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   50143篇
  免费   2057篇
  国内免费   34篇
  2020年   515篇
  2019年   649篇
  2018年   913篇
  2017年   914篇
  2016年   1027篇
  2015年   713篇
  2014年   842篇
  2013年   3957篇
  2012年   1537篇
  2011年   1565篇
  2010年   924篇
  2009年   976篇
  2008年   1274篇
  2007年   1355篇
  2006年   1166篇
  2005年   1049篇
  2004年   1012篇
  2003年   952篇
  2002年   988篇
  2001年   1666篇
  2000年   1624篇
  1999年   1223篇
  1998年   512篇
  1996年   490篇
  1995年   480篇
  1992年   1003篇
  1991年   947篇
  1990年   937篇
  1989年   877篇
  1988年   882篇
  1987年   802篇
  1986年   818篇
  1985年   861篇
  1984年   698篇
  1983年   628篇
  1982年   493篇
  1979年   784篇
  1978年   557篇
  1977年   492篇
  1976年   490篇
  1975年   611篇
  1974年   749篇
  1973年   784篇
  1972年   654篇
  1971年   597篇
  1970年   577篇
  1969年   561篇
  1968年   714篇
  1967年   625篇
  1966年   591篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
Quality-of-life measures: hospital interview versus home questionnaire   总被引:2,自引:0,他引:2  
Measures adapted from social survey research were used to assess the quality of life of 33 end-stage renal disease (ESRD) patients in a 2-week test-retest design that varied both location and format of administration (hospital interview vs. home self-administered questionnaire). The measures were found to have substantial consistency over time, location, and format. These results indicate that quality of life is a stable construct and support the usefulness of questionnaire quality-of-life measures for evaluating medical interventions.  相似文献   
942.
Medicaid proposals increasingly focus on cost-saving strategies that restrict clients' control over where and when they may receive services. This study used a field experiment in an urban welfare office to examine the possible effects of two aspects of restrictive policies: the loss of choice of providers and adverse patient mix (i.e., when the majority of a provider's clients are Medicaid beneficiaries). Results indicate that health care presented within the context of not having a choice is derogated and that choice and patient mix combine to influence intentions to seek care. Persons who did not choose the health plan in a simulated choice, who had fewer choices than expected, and who did not accept restricted choice also had negative perceptions.  相似文献   
943.
After critically examining the concept of psychopathy and reviewing the major existing theories of psychopathy in the light of a psychobiological conception of abnormal behaviour (Öhman, 1981), this paper attempts to present an integrated, psychobiological model of psychopathy. Essentially this analyses psychopathy in terms of the predisposing influences, the triggering environmental events which initiate psychopathic behaviour, and the neurophsychological mechanisms which mediate it. It is suggested that individuals who show chronic antisocial behaviour, conforming to the North American term ‘sociopath’, may demonstrate a maturational deficit but do not necessarily show a psychopathic personality disorder. The latter is said to be characterised, at a personality trait level, by high Impulsiveness and Psychopathy (Blackburn, 1982 a, b), reflecting interactive deficits in goal direction and affect. At a dynamic (state) level, a psychopathic personality disorder is said to be characterised by a lack of coping, reflecting either, in the case of the secondary psychopath, a deficit in primary appraisal, (over-perception of threat), or in the case of the primary psychopath, a deficit in secondary appraisal (low perceived control over aversive environmental events). It is further suggested that a genetic predisposition to social withdrawal and exposure to an uncontrollably aversive early environment may interact to predispose an individual to develop a psychopathic personality disorder in adulthood.  相似文献   
944.
Twenty-six previous studies were reviewed which demonstrated a consistent link between children's smoking uptake and exposure at home to an actively smoking older family member. The present study included another variable: the family model of smoking cessation. The smoking practices, intentions, and attitudes of 344 children aged 10–14 in Western Australia were anonymously assessed. Those with ex-smokers but no active smokers at home resembled children who had never been exposed to a smoking family model in being less likely to smoke now or intend to in the future, having fewer smoking chums, and believing that cigarettes had more personal and social disadvantages than their peers who shared households with active smokers. This suggested that any pro-smoking modeling while the ex-smoker was active had been counteracted by modeling of quitting. Implications for intervention were discussed.  相似文献   
945.
Social reciprocity behavior was compared for handicapped and nonhandicapped preschool children when they were in play situations with both handicapped and nonhandicapped partners. In a counterbalanced design, handicapped and nonhandicapped children were paired with both handicapped and nonhandicapped play partners, and the social initiation and response sequences of the dyads were observed. Types of initiation observed were friendly statements, friendly questions, mildly negative advances, and demanding statements. Friendly, ignoring, and negative responses were observed to these initiations. Handicapped and nonhandicapped children did not differ on overall number of initiations. However, they did differ on the types of initiation they made. Handicapped children asked fewer friendly questions and engaged in more demanding initiations than expected. Both groups made more initiations when paired with handicapped partners than when paired with nonhandicapped partners, but the groups did not differ on the types of initiation made to handicapped and nonhandicapped partners. The handicapped children made more ignoring and negative responses to friendly initiations than the nonhandicapped children. Behaving similarly, both groups tended to respond negatively to negative and demanding initiations.  相似文献   
946.
947.
948.
Recently a controversy has arisen among behavioral decision theory researchers concerning the generalizability of research based upon student subject samples to the behavior of expert decision makers. This study compared the influence of framing and performance constraints (goals or limits) on the ability of expert and amateur negotiators to reach integrative agreements in a negotiation task novel to both. The results suggested that while experts did outperform amateurs on comparable competitive market simulations, the patterns of their performance as influenced by framing and performance constraints were consistent.  相似文献   
949.
The three subjects of this article, Charles Citrenbaum, Mark King, and William Cohen, are authors, hypnotherapists, and educators par excellence. In this interview they discuss a variety of topics, including Milton H. Erickson (the “Father of Clinical Hypnosis”), hypnosis, hypnotherapy, and effective clinical practice.  相似文献   
950.
Psychopathology and symptom patterns were studied in 60 former prisoners-of-war (POWs) by administering standardized tests including the Minnesota Multiphasic Personality Inventory (MMPI), an adjustment problem checklist, and a structured clinical interview. Most POWs showed marked psychological impairment, but modal profile analysis identified two prototypic MMPI patterns, which differed in pervasiveness and type of psychopathology. Profile subtypes were defined by unique clusters of clinical symptoms and differed in confinement stress severity. The typology of symptoms argues against a homogeneous conceptualization of stress-induced disorders and suggests the need for definition of the severity and subtype of stress phenomena and individual difference factors in responding to trauma.  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