全文获取类型
收费全文 | 2163篇 |
免费 | 84篇 |
专业分类
2247篇 |
出版年
2020年 | 29篇 |
2019年 | 34篇 |
2018年 | 52篇 |
2017年 | 46篇 |
2016年 | 55篇 |
2015年 | 33篇 |
2014年 | 38篇 |
2013年 | 239篇 |
2012年 | 60篇 |
2011年 | 79篇 |
2010年 | 54篇 |
2009年 | 35篇 |
2008年 | 73篇 |
2007年 | 79篇 |
2006年 | 72篇 |
2005年 | 78篇 |
2004年 | 74篇 |
2003年 | 61篇 |
2002年 | 58篇 |
2001年 | 39篇 |
2000年 | 33篇 |
1999年 | 38篇 |
1998年 | 35篇 |
1997年 | 20篇 |
1996年 | 30篇 |
1995年 | 24篇 |
1994年 | 22篇 |
1993年 | 23篇 |
1992年 | 19篇 |
1991年 | 20篇 |
1990年 | 22篇 |
1989年 | 21篇 |
1988年 | 28篇 |
1987年 | 19篇 |
1986年 | 24篇 |
1985年 | 31篇 |
1984年 | 33篇 |
1983年 | 20篇 |
1982年 | 33篇 |
1981年 | 30篇 |
1980年 | 29篇 |
1979年 | 32篇 |
1978年 | 24篇 |
1977年 | 26篇 |
1976年 | 29篇 |
1975年 | 26篇 |
1974年 | 33篇 |
1973年 | 29篇 |
1971年 | 20篇 |
1970年 | 21篇 |
排序方式: 共有2247条查询结果,搜索用时 15 毫秒
101.
102.
Rosenthal SL Griffith JO Succop PA Biro FM Lewis LM DeVellis RF Stanberry LR 《Adolescence》2002,37(145):83-92
This longitudinal study examined adolescent girls' perception of control over sexually transmitted disease (STD) acquisition. Participants were asked questions regarding their perception of their STD locus of control (internal control; control by parents, partners, peers, and health care providers; and chance) at two waves of data collection. Of the 116 participants (mean age = 17 years), 82% were African-American and 18% were Caucasian. Responses to the measure of locus of control were significantly correlated across a 6-month interval. The responses regarding internal control, control by partner, and chance were not related to the acquisition of an STD in the next 6 months. Further, they were not influenced by an STD in the preceding 6 months. These results indicate that responses to a locus of control measure were stable over a 6-month period, and internal, partner, and chance locus of control perceptions seem to be neither determined by STD experience nor directly related to future STD acquisition. However, understanding an individual's locus of control may be helpful in providing appropriate counseling. Future research could examine how adolescent girls form their perceptions of control over STD acquisition. 相似文献
103.
Yaruss JS Quesal RW Reeves L Molt LF Kluetz B Caruso AJ McClure JA Lewis F 《Journal of Fluency Disorders》2002,27(2):115-33; quiz 133-4
Support groups are rapidly becoming an important part of the recovery process for many people who stutter, and a growing number of speech-language pathologists (SLPs) are encouraging their clients to participate in support groups. At present, however, little is known about the individuals who join stuttering support groups and the benefits they derive from their participation. This study surveyed members of the National Stuttering Association (NSA) to learn about their experiences in support groups, as well as their experiences in speech therapy. Respondents were 71 people who attended the 1999 NSA conference in Tacoma, WA. The majority of respondents had participated in treatment several times during their lives, using a variety of techniques. Respondents who had participated in fluency-shaping treatments were more likely to report that they had experienced a relapse than those who had participated in stuttering modification or combined treatments. Also, there was a strong positive correlation between respondents' satisfaction with treatment and their judgments of clinicians' competence, suggesting that improved training for SLPs should lead to improved treatment for people who stutter. Results will be used to provide a foundation for further evaluations of the benefits of support group participation for people who stutter. EDUCATIONAL OBJECTIVES: The reader will learn (a) that many people who participate in the NSA have had numerous and varied experiences with speech treatment throughout their lives, (b) which aspects of treatment and support group participation are seen as most beneficial for people who participate in the NSA. 相似文献
104.
The objective of this research was to test substance-related and non-substance-related psychiatric disorders as predictors of attempted suicide among adolescents. Ninety-six psychiatrically disordered suicide attempters were matched one-to-one to 96 psychiatrically disordered non-attempters on age, race, gender, and the presence/absence of major depression. Conditional logistic regression was used to test psychiatric risk factors for their power to predict attempted suicide among adolescents. Bipolar disorder, cocaine use disorders, and conduct disorder were found to be predictive of attempted suicide in univariate testing. Bipolar disorder, inhalant use disorders, cocaine use disorders, and hallucinogen use disorders were found to be predictive of attempted suicide, after adjusting for all other covariates. Loglinear analyses revealed high odds ratios associated with the comorbidities of alcohol use disorder with conduct disorder and drug use disorders with conduct disorder in both groups. Higher rates of cocaine use disorder/conduct disorder, hallucinogen use disorder/conduct disorder, and alcohol use disorder/ conduct disorder were found among suicide attempters. Evaluation of these particular comorbid conditions should be part of the adolescent suicide risk assessment. 相似文献
105.
106.
Fabry disease in genetic counseling practice: recommendations of the National Society of Genetic Counselors 总被引:3,自引:0,他引:3
Bennett RL Hart KA O'Rourke E Barranger JA Johnson J MacDermot KD Pastores GM Steiner RD Thadhani R 《Journal of genetic counseling》2002,11(2):121-146
The objective of this document is to provide health care professionals with recommendations for genetic counseling and testing of individuals with a suspected or confirmed diagnosis of Fabry disease, with a family history of Fabry disease, and those identified as female carriers of Fabry disease. These recommendations are the opinions of a multicenter working group of genetic counselors, medical geneticists, and other health professionals with expertise in Fabry disease counseling, as well as an individual with Fabry disease who is a founder of a Fabry disease patient advocacy group in the United States. The recommendations are U.S. Preventive Task Force Class III, and they are based on clinical experience, a review of pertinent English-language articles, and reports of expert committees. This document reviews the genetics of Fabry disease, the indications for genetic testing and interpretation of results, psychosocial considerations, and references for professional and patient resources. These recommendations should not be construed as dictating an exclusive course of management, nor does use of such recommendations guarantee a particular outcome. The professional judgment of a healthcare provider, familiar with the facts and circumstances of a specific case, will always supersede these recommendations. 相似文献
107.
Learning directions of objects specified by vision,spatial audition,or auditory spatial language 下载免费PDF全文
Klatzky RL Lippa Y Loomis JM Golledge RG 《Learning & memory (Cold Spring Harbor, N.Y.)》2002,9(6):364-367
The modality by which object azimuths (directions) are presented affects learning of multiple locations. In Experiment 1, participants learned sets of three and five object azimuths specified by a visual virtual environment, spatial audition (3D sound), or auditory spatial language. Five azimuths were learned faster when specified by spatial modalities (vision, audition) than by language. Experiment 2 equated the modalities for proprioceptive cues and eliminated spatial cues unique to vision (optic flow) and audition (differential binaural signals). There remained a learning disadvantage for spatial language. We attribute this result to the cost of indirect processing from words to spatial representations. 相似文献
108.
109.
110.
Biobehavioral responses to stress in females: tend-and-befriend, not fight-or-flight 总被引:29,自引:0,他引:29
Taylor SE Klein LC Lewis BP Gruenewald TL Gurung RA Updegraff JA 《Psychological review》2000,107(3):411-429
The human stress response has been characterized, both physiologically and behaviorally, as "fight-or-flight." Although fight-or-flight may characterize the primary physiological responses to stress for both males and females, we propose that, behaviorally, females' responses are more marked by a pattern of "tend-and-befriend." Tending involves nurturant activities designed to protect the self and offspring that promote safety and reduce distress; befriending is the creation and maintenance of social networks that may aid in this process. The biobehavioral mechanism that underlies the tend-and-befriend pattern appears to draw on the attachment-caregiving system, and neuroendocrine evidence from animal and human studies suggests that oxytocin, in conjunction with female reproductive hormones and endogenous opioid peptide mechanisms, may be at its core. This previously unexplored stress regulatory system has manifold implications for the study of stress. 相似文献