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   5850篇
  免费   311篇
  国内免费   2篇
  2023年   58篇
  2022年   47篇
  2021年   71篇
  2020年   123篇
  2019年   174篇
  2018年   210篇
  2017年   230篇
  2016年   207篇
  2015年   183篇
  2014年   190篇
  2013年   620篇
  2012年   312篇
  2011年   343篇
  2010年   215篇
  2009年   218篇
  2008年   276篇
  2007年   270篇
  2006年   227篇
  2005年   195篇
  2004年   181篇
  2003年   184篇
  2002年   159篇
  2001年   90篇
  2000年   69篇
  1999年   67篇
  1998年   76篇
  1997年   65篇
  1996年   69篇
  1995年   48篇
  1994年   63篇
  1993年   43篇
  1992年   45篇
  1991年   41篇
  1990年   49篇
  1989年   25篇
  1988年   31篇
  1987年   32篇
  1986年   27篇
  1985年   48篇
  1984年   42篇
  1982年   46篇
  1981年   29篇
  1980年   41篇
  1979年   41篇
  1978年   40篇
  1977年   48篇
  1976年   38篇
  1975年   35篇
  1974年   24篇
  1973年   30篇
排序方式: 共有6163条查询结果,搜索用时 15 毫秒
161.
The advantage of interactive over separation imagery in associative recall was markedly diminished when a unique imaginary context was provided for each imaged pair of words. Separation imagery was much more sensitive to contextual redundancy than was interactive imagery. Context was viewed as facilitating organization at encoding as well as affecting cue loading at retrieval. A three-element associative model is described.  相似文献   
162.
This study investigated recognition memory of photographs of the subject's own face. Male and female subjects were photographed as they projected sociable faces, trustworthy faces, and intelligent faces. After deciding which face of 10 best represented each characteristic, and judging which photograph best represented their “real self,” a recognition memory test of poses was given. Half of each sex were tested under intentional learning conditions and the remainder were tested under incidental learning conditions. Females demonstrated superior recognition memory of their own facial projections and, in particular, recalled photographs of their “real self” and “most sociable” self most easily. No differences were found between the two learning conditions. Subjects' recognition performance was not related to their confidence of judgments. The results were discussed in terms of sex differences and the role of self in memory.  相似文献   
163.
Subjects were 384 Moroccan males (age range 6–22 yrs.), divided into 16 equal groups, according to the factorial design: age (4) × schooling (2) × environment (2). Subjects were tested on four Ponzo configurations (differing in contextual information) from Leibowitz et al. (1969), the Ponzo perspective stimulus from Segall et al. (1966), the CEFT from Witkin et al. (1971), and a measure of pictorial depth perception. Individual measures of contact with mass-media and urban life were collected on each subject. Analyses indicated that all main factors of age, schooling, and environment played important, and differing, roles in inducing illusion susceptibility. Piaget's (1969) theory of primary and secondary illusions was found useful in understanding the results of the Ponzo configurations used in the study. Primary illusion configurations were found to be relatively insensitive to experiential variables, and illusion susceptibility decreased with chronological age. In contrast, secondary illusion configurations were affected by many experiential factors, and illusion susceptibility was mediated through perceptual development and pictorial depth perception rather than chronological age. It was concluded that single-factor theories of ontogenetic change in illusion susceptibility were inadequate to explain the complex interactions found in this study.  相似文献   
164.
Novak, Jones, and Jones (1975) state that menstrual distress (dysmenorrhea) is the greatest cause of lost work hours among women, and Kistner (1970) estimate this to be 140 million annual work hours. Thirty-five percent of female adolescents. 25% of college women, and 60–70% of single females in their 30's and 40's are said to be invalid during menstruation (Green, 1971). Treatment procedures for primary dysmenorrhea have included hypnosis (Lackie, 1964), physical exercises (Golub. 1959). natural childbirth techniques (House, 1969), and oral contraceptives.

Though hormones are the most recent, frequent and effective treatment approach (Novak et al. 1975). Tyler (1973) cautions against their use because of possible adverse side effects. Recently, systematic desensitization (SD) has been used to relieve menstrual distress (Mullen, 1968, 1971; Reich, 1972; Tasto and Chesney, 1974) without risk of such side effects. Although SD has been effective, considerable response variability has been noted.

Becuase of this variability. Chesney and Tasto (1975a) developed the Menstrual Symptom Questionnaire (MSQ) to psychometrically identify two types of primary dysmenorrhea: spasdomic dysmenorrhea which designates distress during the flow period associated with excessive muscle tension, and congestive dysmenorrhea referring to premenstrual tension related to water retention. This instrument was designed to define types of menstrual symptoms and not symptom severity. Test-retest reliability was 0.87 and discrimination between spasdomic and congestive dysmenorrhea was highly significant. Of 48 women tested. 29 were identified as spasdomic with MSQ scores between 82 and 102, while 19 scored in the congestive range (46–68). Interestingly, no women scored in the median range (69–81), suggesting that there exists two unique types of primary dysmenorrhea identifiable by the MSQ. Subsequently, Chesney and Tasto (1975b) reported that congestive women did not respond to SD, while spasdomic symptoms were significantly reduced. It was hypothesized that the relaxation training component of SD was effective with spasmodic muscle tension symptoms and ineffective with congestive water retention symptoms. Consequently, the MSQ was thought capable of accounting for previously reported response variability of primary dysmenorrhea to SD.

The present study was intended to replicate Chesney and Tasto's (1975a, 1975b) findings. The following Null hypotheses were tested; (a) the MSQ does not have significant test-retest reliability; (b) the congestive-spasmodic symptom dimension of the MSQ is not dichotomous; and (c) the MSQ does not predict SD effectiveness  相似文献   

165.
166.
167.
168.
It is a common task to give children a picture containing implicit depth cues and to require them to extract depth information from it. The cues are always selected from the adult repertoire; little is known about children's production of their own cues. In this experiment, 5- to 10-year-old children were required to draw one object behind another in a situation in which adults invariably produce the further object partially occluded by the nearer. The results were an age-related decline in the tendency to segregate the objects and an increase in the tendency to group the objects using partial occlusion, with a cross-over at 8 years. At all ages some children drew one object inside the boundary of the other. It is argued that the results are composed of two tendencies, a gradual mastery of discrete scaling phenomena (e.g., “up” on the page means “further”) within a given style, and a set of decisions to be made between incompatible styles.  相似文献   
169.
While measurement of temperature as an index of circadian rhythmicity is not a difficult task with infrahuman subjects, long-term monitoring of deep body temperature with human subjects poses numerous measurement and safety problems. A preparation is described that is highly accurate, inexpensive, chronic, comfortable, and eliminates safety problems associated with more traditional methods of temperature measurement.  相似文献   
170.
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