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   3602篇
  免费   120篇
  国内免费   2篇
  3724篇
  2020年   29篇
  2019年   47篇
  2018年   57篇
  2017年   63篇
  2016年   69篇
  2015年   47篇
  2014年   59篇
  2013年   378篇
  2012年   103篇
  2011年   119篇
  2010年   81篇
  2009年   79篇
  2008年   127篇
  2007年   114篇
  2006年   112篇
  2005年   112篇
  2004年   93篇
  2003年   113篇
  2002年   119篇
  2001年   61篇
  2000年   48篇
  1999年   57篇
  1998年   41篇
  1997年   45篇
  1996年   44篇
  1995年   38篇
  1994年   47篇
  1993年   57篇
  1992年   42篇
  1991年   55篇
  1990年   49篇
  1989年   37篇
  1988年   41篇
  1987年   45篇
  1986年   39篇
  1985年   43篇
  1984年   65篇
  1983年   46篇
  1982年   55篇
  1981年   58篇
  1980年   39篇
  1979年   47篇
  1978年   41篇
  1977年   58篇
  1976年   52篇
  1975年   50篇
  1974年   53篇
  1973年   54篇
  1967年   28篇
  1966年   39篇
排序方式: 共有3724条查询结果,搜索用时 6 毫秒
961.
One method for identifying contingency relationships in a sequence of observed behaviors studies occurrences of matching behaviors at successive event or time steps from a criterion event. This paper briefly summarizes the method and presents a computer program for generating lag conditional probabilities and associated measures for assessing statistical significance.  相似文献   
962.
963.
This study investigated the relationships of metal levels and metal combinations to children's classroom behavior. Hair-metal concentrations of lead, arsenic, mercury, cadmium, and aluminum were determined in 80 randomly selected elementary-age children, who were also rated by their classroom teacher on the Walker Problem Behavior Identification Checklist (WPBIC). Parents were interviewed to control for confounding variables that may have affected behavioral development. Regression analysis indicated that the set of metals was significantly related to increased scores on four of the five WPBIC subscales and on the total scale, with lead being a major contributor to four of the six dependent measures. Metal combinations were significantly related to increased scores on the WPBIC subscales measuring acting-out, disturbed peer relations, and immaturity, and on the total scale. A continuing reexamination of metal poisoning concentrations is needed because metal levels and metal combinations previously thought harmless may be associated with nonadaptive classroom behavior.  相似文献   
964.

Equivalent English and German versions of the State-Trait Depression Scales (STDS) were developed and presented to samples of American and German students who were comparable with regard to gender and age. Factorial structure and equivalence of the two versions were determined by confirmatory factor analyses (CFA). The CFAs included multiple group analyses which were employed to compare factor patterns, loadings, factor variances and covariances across the two samples. In addition, statistical and psychometric properties of the items and scales were determined and mean differences between nationalities and genders on these scales were tested. In order to obtain information about the external validity, relationships between the STDS and tests which already exist in English and German (several depression scales as well as the State-Trait Personality Inventory, the State-Trait Anger Expression Inventory, and the Mainz Coping Inventory) were analysed.  相似文献   
965.
Efforts to discourage excessive alcohol use among young people can only be effective if the target audience is exposed to, attends to, and comprehends key messages. The aim of this study was to examine age and sex differences in drinking motives to better inform development of targeted interventions to reduce alcohol-related harm. Thirty individual interviews and 12 group interviews were conducted with English 13–25?year olds. Interviewees gave multiple motivations for drinking – especially those related to image and reputation, and played down the health implications of heavy drinking. Negative aspects of drinking – caring for drunk friends, being cared for when drunk and suffering through hangovers with friends – were considered to offer opportunities for closer interpersonal bonding than other social activities. Respondents distanced themselves from ‘problem’ drinkers, but disapproved of others’ problematic drinking or antisocial behaviour. Narrative messages demonstrating the social consequences of excessive consumption were preferred to single, static messages emphasising risk or harm. Interviewees noted that interventions must use an engaging tone or pitch: they considered many campaigns to be patronising or preaching. A lack of consensus between age and sex groups highlighted a need for multifaceted, multi-modal approaches that utilise mobile technologies and new media.  相似文献   
966.
Abstract

The purpose of this study was to test a mediational model of risk and protective factors associated with the psychological adjustment of caregivers of head-injured patients. Forty-three caregivers of patients who had suffered a head injury participated in the study. Findings strongly supported hypotheses. Caregiver burden was associated with poorer psychological adjustment. Social support and a higher percentage of approach coping strategies relative to overall coping strategies were associated with better psychological adjustment. As predicted, caregiver burden showed a direct relationship to psychological adjustment, while social support showed an indirect relationship to adjustment mediated by percentage approach coping.  相似文献   
967.
968.
Methods of coping with frustration were examined in handicapped and nonhandicapped children at three different age levels, by means of the Rosenzweig P-F Study. While an extrapunitive approach was predominant in both groups and did not differ between the groups, significant differences were found in the use of secondary coping strategies. When compared with nonhandicapped counterparts, handicapped six year olds were more likely to minimize or deny frustration. At 10 years, handicapped Ss were more likely than nonhandicapped Ss to be intropunitive or self-blaming. There was a developmental tendency for handicapped Ss to make greater use of intropunitive responses with increasing age.  相似文献   
969.
A Hand Test Popular response is developed using 106 normal subjects and Rorschach's traditional "one-in-three" criterion. Six popular responses were derived. Neither the newly established Hand Test Popular response nor the Korschach Popular discriminated psychosis from nonpsychosis. but as expected, Rorschach X+% and Rorschach WSum6 were significant, and the Hand Test Bizarre (BIZ) score approached significance. Both the Rorschach Popular and the newly developed Hand Test Popular await further elucidation.  相似文献   
970.
A Rorschach record and a narrative poem are examined to determine how imagination expresses the psychological trauma of being exposed as an impostor. The subject had been trained as a medical corpsman and deceived people under the grandiose fantasy of being a doctor. The role of the impostor physician is seen as an imaginative identity that was designed with an adaptive purpose. A Jungian analysis of his suicide attempt and the Rorschach suggest that the impostor role was a masculine compensatory fantasy that served as a counterforce to negative maternal imagery, linked to death, that is present in his imagination.  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