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   40722篇
  免费   1644篇
  国内免费   18篇
  42384篇
  2020年   388篇
  2019年   449篇
  2018年   614篇
  2017年   635篇
  2016年   694篇
  2015年   519篇
  2014年   600篇
  2013年   2853篇
  2012年   1166篇
  2011年   1142篇
  2010年   723篇
  2009年   686篇
  2008年   1015篇
  2007年   1025篇
  2006年   879篇
  2005年   849篇
  2004年   796篇
  2003年   727篇
  2002年   768篇
  2001年   1300篇
  2000年   1255篇
  1999年   919篇
  1998年   426篇
  1997年   366篇
  1992年   884篇
  1991年   820篇
  1990年   835篇
  1989年   730篇
  1988年   721篇
  1987年   693篇
  1986年   733篇
  1985年   803篇
  1984年   613篇
  1983年   567篇
  1982年   395篇
  1981年   379篇
  1979年   703篇
  1978年   453篇
  1977年   438篇
  1976年   430篇
  1975年   596篇
  1974年   687篇
  1973年   734篇
  1972年   625篇
  1971年   586篇
  1970年   580篇
  1969年   565篇
  1968年   759篇
  1967年   673篇
  1966年   597篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
The present study investigates the prevalence of adolescent eating disorders across gender, cultural groupings, and socioeconomic status. The Eating Attitudes Test, the Binge-Eating Questionnaire, and a demographic questionnaire were administered to students at two high schools. The results indicate a high rate of eating disorders in a nonclinical adolescent population. The rates for binge eating are comparable to those found in studies of college students--found at a younger age. With regard to SES, cross-cultural and gender findings, it is clear that eating disorders cross socioeconomic class and ethnic groups, and have a higher rate of occurrence in males than previously reported. Given such high rates of eating problems in a nonclinical population, the issue of prevention and early detection must be addressed. Additionally, more specific information on male eating disorders is needed.  相似文献   
92.
As part of a large survey of addictive behavior in high school students, 43% of a sample of 278 (26% of the males, 57% of the females) scored above the cutoff point set by Overeaters Anonymous on their scale for assessing compulsive overeating. While this at-risk group did not report poorer general adjustment, health, or school achievement than did the students not at risk, they did significantly more often perceive their life quality and relationship with the person closest to them as less positive. The at-risk subsample indicated the defensive effectiveness of overeating in their significantly more frequent report of dissociative experiences while eating, and less severe ratings of insecurity, worrying, and daydreaming. One of the most salient findings was the at-risk students' more frequent report of addictive problems in their parents (overeating, alcohol and drug use, and gambling).  相似文献   
93.
The present standing of psychoanalysis as a science and the vitality of psychoanalytic research effort are reviewed. The two are interdependent, since the possibilities for empirical research rest on the necessary assumption that psychoanalysis is indeed enough a science to be susceptible to knowledge advance by the (research) methods of science. Concerning our status as a science, I review attacks on our scientific credentials (both from within our ranks and without) by the logical positivists, by the hermeneuticists (a rubric comprising a variety of hermeneutic, phenomenological, exclusively subjectivistic, and/or linguistically based conceptualizations of our field), and the most recent by the philosopher of science, Adolf Grünbaum. I try to demonstrate what I feel to be the failure of each of these assaults, and why I feel there is no reason to see psychoanalysis as anything other than a scientific psychology and, therefore, in theory amenable to empirical research approaches. I then review the history and the current status of these systematic research efforts in psychoanalysis, and the reasons why these have been far less in scope and in accomplishment than has been possible or than has been needed. Here I have focused especially on research involving technique and our theory of change and cure--i.e., research on the analytic process; on what changes take place (outcome) and how those changes come about or are brought about (process).  相似文献   
94.
Working through is centrally important to clinical psychoanalysis. It is inadequately explained in analytic theory. An artificial intelligence model of the process is proposed. Models of problem solving show that the complexity of necessary computation is an important determinant of how a problem is solved. Not optimal, but only good enough solutions are usually found. The quality of solutions depends on the time and resources available. Generally it is far easier to use existing methods than to develop new approaches. When problems must be solved in an emergency fashion, as in trauma, poor solutions are likely to emerge. In studying the annealing of metals and other complex optimization problems, a process, the Boltzman algorithm, was discovered, which continues the search for better solutions while gradually developing a coherent structure of the overall solution. The algorithm provides a model both for psychoanalytic working through and for the normally ongoing process of psychological development and reworking whose deficiency is characteristic of much psychopathology. Working through in the analytic situation is the reactivation of this normal process, and a good analytic outcome is achieved when the process can continue without the analyst. Properties of the Boltzman algorithm clarify such concepts as "optimal" frustration and anxiety which correspond to working in the area where the stable but not rigid structures emerge in the algorithms operation. These studies are an example of how computer science and artificial intelligence are a potentially rich source for psychoanalytic theory.  相似文献   
95.
96.
97.
This study examined the agreement or congruence rate between clinical-discharge diagnoses rendered by a psychiatrist, and admission and discharge MMPI-derived diagnoses from four diagnostic classification systems that have been developed for the MMPI. The four classification systems included a simple high-point code based on the most elevated clinical scale in the profile, the Henrichs revision of the Meehl-Dahlstrom rules, the Goldberg equations, and a system developed by Lachar. Subjects consisted of 150 patients selected from a larger pool of patients who had completed a 9-week adult residential treatment program. Overall, this study yielded modest hit rates between 26% and 34% for MMPI-derived diagnoses and psychiatric diagnoses across the various classification systems. In addition, stability of MMPI-based diagnoses from admission to discharge assessments ranged from 48% to 51% depending on the classification system employed. Findings are discussed in terms of their implications for the use of the MMPI in patient diagnosis. It is recommended that the MMPI be used in conjunction with other sources of clinical and test information in deriving clinical diagnoses.  相似文献   
98.
99.
Subjects (N= 28) performing a complex disjunctive concept-formation task on a microcomputer were given the opportunity to seek help following failure to correctly identify concepts. The proportion of those seeking help was significantly greater when the source of help was the computer itself (86%) rather than another person (36%). Consistent with past research, those who did not ask for help gave reasons other than the potential negative social consequences of doing so. Self-report data and a systematic test for the presence of experimenter-induced demand ruled out several possible sources of confounding. The results have implications for designers of time-sharing and networked computer systems.  相似文献   
100.
The relative importance of genetic and environmental factors for neuroticism, extraversion, impulsivity, and monotony avoidance were estimated in a sample of 99 monozygotic and 229 dizygotic pairs of twins reared apart (TRA) and a matched sample of 160 monozygotic and 212 dizygotic pairs of twins reared together (TRT). The average age was 58.6 (SD = 13.6); 72% of the twins were 50 or older. Model-fitting analyses verified the importance of genetic factors for all four measures; from 23% to 45% of the total variation was attributable to genetic sources. There was considerable evidence that these factors were operating in a nonadditive manner for extraversion and impulsivity. Shared environment accounted for less than 10% of the variance; some evidence for selective placement was found for neuroticism.  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