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   1447篇
  免费   46篇
  2023年   6篇
  2022年   6篇
  2021年   11篇
  2020年   18篇
  2019年   38篇
  2018年   29篇
  2017年   36篇
  2016年   43篇
  2015年   32篇
  2014年   41篇
  2013年   136篇
  2012年   62篇
  2011年   64篇
  2010年   34篇
  2009年   31篇
  2008年   66篇
  2007年   70篇
  2006年   65篇
  2005年   54篇
  2004年   67篇
  2003年   76篇
  2002年   65篇
  2001年   19篇
  2000年   22篇
  1999年   26篇
  1998年   21篇
  1997年   25篇
  1996年   22篇
  1995年   26篇
  1994年   18篇
  1993年   25篇
  1992年   24篇
  1991年   21篇
  1990年   14篇
  1989年   7篇
  1988年   14篇
  1987年   16篇
  1986年   10篇
  1985年   14篇
  1984年   16篇
  1983年   15篇
  1982年   12篇
  1981年   12篇
  1980年   9篇
  1979年   11篇
  1978年   11篇
  1977年   8篇
  1976年   11篇
  1975年   6篇
  1974年   3篇
排序方式: 共有1493条查询结果,搜索用时 15 毫秒
991.
992.
This study examined the effects on healthy adults of a new emotional self-management program, consisting of two key techniques, “Cut-Thru” and the “Heart Lock-In.” These techniques are designed to eliminate negative thought loops and promote sustained positive emotional states. The hypotheses were that training and practice in these techniques would yield lowered levels of stress and negative emotion and cortisol, while resulting in increased positive emotion and DHEA levels over a one-month period. In addition, we hypothesized that increased coherence in heart rate variability patterns would be observed during the practice of the techniques. Forty-five healthy adults participated in the study, fifteen of whom acted as a comparison group for the psychological measures. Salivary DHEA/DHEAS and cortisol levels were measured, autonomic nervous system function was assessed by heart rate variability analysis, and emotions were measured using a psychological questionnaire. Individuals in the experimental group were assessed before and four weeks after receiving training in the self-management techniques. The experimental group experienced significant increases in the positive affect scales of Caring and Vigor and significant decreases in the negative affect scales of Guilt, Hostility, Burnout, Anxiety and Stress Effects, while no significant changes were seen in the comparison group. There was a mean 23 percent reduction in cortisol and a 100 percent increase in DHEA/DHEAS in the experimental group. DHEA was significantly and positively related to the affective state Warmheartedness, whereas cortisol was significantly and positively related to Stress Effects. Increased coherence in heart rate variability patterns was measured in 80 percent of the experimental group during the use of the techniques. The results suggest that techniques designed to eliminate negative thought loops can have important positive effects on stress, emotions and key physiological systems. The implications are that relatively inexpensive interventions may dramatically and positively impact individuals’ health and well-being. Thus, individuals may have greater control over their minds, bodies and health than previously suspected.  相似文献   
993.
Quantifiers and 'If'-Clauses   总被引:2,自引:0,他引:2  
Stephen Barker ( The Philosophical Quarterly , 47 (1997), pp. 195–211) has presented a new argument for a pure material implication analysis of indicative conditionals. His argument relies crucially on the assumption that general indicatives such as 'Every girl, if she gets a chance, bungee-jumps' are correctly analysed as having the formal structure (for all x)(if x gets a chance, x bungee-jumps). This paper argues that an approach first proposed by David Lewis must be pursued: the 'if'-clause in these sentences restricts the quantifier. Only the Lewis-style analysis can deal with sentences involving non-universal quantifiers such as 'Most letters are answered if they are shorter than 5 pages'. I show that Barker's reasons for rejecting the restrictor analysis are not cogent and that the restrictor analysis connects widely with recent work in natural language semantics.  相似文献   
994.
This study examined the development of post-traumatic stress disorder (PTSD) and associated features in residents of Dunsmuir, California, following a toxic spill. Classification of PTSD was based on a cutoff score from the Impact of Event Scale. It was predicted that greater exposure to the spill would increase the risk of PTSD and associated symptoms among spill residents; that those classified with PTSD would report more symptoms than would those without PTSD and controls; and that litigants would be classified with PTSD more than would nonlitigants. Results suggest that spill residents classified with PTSD had greater levels of tension, depression, anxiety, anger, fatigue, and confusion than did spill residents without PTSD and control residents with and without PTSD. Spill residents with PTSD reported more memory problems and sleep disorders than did those without PTSD and control residents with and without PTSD. Measures of physiological arousal showed that spill residents had higher systolic blood pressure several hours after a stressful interview than did control residents without PTSD. Pulse rates several hours after a stressful interview were higher for spill residents with and without PTSD than for control residents with PTSD. Results suggest that exposed residents are at risk for developing PTSD and associated symptoms.  相似文献   
995.
The relation of patterns of family problems and patterns of delinquent behavior over time was evaluated among a sample of inner-city minority adolescent males. Empirically derived groups were identified and included: nonoffenders, chronic minor offenders, escalators, and serious chronic offenders. Patterns of family problems were also identified and differentially related to delinquency groups. Members of the group involved in serious chronic offending were more likely to have families characterized by multiple problems including disruption, conflict, and lack of parental involvement, sometimes so extreme as to meet the legal requirement of neglect. They were also more likely to have families characterized by deviant behavior and attitudes. The finding of specific relations between types of family problems and patterns of delinquent behavior has important implications for intervention and prevention. Rather than assuming a general relation between family functioning and delinquent involvement, specific aspects of family functioning may need to be targeted to affect different patterns of delinquent involvement.  相似文献   
996.
This review was conducted to explore the feasibility of Rational-Emotive therapy as an approach to addressing the problems of providing mental health services to persons who have a severe hearing impairment. Informational resources dealing with the topics of Rational-Emotive Therapy and counseling with persons who are hearing impaired were reviewed. References indicated that RET is reasonably well suited to the task of counseling with clients who are hearing impaired, provided that appropriate modifications are incorporated. Specific modifications of RET are recommended and discussed.  相似文献   
997.
ABSTRACT This study examined the effect of positive and negative behavioral feedback on subsequent behavior The results indicate that positive and negative feedback concerning how well individuals have acted on their attitudinal in the past have different effects on subsequent behavior These effects are moderated by individual differences in self-monitoring and in the frequency with which an individual has acted on his or her attitude in the past–variables which can be seen as reflecting differences in the extent to which individuals see themselves as persons who act on their attitudes, either in general or in regard to a specific attitudes domain Implications of the findings for understanding the literature on labeling and on feedback about energy use are discussed, as are the practical implications for using behavioral feedback in an effort to increase attitude-related action  相似文献   
998.
A reply is presented to Ward and Scott’s (1987) recent reservations about the evidence for Kemler Nelson’s (1984) claims about when category learning is likely to be holistic. Focusing on the effect of intention, this paper suggests that: (1) contrary to Ward and Scott’s contention, a reanalysis of a critical set of original data continues to support Kemler Nelson’s claim of more holistic learning under unintentional conditions; (2) there is converging evidence for that claim; (3) Ward and Scott’s incidental learning data may diverge because of the inclusion of many weak learners; (4) Ward and Scott’s counterproposal makes some implausible and unsupported predictions; and (5) some of Ward and Scott’s reaction-time data are difficult to interpret. Still, a final discussion identifies some significant points of agreement with Ward and Scott.  相似文献   
999.
The purpose was to evaluate the effect of college experiences on androgyny. One hundred and thirty-nine freshman and 57 senior women completed the Bem Sex Role Inventory (BSRI) as well as measures to assess precollege variables, including a biographical questionnaire, a life experience survey, a measure of parental identification, and parental sex role inventories. In addition, seniors completed measures that assessed college experiences. Almost all of the scales on the two precollege questionnaires that measured parental variables were found related to student's sex role. Consequently, all remaining relationships with sex role were examined with and without controlling for these parental scales. None of the variables that measured college experiences were found to be significantly related to sex role. The results did not support the hypothesis that seniors would assume a more masculine sex role than freshmen. However, the seniors did obtain significantly lower scores than freshmen on the BSRI Femininity scale.  相似文献   
1000.
Two experiments were conducted to investigate how individuals assess covariation with rank order data. In both studies, subjects were given sets of rank order data, each set consisting of ten items ranked on two characteristics, and were asked to estimate the degree of relationship for each set. Contrary to previous research, subjects' estimates of covariation in this task were quite sensitive to actual levels of correlation in the data and remained unaffected by simple variations in the way rank order data were presented. More importantly, it appeared that this sensitivity to covariation was due likely to the use of a simple heuristic referred to here as the total discrepancy heuristic. These findings are discussed in terms of the availability of simple heuristics in rank-ordered versus other types of data and the consequences of using such heuristics in decision-making contexts.  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