 592篇 |
国内免费 | 13篇 |
出版年
2023年 | 72篇 |
2021年 | 117篇 |
2020年 | 213篇 |
2019年 | 265篇 |
2018年 | 359篇 |
2017年 | 357篇 |
2016年 | 372篇 |
2015年 | 268篇 |
2014年 | 347篇 |
2013年 | 1535篇 |
2012年 | 613篇 |
2011年 | 656篇 |
2010年 | 391篇 |
2009年 | 423篇 |
2008年 | 572篇 |
2007年 | 568篇 |
2006年 | 577篇 |
2005年 | 529篇 |
2004年 | 486篇 |
2003年 | 507篇 |
2002年 | 487篇 |
2001年 | 252篇 |
2000年 | 224篇 |
1999年 | 222篇 |
1998年 | 202篇 |
1997年 | 217篇 |
1996年 | 194篇 |
1995年 | 172篇 |
1994年 | 161篇 |
1993年 | 154篇 |
1992年 | 141篇 |
1991年 | 152篇 |
1990年 | 135篇 |
1989年 | 120篇 |
1988年 | 89篇 |
1987年 | 117篇 |
1986年 | 129篇 |
1985年 | 162篇 |
1984年 | 160篇 |
1983年 | 138篇 |
1982年 | 130篇 |
1981年 | 143篇 |
1980年 | 124篇 |
1979年 | 108篇 |
1978年 | 118篇 |
1977年 | 108篇 |
1976年 | 107篇 |
1975年 | 94篇 |
1974年 | 104篇 |
1973年 | 85篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
James R. Stagray David Downs Ronald K. Sommers 《Journal of psycholinguistic research》1992,21(6):511-524
We measured subjective-tone identification thresholds evoked by acoustically filtered complex tones and compared them to Mandarin-Chinese tone-phoneme identification thresholds previously measured under the same filtering conditions. Tone phonemes were identified at intensities below subjective-tone identification thresholds, suggesting subjective tone is not necessary for tone-phoneme identification. Lower subjective-tone thresholds evoked by resolved harmonics rather than unresolved harmonics were consistent with pattern recognition theories of pitch perception.The authors thank Donald Gans and Richard Klich for all their help. 相似文献
52.
David A. Julian Teresa W. Julian Barry J. Mastrine Pauline Wessa Elizabeth Atkinson 《American journal of community psychology》1992,20(6):799-809
Analyzed case records to determine the costs and service usage patterns for a group of 25 youth randomly selected from the case load of a regional mental health agency. Study participants had extensive histories of publicly supported psychiatric hospitalizations. An average of 36.2 contacts per youth (905 total contacts) with human services providers were documented. Approximately 2 out of every 5 contacts resulted in out-of-home placements. The estimated cost of providing services to the 25 youth exceeded 3 million dollars. The types and costs of treatment services provided to study participants are discussed. 相似文献
53.
Arthur D. Anastopoulos David C. Guevremont Terri L. Shelton George J. DuPaul 《Journal of abnormal child psychology》1992,20(5):503-520
Prior research has shown that parenting stress levels can be quite high among families of children with attention deficit hyperactivity disorder (ADHD). This study investigated the degree to which such stress was related not only to the child's ADHD, but also to various other child, parent, and family-environment circumstances. Multimethod assessments were conducted on 104 clinic-referred children with ADHD. Data collected from these subjects were entered into hierarchical multiple-regression analyses, utilizing the Parenting Stress Index as the criterion. The results showed that child and parent characteristics accounted for a substantial portion of the variance in overall parenting stress. The child's oppositional-defiant behavior and maternal psychopathology were especially potent predictors. The severity of the child's ADHD, the child's health status, and maternal health status also emerged as significant predictors. These findings are discussed in terms of their impact upon the clinical management of children with ADHD.The authors are grateful to Mary Maher and Paula Nevins for their assistance in collecting and coding the data. The authors would also like to thank Dr. Kenneth Fletcher for his helpful comments regarding the statistical analyses. 相似文献
54.
A multivariate hierarchical model of specific cognitive abilities was fitted to data from 7-year-old adopted and nonadopted sibling pairs in the Colorado Adoption Project in order to assess differential genetic influence on specific mental abilities. Model fitting results and Schmid-Leiman (Schmid & Leiman, 1957) transformations reveal significant heritable variation for verbal, spatial, and memory factors independent of general cognitive ability for the eight ability tests examined. In contrast, environmental influences are primarily measure-specific. The results suggest genetic effects in middle childhood that differentially influence mental ability scores. 相似文献
55.
56.
Traditionally, communication skills training has focused principally on overt behaviours that are clearly identifiable. In recent years there has been an increasing awareness that cognitive processes can have considerable influence on behaviour. An attempt was made to establish whether changes in cognitions occurred as a result of a behaviourally-based communication skills training programme in which there had been no explicit attempt to bring about such cognitive changes. More specifically, the study examined whether such a programme resulted in changes in aspects of the personal construct space of students on a Diploma in Careers Guidance course. The results offered some support for the hypothesis that the programme produced changes in the students' personal construct space. 相似文献
57.
58.
David Lester Rita Martin Trina Serrecchia Josette Sgro 《Personality and individual differences》1992,13(12)
The desire to merge identities with an intimate partner was found to be negatively related to psychoticism but related to other social desires, such as the desire for physical closeness and identifying with the achievements of others. 相似文献
59.
Royda Crose Donald R. Nicholas David C. Gobble Beth Frank 《Journal of counseling and development : JCD》1992,71(2):149-156
An expanded view of health is advocated for assessment and treatment of individual clients in helping them achieve and maintain their maximum potential for high-level wellness. In addition, moderating variables, such as culture, age, and gender differences, have an impact on every dimension of health and wellness. In this article a multidimensional systems model for wellness is described, and gender differences along those dimensions are reviewed. Application of the model and implications for counseling are discussed. Finally, two illustrative case examples, one man and one woman, are described. 相似文献
60.