首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   5106篇
  免费   24篇
  国内免费   1篇
  2020年   10篇
  2018年   125篇
  2017年   108篇
  2016年   193篇
  2015年   107篇
  2014年   42篇
  2013年   133篇
  2012年   283篇
  2011年   280篇
  2010年   29篇
  2009年   40篇
  2008年   60篇
  2007年   52篇
  2006年   58篇
  2005年   1343篇
  2004年   677篇
  2003年   468篇
  2002年   161篇
  2001年   38篇
  2000年   21篇
  1999年   31篇
  1998年   13篇
  1997年   12篇
  1994年   23篇
  1992年   31篇
  1991年   49篇
  1990年   60篇
  1989年   50篇
  1988年   32篇
  1987年   49篇
  1986年   44篇
  1985年   37篇
  1984年   28篇
  1983年   27篇
  1982年   10篇
  1981年   17篇
  1979年   36篇
  1978年   18篇
  1977年   16篇
  1976年   15篇
  1975年   29篇
  1974年   41篇
  1973年   30篇
  1972年   26篇
  1971年   28篇
  1970年   19篇
  1969年   20篇
  1968年   17篇
  1967年   18篇
  1966年   16篇
排序方式: 共有5131条查询结果,搜索用时 15 毫秒
61.
In forensic psychology, recommendations that courts request when granting one of the parents the right of child upbringing after a divorce pose a problem for the person who is required to give such expert judgment. The authors describe the difficult situation he faces when having to decide for and, at the same time, against one of the parents. A good knowledge of family psychology and pathopsychology is essential, and for drawing up the expertise and stating his reasons, the expert requires methodical resources. The authors describe four procedures of relational diagnosis and recommend the combined use of these in conjunction with methods that have been employed so far.  相似文献   
62.
The number of active sweat glands (PSI), heart rate, systolic (SBP) and diastolic blood pressure (DBP) were assessed every 2 minutes in 109 male blood donors. Three measurements were taken at the beginning (adaptation phase), three later but before blood donation (baseline), one during the venous puncture (phase 3), three thereafter but still during donation (phase 4), and four after removal of the cannula (phase 5). Analysis of variance yielded significant differences between phases; PSI and SBP behaved similarly, decreasing from adaptation to baseline, rising during puncture, and decreasing again thereafter. Mean within-subject correlations between variables were significantly above 0. Between-subjects correlations were significantly negative for PSI and DBP. This is best explained by the influence of age on both variables. Correlations of PSI values as determined by three raters had a mean of 0.90. The study shows that the PSI is a very sensitive indicator of stress that is easily accessible also in field studies.  相似文献   
63.
An investigation was made into the extent and time course of anticipatory coarticulation in the speech of two normal and two anterior aphasic, German-speaking subjects. Both labial and velar coarticulation gestures were investigated. Subjects produced sentences containing target words contrasting in postconsonantal vowel rounding (e.g., [geli:ge]/[gely:gel]) and in nasality (e.g., [ti:de]/[ti:ne]). Speech kinematics were monitored by means of electromagnetic articulography. The data revealed that for correct productions, aphasic speakers' coarticulatory patterns were more highly variable than those of control subjects. These differences, however, were found chiefly for spatial displacement characteristics, while the temporal aspects of articulator movement necessary for anticipatory coarticulation appeared largely intact. Articulator mistiming did not appear to explain a small corpus of stop/nasal substitution errors produced by one of the aphasic speakers.  相似文献   
64.
This study describes the results of a retrospective review of patients' charts who had an advanced directive (AD) and who were hospitalized in a tertiary, acute care teaching hospital. The purpose of the review was to understand from clinical, sociological, ethical and legal perspectives the nature and utility of ADs. Findings and implications of the review are discussed in terms of: patient demographics; diagnoses; quality of ADs; influence of ADs on clinical decisions; and legal aspects of ADs.  相似文献   
65.
As the AIDS epidemic continues unabated, there is growing clinical evidence that the catastrophic nature of this disease is creating a second category of trauma casualties. They are the health care practitioners who witness the narratives of those who are living with and dying from AIDS. This article examines how multiple AIDS-related deaths of group members exert a traumatizing effect on group therapists, creating vicarious traumatization. Vignettes are presented that illustrate reactions associated with traumatic stress, including death images, survivors' guilt, psychic numbing, suspicion of counterfeit nurturance, and struggle for meaning. Possible therapeutic interventions for group therapists coping with multiple deaths are also explored.The author wishes to acknowledge the endeavors of the volunteer group therapists and the Clinical Group Services staff of the Gay Men's Health Crisis of New York City, who provide group therapy to over 900 clients a week. This article is written in admiration of their extraordinary effort and dedication.  相似文献   
66.
This paper addresses a problem in reporting scientific research. The problem is how to distinguish between justifiable and unjustifiable data selection. Robert Millikan is notorious for an infamous remark that he used all his data when in fact he had used a selection. On this basis he has been accused of fraud. There is a tension here — historians and his defenders see his selection as understandable and legitimate, while current statements about the Responsible Conduct of Research imply his selection was illegitimate. This paper discusses two main issues that arise in assessing his conduct, whether he was intentionally misleading and whether he actually did mislead the scientific community about some facts of nature. It is argued that he was not intentionally misleading, and that it is unlikely that he misled the scientific community.  相似文献   
67.
Inhibition of protein synthesis by anisomycin for a short duration impairs memory of a one-trial inhibitory avoidance task in rats. Memory of escape conditioning involving eight trials is disrupted only if the duration of protein synthesis is prolonged by repeated injections. In marked contrast, olfactory memory of rats trained on two odor discriminations is not affected by anisomycin even if the duration of inhibition is prolonged and the number of trials is reduced to a minimum. In previous work, leupeptin, a thiol proteinase inhibitor, was shown to impair olfactory discrimination learning, but left inhibitory and avoidance conditioning intact. Together, these results provide a pharmacological double dissociation of memory, and suggest that the same chemistries, or mixtures of chemistries, may not be involved in all types of memory.  相似文献   
68.
A behavioral analysis of specific dyslexia is contrasted with traditional genetic, neurological and developmental theories which hold that the dyslexic's inability to read is based on impaired intellectual functioning and decreased perceptual and attentional skills caused by a biological limitation. Two groups of six children, aged 9 and 10 years and comprised of dyslexic and non-dyslexic subjects, were given either traditional remedial reading treatment or behavior therapy consisting of the Staats Motivated Action Reading Technique. Both dyslexic and non-dyslexic subjects receiving the behavioral intervention significantly improved in reading achievement to approximately the same degree, and the dyslexic subjects improved in several perceptual and attentional measures as well. These results are taken to support the position that the specific dyslexia syndrome is subject to the laws of learning and can be viewed as a function of a deficient learning history.  相似文献   
69.
Lesions localized to specific areas of the amygdala and overlying cortex in rats produced differential effects in several behavioral tasks. Three different types of lesions were tested: central, basolateral, and cortex lateral to the amygdala. Lesions restricted to the central nucleus produced increased activity on all parameters studied in an open-field test, but the other two groups were not changed. In one-way active avoidance all three groups with lesions showed deficits. The most pronounced change was observed in the central group. All groups showed the same degree of retention loss, but in forced extinction of one-way active avoidance after retraining, the cortical and basolateral groups were most defective. A fear-reduction hypothesis is proposed for the central lesion. The basolateral and cortical areas may be more specifically involved in passive avoidance behavior.  相似文献   
70.
The antidepressants desipramine and imipramine were compared within the framework of a multiclinical study performed under the conditions of a controlled clinical experiment. There has been found a time-different remission of affective symptoms, which was not detectable for the inhibition of drive. The tachythymoleptic action of desipramine is discussed with reference to these results. Evaluation of the possibility of controlling affects shows different ranges of activity of desipramine and imipramine, with desipramine influencing especially negative psychoenergetic symptoms in the area of drives and emotions and imipramine, restrictive symptoms in addition to differential phenomena of the psychomotor expression.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号