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   56704篇
  免费   2154篇
  国内免费   480篇
  2020年   596篇
  2019年   703篇
  2018年   928篇
  2017年   1026篇
  2016年   1011篇
  2015年   781篇
  2014年   862篇
  2013年   4254篇
  2012年   1585篇
  2011年   1719篇
  2010年   1130篇
  2009年   1147篇
  2008年   1573篇
  2007年   1488篇
  2006年   1370篇
  2005年   1205篇
  2004年   1100篇
  2003年   1118篇
  2002年   1074篇
  2001年   1776篇
  2000年   1733篇
  1999年   1253篇
  1998年   619篇
  1997年   539篇
  1992年   1124篇
  1991年   1085篇
  1990年   1060篇
  1989年   1013篇
  1988年   942篇
  1987年   943篇
  1986年   930篇
  1985年   1033篇
  1984年   857篇
  1983年   715篇
  1982年   548篇
  1981年   595篇
  1979年   858篇
  1978年   635篇
  1977年   585篇
  1976年   547篇
  1975年   766篇
  1974年   829篇
  1973年   905篇
  1972年   747篇
  1971年   682篇
  1970年   650篇
  1969年   689篇
  1968年   823篇
  1967年   761篇
  1966年   782篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
The effects of lactate infusion on subjective mood change were studied in two differently instructed groups, in a double-blind, placebo-controlled, cross-over study. Ss who were told that infusions would produce anxiety reported a significant change in the expected direction after lactate but not after glucose. Ss who were told that infusions would produce a state of pleasant excitement showed no change after either infusion. The possible role of cognitive parameters in experimentally-induced anxiety is discussed.  相似文献   
942.
943.
W M Nelson  S N Cholera 《Adolescence》1986,21(84):855-862
The purpose of this study is to examine the interrelationships among coping statements, a self-report measure of anxiety and maladaptive overt behavior in a real-life stressful situation. Measures of these variables (interviews using TAT-like cards, State-Trait Anxiety Inventory for Children, Behavior Profile Rating Scale) were taken from 23 adolescents prior to and during their dental visit. Results indicated that as disruptive "in-chair" overt behavior increased, so did the percentage of coping statements. In addition, as self-report levels of anxiety increased, the percentage of coping statements significantly decreased. Interestingly, there was no significant relationship between self-report levels of anxiety and disruptive in-chair behavior. It was also noted that the subjects' self-report levels of anxiety significantly decreased following their opportunity to verbalize their coping/noncoping statements via the TAT-like procedure. The implications of these interrelationships to cognitive-behavioral theory are discussed.  相似文献   
944.
This study measured students' attitudes toward a university's student health services (SHS) and identified factors that were related to their attitudes. A questionnaire surveying students' attitudes was administered to a sample of 150 students at the Oxford Campus of the University of Mississippi. Analysis of the data revealed that students' attitudes had a statistically significant correlation with the following variables: perceived medical care cost, amount of health information/education received during medical encounters, time spent in the waiting room of the SHS, sex of the student, and income of the student. There was no significant relationship between attitude and age.  相似文献   
945.
R L Calabrese  H Schumer 《Adolescence》1986,21(83):675-687
This research evaluated the effects of involvement of adolescents in community service activities on levels of alienation. It was proposed that alienation could be reduced through the implementation of a model which utilized community service activities to facilitate adolescent access to adult society, development of responsibility, collaborative and cooperative work, and control over planning and outcomes. It is suggested that adolescent involvement in service activities can produce positive benefits, among which are reduced levels of alienation, improved school behavior, improved grade point average, and acceptance by the adult community. These findings also suggest that females respond more positively to school when allowed to problem-solve collectively and collaboratively.  相似文献   
946.
Factors related to eating disorders in young adolescent girls   总被引:1,自引:0,他引:1  
The objective of this study was to identify factors related to eating disorders in young adolescent girls. Three hundred eighty-five girls who were attending a career conference at a midwestern university completed the Eating Disorder Instrument (EDI) along with a biographical data sheet. The EDI is designed for the assessment of psychological and behavior traits common in eating disorders. While 81% of the young subjects were assessed to be within the range for ideal weight or were underweight, 78% preferred to weigh less. Only 14% were satisfied with their current weight. Findings for each of the subscales used revealed significant differences among the girls based on intact versus broken family; subjects' actual and preferred weight; whether the family ate meals together; average grades; age and grade in school; fathers' occupation; future career plans; place of residence; and feelings toward their mothers.  相似文献   
947.
Physiognomic color responses in perception, imagery, and affect were investigated. Maluma and taketa, nonsense stimuli defined by many investigators as physiognomic, were utilized as prototypical physiognomic stimuli, along with eight other stimuli of various sorts. In Experiment 1, 22 subjects matched the colors of the stimuli; in Experiment 2, 27 subjects reported their imagery to the stimuli; and in Experiment 3, 16 subjects gave their color preferences for the stimuli. The Munsell sets of colors were employed throughout. Significant differences between the physiognomic and other stimuli were found on the brightness and saturation of color matches, images, and preferences. Other differences (e.g., the latency of color images) were also present. Distinctions were also noted between the two physiognomic stimuli. These results support the priority of innate and perceptual processes in physiognomy over those of learning and memory, although some ambiguities still remain.  相似文献   
948.
Freud's experience on the Acropolis is reviewed and reappraised. Also, the experience of Elie Wiesel at the Wall in Jerusalem and Patient X's reaction visiting an Egyptian temple are examined. Carl Jung's wish to go to Rome and his inability to do so are noted. The aim of the paper is to offer deeper understanding about intense reactions many sensitive and creative people experience over travel to special places. These places are treated as idealized and ambivalently loved transference objects. Normal anticipatory pleasure prior to the trip is impaired and reality pleasure at the site cannot be enjoyed. When these spots are reached, ego regression is initiated by the intolerably intense narcissistic pleasure mobilized by the gratification of fantasies that were felt to be unrealizable. The fantasies can be conscious or unconscious and from oedipal as well as preoedipal and postoedipal developmental levels; however, they always involve the fulfillment of overwhelmingly powerful wishes. The deep ego regression, archaic fantasies, and the complex defenses mobilized are frightening since there may also be concern about ego dissolution or irreversible transformation. One highly adaptive solution which helps master these conflictual and developmental experiences is creative ego activity. While maintaining integrity for the individual ego and enhancing the self, creative work and accomplishment also enrich and advance the cultural process.  相似文献   
949.
H Svec 《Adolescence》1986,21(82):449-452
The literature supports the theory that high school dropouts are unable to find employment when they leave school, and that girls who dropout are more likely than boys to return. It was hypothesized that schools may not want to take back students who had once dropped out of school. To investigate the schools' response to dropouts trying to return, three actors were used to portray a male dropout, a female dropout and a parent of a dropout. Fifteen schools were contacted, to determine the differences in response to each actor. The results indicate that schools were more likely to accept the child who is represented by the parent, and that schools reacted more favorably to the parent. The results are discussed and specific recommendations made for program and practice.  相似文献   
950.
H E Mendelberg 《Adolescence》1986,21(81):215-224
Mexican-American adolescents of migrant origin present conflicting attitudes in their selection of ideal characters and images for identification. As minority members, identification with members of outside groups appears blocked for them. At the same time, encounters with outside society seem to undermine identification processes that develop within their own group, their families, and community. This study concludes that relationships of dominance and dependence in the outside society foster inhibitions to the process of identification, and disturbances in the mechanisms of defense in the minority member. These relationships seem to interfere with the internalization and adoption of significant others' characteristics and attitudes.  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