全文获取类型
收费全文 | 89671篇 |
免费 | 3601篇 |
国内免费 | 54篇 |
出版年
2020年 | 1003篇 |
2019年 | 1232篇 |
2018年 | 1737篇 |
2017年 | 1815篇 |
2016年 | 1856篇 |
2015年 | 1291篇 |
2014年 | 1559篇 |
2013年 | 7550篇 |
2012年 | 2727篇 |
2011年 | 3063篇 |
2010年 | 1871篇 |
2009年 | 1831篇 |
2008年 | 2698篇 |
2007年 | 2602篇 |
2006年 | 2302篇 |
2005年 | 2062篇 |
2004年 | 1967篇 |
2003年 | 1895篇 |
2002年 | 1889篇 |
2001年 | 2997篇 |
2000年 | 2906篇 |
1999年 | 2117篇 |
1998年 | 1090篇 |
1997年 | 943篇 |
1996年 | 844篇 |
1995年 | 844篇 |
1994年 | 835篇 |
1993年 | 838篇 |
1992年 | 1785篇 |
1991年 | 1705篇 |
1990年 | 1657篇 |
1989年 | 1540篇 |
1988年 | 1471篇 |
1987年 | 1458篇 |
1986年 | 1432篇 |
1985年 | 1544篇 |
1984年 | 1213篇 |
1983年 | 1022篇 |
1979年 | 1185篇 |
1978年 | 907篇 |
1975年 | 1070篇 |
1974年 | 1152篇 |
1973年 | 1147篇 |
1972年 | 1019篇 |
1971年 | 881篇 |
1970年 | 807篇 |
1969年 | 875篇 |
1968年 | 1029篇 |
1967年 | 942篇 |
1966年 | 941篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
942.
I Fagioli C Cipolli P Baroncini A Fumai P Salzarulo 《The American journal of psychology》1989,102(3):307-320
This study investigated ways in which predictions from interference theory might explain partial or total failure in the morning recall of mental sleep experience (MSE) episodes reported after provoked night awakening. Interference could take place either between the contents of one MSE episode (intraserial interference) or between the contents of different MSE episodes (interserial interference) and would be more likely to affect morning recall where similar (i.e., interrelated) contents in MSEs are involved. If interference were mainly intraserial, in the morning there would be no change in the difficulty of retrieving interrelated contents, whereas, if it were mainly interserial, there would be increased difficulty in the retrieval of such contents. All the possible pairs of reports obtained by awakening 8 subjects four times in REM sleep during each of four experimental nights spaced at weekly intervals were scored for interrelated contents, using Clark's (1970) system of analysis of paired units, which operates by matching linguistic features. Results showed that interrelations in morning report pairs are as frequent as in night report pairs, maintaining the same linguistic characteristics and with little transfer of contents from one MSE to another. Overall these findings are compatible with the hypothesis that interference is primarily intraserial rather than interserial. It is consequently suggested that morning recall failure may be due to temporary blocking of retrieval. 相似文献
943.
944.
The development of self-consciousness and its relationship to emotional disturbance was examined in early and late adolescence. The Imaginary Audience Scale was administered to emotionally disturbed and nondisturbed adolescents. As predicted, results indicated that self-consciousness decreased with age in nondisturbed adolescents. For the emotionally disturbed adolescents, the development of self-consciousness in temporary situations did not follow consistent patterns, as indicated by interaction effects. A significant negative relationship was found between intelligence test scores and self-consciousness in the disturbed group. The findings support the premise that social-cognitive shifts found in early to late adolescence are disrupted in disturbed populations. The mediating role of social experience as a factor in cognitive and emotional development is discussed. 相似文献
945.
K L Fingerman 《Adolescence》1989,24(93):1-18
The relationship between family background, sexual behavior, and sex role typing was examined in 44 female and 47 male 15- to 17-year-old subjects at a New England preparatory school using verbal recall, self-report, and background information. Mother's profession was the best correlate of adolescent sexual behavior. The Spence Personal Attributes scale was correlated with sexual behavior in females and the Essay Recall measure was correlated with sexual behavior for males. Theoretical reasons for these relations are discussed. 相似文献
946.
The emergence of AIDS as an untreatable, lethal disease, responding to educational prevention strategies in high-risk populations, has brought the issues of sex education in the public schools to the forefront. However, administrators, teachers, and parents perceive different barriers to sex education implementation. This study, undertaken in a northeastern, multigenerational, ethnic city, characterized by adolescent pregnancy rates a third higher than the state overall, polled 42 junior and senior high school administrators regarding educational priorities, perceived barriers to expansion of sex education, and preferred methods of introducing sex education. Administrators perceive parents as a major barrier to the introduction of more formalized sex education in their schools. Paradoxically, these same administrators felt that parents were generally uncomfortable in talking to their children about human sexuality. Recommendations are offered from existing models of health education for resolution of administrators' conflicting views on parental roles. 相似文献
947.
Adolescent school performance following parental divorce: are there family factors that can enhance success? 总被引:1,自引:0,他引:1
Most research on the effects of divorce on children has focused on delineation of specific areas of child maladjustment. A more optimistic approach seeks to identify variables that may mediate negative effects of a stressor, such as parental divorce. The goal of this study was to examine the relationship between one area of child adjustment, school achievement, and family factors which may mediate the negative influence of divorce. The subjects were 71 early adolescents and their recently divorced mothers. The adolescents were divided into low, medium, and high grade achievement groups. Analyses of variance and subsequent Newman-Keuls tests revealed that adolescents with high grade point averages had mothers with a lower level of depression, a higher educational level, less conflict with their ex-spouse, and less intense levels of conflict between mother and adolescent than those in the low grade point average group. A discriminant analysis resulted in a two-variable equation which accounted for 33% of the variance between low and high grade achievers. The two variables were mother's report of conflict between her and her ex-spouse in front of the adolescent and the adolescent's report of the intensity of arguments between him/herself and mother. These results indicated that school performance following divorce is not uniform for all adolescents and that family factors may mediate scholastic achievement problems. 相似文献
948.
The purpose of this study was to examine differences in older adolescent and adult females' perceptions of age-appropriate behavior in adults. Subjects were three generations of maternally related females (95 older adolescents, 78 mothers, 83 grandmothers) who were administered a questionnaire designed to assess age-appropriate behaviors in three broad categories: recreation, occupation/career, and family. Major findings were that older adolescents were most tolerant of behaviors performed by individuals at varying ages while older women most closely ascribed to age constraints, and that the greatest agreement on appropriateness of age constraints concerned family relationships while least agreement concerned recreational activities. Results support the view that adolescents' values on family issues are consistent with those of their parents, and suggest that adherence to age norms increases throughout the life span or are the result of generational differences in socialization. 相似文献
949.
The Social Phobia and Anxiety Inventory (SPAI) is an empirically derived self-report inventory developed as a specific measure of social phobia. The current investigation included two studies. The first examined the correlation of the SPAI with daily social behavior of a clinic sample of social phobics. The results indicated that the SPAI provides a reasonable indication of the distress experienced during daily social encounters in three dimensions: behavior, cognitions, and overall distress. The second study examined the validity of the SPAI with reference to the somatic response and avoidance behavior of social phobics. The results indicated that the somatic items of the SPAI are related to the somatic response of social phobics and that performance on the SPAI is associated with avoidance behavior in an anxiety-producing task. 相似文献
950.
Cognitive bias, i.e. overestimates of subjective probability and cost of catastrophic events, and irrational belief were explored as predictors of avoidance. Three groups-anxiety disordered clients, a mixed group of clinic outpatients, and normals--were administered several self-report inventories. Multiple regression analyses were used to investigate a modified version of the Agoraphobic Cognitions Questionnaire, the Belief Scale, and the Body Sensations Questionnaire as predictors of avoidance, as measured by the Mobility Inventory. It was hypothesized that frequency x probability x cost of catastrophic cognitions (and the occurrence of the events they represent) would be a better predictor of avoidance than frequency alone. It was also hypothesized that irrational thinking would be a significant predictor of avoidance. The results generally supported the hypotheses, with subjective probability emerging as a particularly potent predictor of avoidance. Theoretical and clinical implications are discussed. 相似文献