全文获取类型
收费全文 | 2655篇 |
免费 | 152篇 |
出版年
2023年 | 19篇 |
2022年 | 26篇 |
2021年 | 36篇 |
2020年 | 73篇 |
2019年 | 59篇 |
2018年 | 105篇 |
2017年 | 92篇 |
2016年 | 103篇 |
2015年 | 93篇 |
2014年 | 94篇 |
2013年 | 352篇 |
2012年 | 131篇 |
2011年 | 132篇 |
2010年 | 104篇 |
2009年 | 92篇 |
2008年 | 146篇 |
2007年 | 124篇 |
2006年 | 106篇 |
2005年 | 83篇 |
2004年 | 70篇 |
2003年 | 88篇 |
2002年 | 76篇 |
2001年 | 63篇 |
2000年 | 37篇 |
1999年 | 33篇 |
1998年 | 30篇 |
1997年 | 24篇 |
1996年 | 32篇 |
1995年 | 23篇 |
1994年 | 26篇 |
1993年 | 19篇 |
1992年 | 18篇 |
1991年 | 16篇 |
1990年 | 18篇 |
1989年 | 14篇 |
1987年 | 12篇 |
1986年 | 10篇 |
1985年 | 14篇 |
1984年 | 18篇 |
1983年 | 15篇 |
1982年 | 18篇 |
1981年 | 13篇 |
1980年 | 16篇 |
1979年 | 16篇 |
1978年 | 15篇 |
1977年 | 17篇 |
1976年 | 9篇 |
1975年 | 10篇 |
1974年 | 9篇 |
1973年 | 14篇 |
排序方式: 共有2807条查询结果,搜索用时 15 毫秒
1.
2.
Erin M. Leddon Sandra R. Waxman Douglas L. Medin 《The British journal of developmental psychology》2011,29(3):375-395
Previous work on children's intuitive knowledge about the natural world has documented their difficulty in acquiring an overarching concept of biological life that includes plants as well as humans and non‐human animals. It has also suggested that the acquisition of fundamental biological concepts like alive and die may be influenced by the language used to describe them, as evidenced by differences between English‐ and Indonesian‐speaking children's performance in tasks involving these concepts. Here, we examine one particularly important source of linguistic information available to children during this acquisition process: everyday conversations with their parents. We take a cross‐linguistic approach in analysing the evidence available to English‐ and Indonesian‐speaking children as they acquire meanings for words corresponding to the concepts alive and die . Our analysis illustrates that young children acquiring English and Indonesian are faced with distinct problems, but that parental input in both languages does little to support the acquisition of broad, inclusive biological concepts. 相似文献
3.
Whether people compete or cooperate with each other has consequences for their own performance and that of organizations. To explain why people compete or cooperate, previous research has focused on two main factors: situational outcome structures and personality types. Here, we propose that—above and beyond these two factors—situational cues, such as the format in which people receive feedback, strongly affect whether they act competitively, cooperatively, or individualistically. Results of a laboratory experiment support our theorizing: After receiving ranking feedback, both students and experienced managers treated group situations with cooperative outcome structures as competitive and were in consequence willing to forgo guaranteed financial gains to pursue a—financially irrelevant—better rank. Conversely, in dilemma situations, feedback based on the joint group outcome led to more cooperation than ranking feedback. Our study contributes to research on competition, cooperation, interdependence theory, forced ranking, and the design of information environments. 相似文献
4.
5.
Sandra Anderson Schuh 《The Journal of value inquiry》1992,26(2):281-285
6.
7.
Psychological symptoms were found to be associated with a number of cognitive appraisal and demographic variables but predicted primarily by perceived lack of control among information seekers in the aftermath of the Three Mile Island accident. Cognitive appraisal variables were found to be interrelated in a way which suggests that appraisal of control and faith in experts mediate between perceived environmental threat and psychological symptoms among information seekers in the aftermath of technological disaster. Demographic variables such as education and evacuation status are viewed as mediators between environmental circumstances and cognitive appraisals. 相似文献
8.
Dr. Alastair J. Flint Sandra E. Black Irene Campbell-Taylor Gillian F. Gailey Carey Levinton 《Journal of psycholinguistic research》1992,21(5):383-399
In its early stages, Parkinson's disease (P.D.) may be difficult to distinguish from major depression (M.D.) leading to inappropriate management. Both illnesses are characterized by psychomotor retardation. The neurovegetative symptoms used to diagnose M.D. are not specific and in P.D. may be due to the physical illness itself. Currently, differentiation of the two disorders relies on subjective clinical observation. Improved diagnostic accuracy based on more objective data is needed. To this end, this study used computerized acoustic analysis to contrast speech patterns in P.D. and M.D. The sample consisted of 30 P.D. patients without depression or dementia, 30 patients with uncomplicated M.D., and 31 normal controls, each 60 years of age or over. Of the acoustic variables studied, M.D. patients had significantly reduced rates of speech compared with P.D. patients. The data suggest that this temporal measure of speech may be useful in the differentiation of P.D. and M.D. 相似文献
9.
Much of the methodology in stress research focuses on stress manifestation and organismic reactions to life’s crises. In contrast,
the present study sought to identify the major sources of stress and the nature of those sources. The results revealed a consistent
pattern in high and low stressors throughout the 3-year period of the study, and differences only of intensity between males
and females, not type of stress. Except for individuals’ temporal variations in critical events, the highest stressors for
the groups were external, primarily financial and time management. Internal sources, such as personal relationships and self-absorption,
were typically the lowest concerns. Everyday problems arising from current life styles seem to be significant sources of stress. 相似文献
10.
Dolores Subia BigFoot-Sipes Paul Dauphinais Teresa D. LaFromboise Sandra K. Bennett Wayne Rowe 《Journal of multicultural counseling and development》1992,20(3):113-122
Researchers examined the importance of similar ethnicity and the preference for a counselor of the same sex among American Indian secondary school students. 相似文献