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   32817篇
  免费   1370篇
  国内免费   19篇
  2020年   447篇
  2019年   479篇
  2018年   722篇
  2017年   647篇
  2016年   726篇
  2015年   474篇
  2014年   664篇
  2013年   2777篇
  2012年   1135篇
  2011年   1189篇
  2010年   743篇
  2009年   824篇
  2008年   1129篇
  2007年   1113篇
  2006年   999篇
  2005年   882篇
  2004年   885篇
  2003年   837篇
  2002年   799篇
  2001年   961篇
  2000年   973篇
  1999年   748篇
  1998年   407篇
  1997年   364篇
  1996年   291篇
  1995年   327篇
  1994年   302篇
  1993年   314篇
  1992年   597篇
  1991年   529篇
  1990年   586篇
  1989年   508篇
  1988年   489篇
  1987年   467篇
  1986年   465篇
  1985年   533篇
  1984年   449篇
  1983年   375篇
  1982年   322篇
  1981年   305篇
  1980年   285篇
  1979年   420篇
  1978年   361篇
  1977年   290篇
  1976年   287篇
  1975年   360篇
  1974年   414篇
  1973年   403篇
  1972年   305篇
  1968年   305篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
901.
In recent years, increasing evidence of sexual abuse of children has created a new field of medicolegal inquiry requiring a new expertise. In psychoanalysis, one of our specific tasks is to address the issues of diagnosis and of the pathogenic effect of sexual abuse as it is ultimately reflected in the intrapsychic dynamics of the developing ego. My hypothesis is that it may be possible to determine early in the treatment whether sexual abuse has taken place. The case of a two-and-three-quarters-year-old girl, suspected of having been molested by her father, is presented in depth. The evolution of material confirming the diagnosis is presented by way of documenting evidence of sexual abuse. Issues elaborating the difficulty in making the diagnosis are also explored. Finally, a synthesis of diagnostic considerations useful for arriving at a diagnosis of sexual abuse is presented in the hope that these factors will serve as diagnostic guidelines.  相似文献   
902.
This section draws attention to occupational stress and suggests ways in which psychologists can apply their knowledge of research methods and treatment to this issue. In this article, the past and present role of psychologists in occupational stress is examined and ways in which psychologists might play a more central role are proposed. Although industrial/organizational and health psychology are most obviously applicable to the study of workplace wellness, more focused attention and wider application of knowledge from other subspecialities are also examined. The need for increased attention to work and family; race, class, and gender; and training and public policy issues are also discussed.  相似文献   
903.
The fiery crash of a DC-10 at Sioux City, Iowa, on July 19, 1989, caused a crisis of major proportions, with attendant mental health needs. Various articles have described the need for psychological response teams in such crises. The present article provides practical guidelines for the preparation of a mental health disaster plan and for the coordination of a mental health team responding to a major air disaster. Such disasters can occur in any part of the country at any time. It is hoped that the suggestions in the present article will help teams that respond to future air disasters provide more rapid, effective, and efficient delivery of services to the survivors and their families, and the families of those who are killed.  相似文献   
904.
Research on the environmental psychology of later life has produced data and theoretical advances that have been incorporated into the design of nursing homes and housing, neighborhood planning, housing policy, and housing-related services for older people. The applications of knowledge have been particularly useful in compensating for behaviors impaired by the physical illnesses that become more prevalent with aging. Some research has also documented environmental transactions made with the intent of choosing, creating, or shaping environments that increase need fulfillment. These two directions of the transactions between the older person and the environment have been characterized as environmental docility and environmental proactivity. The need for more research on promoting opportunities for proactivity in an attempt to raise environmental quality is discussed.  相似文献   
905.
The old homeless and the new homelessness in historical perspective   总被引:2,自引:0,他引:2  
In the 1950s and 1960s homelessness declined to the point that researchers were predicting its virtual disappearance in the 1970s. Instead, in the 1980s, homelessness increased rapidly and drastically changed in composition. The "old homeless" of the 1950s were mainly old men living in cheap hotels on skid rows. The new homeless were much younger, more likely to be minority group members, suffering from greater poverty, and with access to poorer sleeping quarters. In addition, homeless women and families appeared in significant numbers. However, there were also points of similarity, especially high levels of mental illness and substance abuse.  相似文献   
906.
907.
Wordshape errors in language production   总被引:1,自引:0,他引:1  
J P Stemberger 《Cognition》1990,35(2):123-157
Errors in natural speech that crucially involve the shape of the target word, i.e. interact in some way with the number of consonants and vowels in the word and their relative positioning, are examined in detail. It is shown that context highly constrains the rate of such errors. The data implicate a distinction between a segment level that encodes fine phonemic distinctions and a wordshape level with a course encoding. Implications for the representation of language and cognitive processing in language production are explored.  相似文献   
908.
Meta-logical problems: knights, knaves, and Rips   总被引:1,自引:0,他引:1  
P N Johnson-Laird  R M Byrne 《Cognition》1990,36(1):69-84; discussion 85-90
  相似文献   
909.
Escape and avoidance that are disproportional to the danger of the pertinent stimulus are important clinical problems that are often related to inaccurate (catastrophic) expectations. One possible source of such expectations is a prior, underestimated aversive experience. In the present experiment the hypotheses that underestimated pain leads to escape and that it leads to avoidance were tested. In order to control for the effect of the intensity of the pain stimulus, a control group that received 20 pain stimuli of high intensity was formed. Subjects in the experimental condition received 17 pain stimuli of low intensity and 3 of (unexpectedly) high intensity (experimentally induced underprediction). Underprediction of the high intensity stimulus was significantly related to escape, but not to avoidance. The results suggest that the way in which avoidance was operationalized accounts for this. The strong support of the hypothesized relationship between underpredicted pain and escape is an important finding, however.  相似文献   
910.
A rationale for, and data from, a trial of a theory of item generation by algorithms whose origins are cognitive models of task performance are presented. Since Spearman (1904), intelligence has been operationally defined and assessed in human subjects by administering identical test items whose content and order have been fixed only after empirical iterations. In our approach, intelligence is ostensively defined by theoretically determined algorithms used for item construction and presentation. Knowledge of what cognitive factors limit human performance makes it possible to vary within tightly specified parameters those features of the tasks that contribute to difficulty, which we call radicals, to let those components of the tasks that do not contribute to difficulty vary randomly, and to counterbalance aspects of answer production that might induce biases of response. Empirical data are based on the generation of five different short tests demanding only functional literacy as a prerequisite for their execution. Four parallel forms of each test were administered to young male Army recruits whose scores were collated with their Army Entrance Test results, which were not previously known to us. Results show that the parallel, algorithm-generated item sets are statistically invariant, which item generation theory demands; and that the individual tests differentially predict Army Entrance Test scores. We conclude that IQ test performances are parsimoniously explained by individual differences in encoding, comparison and reconstructive memory processes.  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