全文获取类型
收费全文 | 44256篇 |
免费 | 1740篇 |
国内免费 | 21篇 |
出版年
2019年 | 446篇 |
2018年 | 715篇 |
2017年 | 685篇 |
2016年 | 726篇 |
2015年 | 491篇 |
2014年 | 666篇 |
2013年 | 3190篇 |
2012年 | 1163篇 |
2011年 | 1244篇 |
2010年 | 746篇 |
2009年 | 794篇 |
2008年 | 1147篇 |
2007年 | 1090篇 |
2006年 | 1035篇 |
2005年 | 898篇 |
2004年 | 877篇 |
2003年 | 880篇 |
2002年 | 845篇 |
2001年 | 1348篇 |
2000年 | 1352篇 |
1999年 | 1032篇 |
1998年 | 467篇 |
1997年 | 470篇 |
1996年 | 443篇 |
1992年 | 922篇 |
1991年 | 828篇 |
1990年 | 868篇 |
1989年 | 777篇 |
1988年 | 767篇 |
1987年 | 732篇 |
1986年 | 799篇 |
1985年 | 830篇 |
1984年 | 675篇 |
1983年 | 592篇 |
1982年 | 447篇 |
1981年 | 436篇 |
1979年 | 690篇 |
1978年 | 554篇 |
1977年 | 463篇 |
1976年 | 469篇 |
1975年 | 596篇 |
1974年 | 744篇 |
1973年 | 764篇 |
1972年 | 592篇 |
1971年 | 585篇 |
1970年 | 516篇 |
1969年 | 566篇 |
1968年 | 701篇 |
1967年 | 622篇 |
1966年 | 655篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
911.
Younger adult students between 19 and 24 years of age (M = 21.3 years), older adult students between 61 and 76 years of age (M = 67.9 years), and older adult nonstudents between 62 and 76 years of age (M = 68.5 years) were assessed for health (self-ratings of physical and mental health), social functioning (self-ratings of physical and mental activity, perceived role activity level, perceived roles, locus of control, and age-norm expectations), and cognitive functioning (Wechsler Adult Intelligence Scale-Revised vocabulary and block design, and paired associate memory). Age differences were observed in self-ratings of health, social roles, intellectual performance, and memory. No student status differences were observed. The results are discussed in terms of plasticity of intellectual function and characteristics of student status in later adulthood. 相似文献
912.
Speech processing involves rapid decoding and construction of meaning from a transitory acoustic signal. Because older adults have been found to be slower in performing many cognitive tasks, we hypothesized that they may have difficulty in immediate recall for speech of increasing input rate. Two experiments are reported in which both older and younger participants listened to and immediately recalled sentences that were systematically varied in speech rate and number of propositions. Although recall performance of the older adults showed a disproportionate decline when speech rate was increased, older adults, as well as the younger adults, were able to recall sentences of increasing propositional densities. We also found that the tendency to recall a greater proportion of main ideas than details (the levels effect) was enhanced by increased propositional density, and depressed by increased speech rate and increased age. These results are discussed in terms of an age-related change in the rate at which information can be processed in working memory. 相似文献
913.
Fluid intelligence belongs to that cluster of intellectual abilities evincing aging loss. To examine further the range of intellectual reserve available to aging individuals and the question of replicability in a new cultural and laboratory setting, 204 healthy older adults (mean age = 72 years; range = 60-86) participated in a short-term longitudinal training study. For experimental subjects, 10 sessions consisted of cognitive training involving two subability tests (Figural Relations, Induction) of fluid intelligence. The pattern of outcomes replicates and expands on earlier studies. Older adults have the reserve to evince substantial increases in levels of performance in fluid intelligence tests. Transfer of training, however, is narrow in scope. Training also increases accuracy of performance and the ability to solve more difficult test items. Difficulty level was estimated in a separate study, with a comparable sample of N = 112 elderly adults. Future research is suggested to examine whether intellectual reserve extends to near-maximum levels of performance. 相似文献
914.
Short scales were developed to measure three broad dimensions of personality in the National Health and Nutrition Examination Survey (NHANES I) Epidemiologic Followup Study. Items to measure neuroticism were selected rationally from the General Well-Being Schedule, and items to measure extraversion and openness to experience were selected by multiple regression from the NEO Personality Inventory. In a sample of 654 men and women from the Augmented Baltimore Longitudinal Study of Aging, all three short scales showed clear evidence of convergent and discriminant validity against full scales in self-reports, and against peer and spouse ratings. Because they were developed and validated on a sample with a comparable age range, the NHANES scales should be useful in examining age trends in these three personality dimensions in a national sample. 相似文献
915.
Barbara E. DiCocco L.C.S.W. 《Contemporary Family Therapy》1986,8(1):50-61
When presented with a behavioral problem or symptom expression that involves two systems, such as a serious school-related problem, the therapist needs to design an approach that will intervene effectively and expeditiously in both systems. This paper offers a guide to stages of problem escalation and therapeutic intervention that is intended to aid the problem-solver's thinking processes in approaching a troubled situation that involves two systems, the school and the home. 相似文献
916.
The authors put forward a theory of family mythologizing as a process of induction, trance, and ritual. These phenomena, in the context of expressive language, comprise myths. Mythologizing is assumed to be part of normative development. All individuals and families employ myths as schemata for organizing highly complex yet cognitively inexplicable relationships. The authors propose a systemic explanation for the operations of mythologizing and present case illustrations. 相似文献
917.
Homosexuals, bisexuals, and heterosexuals were compared on self-reported love preferences and ideals. In general, the three groups tended to agree on ideal characteristics of love objects, love relationships, and love related beliefs. Nevertheless, the groups differed significantly on preferences and beliefs related to love-object sex, residential proximity, ethnic background, physical intimacy, freedom from feelings of jealousy, sexual fidelity, emotional intimacy, and the importance of religious or legal acknowledgment.An early version of this paper was presented at the Annual Meeting of the National Council on Family Relations, in San Francisco, October 1984, Journal Series No. 2973 of the Hawaii Institute of Tropical Agriculture and Human Resources. 相似文献
918.
919.
This article describes some essential computer skills needed by psychology students seeking careers in business. It is suggested that students become familiar with computer software packages in the following areas: statistical analyses, wordprocessing, spreadsheets, data base managers, and graphics. Discussion is provided.Paper presented at the 57th Annual Convention of the Midwestern Psychological Association, Chicago, Illinois, May 1–3, 1985. 相似文献
920.