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   3759篇
  免费   194篇
  国内免费   3篇
  3956篇
  2023年   36篇
  2022年   38篇
  2021年   66篇
  2020年   86篇
  2019年   101篇
  2018年   142篇
  2017年   138篇
  2016年   155篇
  2015年   107篇
  2014年   119篇
  2013年   478篇
  2012年   238篇
  2011年   204篇
  2010年   146篇
  2009年   136篇
  2008年   175篇
  2007年   173篇
  2006年   164篇
  2005年   137篇
  2004年   126篇
  2003年   123篇
  2002年   124篇
  2001年   64篇
  2000年   56篇
  1999年   53篇
  1998年   38篇
  1997年   24篇
  1996年   45篇
  1995年   34篇
  1994年   30篇
  1993年   18篇
  1992年   41篇
  1991年   25篇
  1990年   20篇
  1989年   16篇
  1988年   26篇
  1987年   21篇
  1986年   19篇
  1985年   15篇
  1984年   26篇
  1983年   8篇
  1982年   9篇
  1981年   11篇
  1980年   14篇
  1979年   9篇
  1978年   11篇
  1973年   8篇
  1972年   13篇
  1969年   10篇
  1968年   9篇
排序方式: 共有3956条查询结果,搜索用时 15 毫秒
801.
SEX ROLES AND PERCEPTIONS OF FEMININITY AND MASCULINITY OF HISPANIC WOMEN   总被引:1,自引:0,他引:1  
This article evaluates the research conducted on sex roles and perceptions of femininity and masculinity of Hispanic women. It begins with a critical review of early social and anthropological studies in which the roles of Hispanic women before the advent of the women's movement in the 1960s are described. The paper continues with more recent psychosocial studies that question the traditional portrayal of male–female roles and allocation of power in Hispanic families. Finally, the studies on Hispanics that measure the psychological dimension of femininity and masculinity are reviewed and summarized in a table including authors, sample, methodology and results.  相似文献   
802.
Computerphobia     
Five studies of over 450 university students presented a comprehensive picture of computer-phobia. Three research and clinically based self-report instruments were developed to measure three nearly independent dimensions of computerphobia-computer anxiety, computer attitudes, and computer cognitions and feelings. Results indicated that older students were more computer anxious, but did not have more negative attitudes, cognitions, or feelings, than did younger students. Women had more negative attitudes than did men. Feminine-identity students showed more anxiety and negative attitudes than did masculine-identity students, regardless of gender. White students had more anxiety and more positive attitudes than did nonwhite students. Computerphobia was related to other anxiety measures (mathematics, state, and trait), but was a separate construct. Experience with computer interaction did not reduce anxiety or improve attitudes. Finally, regardless of academic major, computer-anxious students showed less computer aptitude, literacy, and interest. Implications for treating computerphobia are discussed.  相似文献   
803.
The program development and first-year results of a 3-year U.S. Department of Education Fund for the Improvement of Postsecondary Education (FIPSE) grant are described. The identification of computerphobics and the types of discomfort they experience are defined. A clinically based 5-week model computerphobia reduction and skills-acquisition program is presented. Screening and assessment measures are outlined and three treatment modules—two individual treatments (systematic desensitization and thought stopping) and an information/support group—are described. The first-year results demonstrate significant pretreatment-to-posttreatment change in anxiety, attitudes, cognitions, and feelings. Plans are discussed for further evaluation and program expansion.  相似文献   
804.
Four boys and 4 girls (3 to 5 years old) played with as many as three toys chosen from a set of six, and were then asked whether they played with each of the toys. After a baseline in which all children showed high levels of correspondence between reported and actual behavior, reports of play were differentially reinforced, first in an individual and then in a social context. Two children in the individual condition began to report play with all six toys, even though no more than three toys had been played with. When reports of play were reinforced in a group context, 5 children reported play with all six toys. When correspondence was subsequently reinforced, virtually complete correspondence returned and was maintained in a third noncontingent reinforcement condition. Correspondence and lack of correspondence were discussed in terms of self-tacting and distorted tacting or manding.  相似文献   
805.
With the aim of assessing four forms of therapy with adjustment-disordered outpatients, we randomly assigned 70 subjects to the following treatments: supportive psychotherapy (psychoanalytically oriented), viloxazine (an antidepressant), lormetazepam (a benzodiazepine), and S-adenosylmethionine (a methyl donor with antidepressive properties). A further group of 15 subjects received a placebo, orally administered. The trial lasted 4 wk. None of the treatments had clearly superior effects over others on scores on the Zung Self-rating Depression Scale. All produced a significant improvement. However, groups given S-adenosylmethionine and supportive psychotherapy had the highest mean scores.  相似文献   
806.
In this experiment, which is basically a replication of an earlier experiment done in 1988, we tested the hypothesis that the brain self-regulates its own arousal and activation. When subjects perform a putative right-hemisphere task (visuospatial), the effect of a supplementary information-processing load is supposed to lead to a delayed reaction. The opposite is supposed to be true in a putative left-hemisphere task (semantic). The former effect is supposed to be the result of increased arousal, the latter is that of increased activation. In the present experiment the reactions subject to experimental treatment are compared with control reactions of the same subject. This was not the case in the earlier experiment. Still other improvements of the experimental design were made. The results clearly confirm the earlier findings. Additional evidence is offered to strengthen the plausibility of the basic hypothesis.  相似文献   
807.
An archival study was done of 500 medical records from a community clinic serving a low income predominantly Hispanic area of Los Angeles. The data collected included demographic characteristics and presented symptoms or reasons for visit, as well as diagnosis and treatment. The greatest number of patient visits were made for family planning services. A large porportion of the patients who received initial family planning services failed to return to the clinic for follow ups or additional supplies. A total of 208 pregnancy tests were performed in 151 of the 500 cases sampled. Of these, 152 were positive. The most frequently stated reason for requesting pediatric services was for physical exams, accounting for 30% of the visits. It should be noted that the discontinuity of care and insufficient utilization of preventive care seen in these results deserve serious attention by medical clinic administrators. The rate of patients who do not return for family planning after the initial visit is worrisome. A greater effort to attract women to family planning services at the time they request pregnancy verification could reduce the need for abortion of unwanted pregnancy. The data also indicate that changes in the wording of certain questions commonly asked of clients may be needed. This study allowed service providers to obtain important information about their performance, their needs, and the future direction that their services might take. This type of analysis is relatively low in cost and can yield important benefits, espicially if done on a periodical base in a search for policy implications.  相似文献   
808.
Models of speech processing typically assume that speech is represented by a succession of codes. In this paper we argue for the psychological validity of a prelexical (phonetic) code and for a postlexical (phonological) code. Whereas phonetic codes are computed directly from an analysis of input acoustic information, phonological codes are derived from information made available subsequent to the perception of higher order (word) units. The results of four experiments described here indicate that listeners can gain access to, or identify, entities at both of these levels. In these studies listeners were presented with sentences and were asked to respond when a particular word-initial target phoneme was detected (phoneme monitoring). In the first three experiments speed of lexical access was manipulated by varying the lexical status (word/nonword) or frequency (high/low) of a word in the critical sentences. Reaction times (RTs) to target phonemes were unaffected by these variables when the target phoneme was on the manipulated word. On the other hand, RTs were substantially affected when the target-bearing word was immediately after the manipulated word. These studies demonstrate that listeners can respond to the prelexical phonetic code. Experiment IV manipulated the transitional probability (high/low) of the target-bearing word and the comprehension test administered to subjects. The results suggest that listeners are more likely to respond to the postlexical phonological code when contextual constraints are present. The comprehension tests did not appear to affect the code to which listeners responded. A “Dual Code” hypothesis is presented to account for the reported findings. According to this hypothesis, listeners can respond to either the phonetic or the phonological code, and various factors (e.g., contextual constraints, memory load, clarity of the input speech signal) influence in predictable ways the code that will be responded to. The Dual Code hypothesis is also used to account for and integrate data gathered with other experimental tasks and to make predictions about the outcome of further studies.  相似文献   
809.
An individual differences additive model is discussed which represents individual differences in additivity by differential weighting of additive factors. A procedure for estimating the model parameters for various data measurement characteristics is developed. The procedure is evaluated using both Monte Carlo and real data. The method is found to be very useful in describing certain types of developmental change in cognitive structure, as well as being numerically robust and efficient.The work reported here was partly supported by Grant A6394 to the first author by the Natural Sciences and Engineering Research Council of Canada.  相似文献   
810.
A study of 1200 women aged 15-45 in Mexico City was conducted with the object of discovering the factors that have the greatest predictive value for attitudes, beliefs, intentions, and behavior in reference to family planning. Information was solicited by questionnaire with respect to 6 groups of variables: 1) independent variables (age, education, occupation and education of spouse, and whether the woman worked before marriage); 2) perceived value of children and family planning; 3) peer group norms; 4) marital relationship; 5) modernization; and 6) motivation. Factor analysis was applied to each of the groups ofvariables to determine which factors had the greatest impact within the group; then multiple regression analysis was applied to determine which factors had the greatest predictive value. A predictive model of family planning according to the results is illustrated and the various aspects discussed. It was found that the intention to use contraceptives and a good marital relationship (one with open communication and shared decision making) were the best predictors of effective family planning behavior.  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