全文获取类型
收费全文 | 23541篇 |
免费 | 974篇 |
国内免费 | 13篇 |
专业分类
24528篇 |
出版年
2020年 | 277篇 |
2019年 | 270篇 |
2018年 | 460篇 |
2017年 | 403篇 |
2016年 | 420篇 |
2015年 | 286篇 |
2014年 | 399篇 |
2013年 | 1737篇 |
2012年 | 698篇 |
2011年 | 745篇 |
2010年 | 393篇 |
2009年 | 484篇 |
2008年 | 660篇 |
2007年 | 657篇 |
2006年 | 618篇 |
2005年 | 532篇 |
2004年 | 511篇 |
2003年 | 504篇 |
2002年 | 465篇 |
2001年 | 828篇 |
2000年 | 828篇 |
1999年 | 627篇 |
1998年 | 267篇 |
1997年 | 245篇 |
1996年 | 232篇 |
1993年 | 223篇 |
1992年 | 504篇 |
1991年 | 445篇 |
1990年 | 511篇 |
1989年 | 430篇 |
1988年 | 407篇 |
1987年 | 395篇 |
1986年 | 409篇 |
1985年 | 463篇 |
1984年 | 363篇 |
1983年 | 311篇 |
1982年 | 260篇 |
1979年 | 353篇 |
1978年 | 278篇 |
1977年 | 227篇 |
1976年 | 225篇 |
1975年 | 321篇 |
1974年 | 359篇 |
1973年 | 365篇 |
1972年 | 281篇 |
1971年 | 248篇 |
1969年 | 241篇 |
1968年 | 296篇 |
1967年 | 257篇 |
1966年 | 276篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
931.
932.
A cross-cultural examination of the attributions for the life satisfactions of the elderly was conducted by using a sample of 80 Asian-Indian and 80 United States retired citizens. It was hypothesized that factors of hard work, luck, family ties, religious faith, travel and recreation, personal abilities, money, social status, service to others and friendships would account for differences in the attributions for life-satisfactions of the two cultural groups. Results showed that more Asian than United States subjects reported satisfaction with life. Consistent with predictions, the attributions of the Asian group showed religious faith, service to others, family ties and luck as being very important factors contributing to life satisfaction. By contrast, more United States subjects reported that hard work, personal abilities, travel and recreation, and social status had significantly influenced their life satisfactions. Findings were interpreted in terms of cultural and socio-psychological variables which influence the attributions for life satisfactions. 相似文献
933.
Results of 1,579 observations of cars entering or exiting campus parking lots showed direct relationships between seat belt wearing and the intrusiveness of the engineering device designed to induce belt usage, and between device intrusiveness and system defeat. For example, all drivers with working interlocks or unlimited buzzer reminders were wearing a seat belt; but 62% of the systems with interlocks or unlimited buzzers had been defeated, and only 15.9% of the drivers in these cars were wearing a seat belt. The normative data indicated marked ineffectiveness of the negative reinforcement contingencies implied by current seat belt inducement systems; but suggested that unlimited buzzer systems would be the optimal system currently available if contingencies were developed to discourage the disconnection and circumvention of such systems. Positive reinforcement strategies are discussed that would be quite feasible for large-scale promotion of seat belt usage. 相似文献
934.
Within the context of a prospective longitudinal research design, the structure of personality and initial levels of drug use were used to predict, multivariately, later drug use among male and female adolescents. The findings indicated that personality and belief measures of nonconventionality provide a significant increment in the prediction of later drug use beyond a level achieved by knowing initial usage rates. In addition, other personality and belief measures yield further increments in the prediction of subsequent drug use. Developmentally, the results revealed a differentiation of drug use patterns across the year's time, with one pattern primarily reflecting alcohol use, and a second pattern primarily reflecting use of marijuana and ‘hard’ drugs. While both patterns were related to measures of nonconventionality, certain personality features distinguished between them. Emergent use of marijuana and ‘hard’ drugs was related to depression, mistrust and attractiveness, while emergent alcohol use was related to generosity, ambition, agility and cheerfulness. These results were cross-validated in two samples of subjects. Implications of the findings for adolescent psychosocial development are discussed. 相似文献
935.
Left-handers with an inverted handwriting posture have been found by Levy and Reid to have relatively bilateral representation of tachistoscopically tested verbal and spatial functions. On the assumption that such bilateral representation is inefficient, it was hypothesized that left-inverted subjects (N = 20) would score lower than left- and right-handers with normal handwriting postures (Ns = 64, 66 respectively) on spatial reasoning. Results were consistent with the hypothesis. Possible alternative explanations and directions for future research are outlined. 相似文献
936.
Planning: Theoretical considerations and empirical evidence 总被引:1,自引:0,他引:1
J. P. Das 《Psychological research》1980,41(2-3):141-151
Summary A study of processes rather than of abilities characterizes much of Luria's work on cognitive functions. The three major functional organizations in terms of cognitive functions are: arousal, coding, and planning. Each of these has been described with a special emphasis on planning. Tasks appropriate for demonstrating the processes of planning are discussed and the emergence of a planning factor through factor analytic work has been described. Considerations relating to the independence of planning and coding processes in the context of normal and abnormal development are presented next. Finally, planful behavior as an integral part of purposive behavior in humans is considered in the context of consciousness. 相似文献
937.
Stewart and Nejedlo discuss the use of the Career Development Pyramid as a model for career development and as a practical aid in career counseling. The model graphically depicts the synergistic relations of career choice factors, life-style, self-concept, and the specific job. The authors discuss the relationship between the quadrihedral model and current career development theories. They suggest applied uses of the pyramid and provide a working plan for copy and use by career development counselors. 相似文献
938.
Richard R. Rosinski Timothy Mulholland Douglas Degelman James Farber 《Attention, perception & psychophysics》1980,28(6):521-526
Although geometric information is altered when a picture’s viewing point is changed, such changes often do not affect perception. Two experiments assessed pictorial perception relative to the distortions introduced by viewing point dislocation. Results provide a psychophysical demonstration of pictorial compensation and suggest that it is based on the discrepancy between the actual and an assumed-correct viewing position. An explanation of pictorial compensation is offered that could be applied to direct picture perception and to picture-in-a-picture perception. 相似文献
939.
940.
This experiment investigated Allport's (1977) claim that normal subjects can be induced to make semantic errors of the type characterised by “deep dyslexia”. The procedure followed that used by Allport except that a subject based control for the chance level of semantic errors was included. The results replicated the original finding by producing a semantic error rate of 12·7%. It was shown, however, that this rate was not significantly higher than the calculated chance rate of 11·5%. It was concluded, therefore, that the semantic error rates reported by Allport can be accounted for in terms of a guessing artefact and thus they bear no relevance to the problem of deep dyslexia. 相似文献