全文获取类型
收费全文 | 1687篇 |
免费 | 111篇 |
出版年
2023年 | 12篇 |
2022年 | 15篇 |
2021年 | 26篇 |
2020年 | 25篇 |
2019年 | 38篇 |
2018年 | 53篇 |
2017年 | 54篇 |
2016年 | 56篇 |
2015年 | 45篇 |
2014年 | 35篇 |
2013年 | 186篇 |
2012年 | 70篇 |
2011年 | 64篇 |
2010年 | 40篇 |
2009年 | 54篇 |
2008年 | 73篇 |
2007年 | 57篇 |
2006年 | 72篇 |
2005年 | 53篇 |
2004年 | 38篇 |
2003年 | 63篇 |
2002年 | 37篇 |
2001年 | 29篇 |
2000年 | 37篇 |
1999年 | 20篇 |
1997年 | 19篇 |
1996年 | 21篇 |
1995年 | 15篇 |
1994年 | 21篇 |
1992年 | 16篇 |
1991年 | 18篇 |
1990年 | 28篇 |
1989年 | 23篇 |
1988年 | 23篇 |
1987年 | 23篇 |
1986年 | 16篇 |
1985年 | 36篇 |
1984年 | 21篇 |
1983年 | 23篇 |
1982年 | 16篇 |
1981年 | 20篇 |
1979年 | 18篇 |
1978年 | 17篇 |
1977年 | 16篇 |
1976年 | 11篇 |
1975年 | 14篇 |
1974年 | 18篇 |
1973年 | 14篇 |
1968年 | 11篇 |
1966年 | 11篇 |
排序方式: 共有1798条查询结果,搜索用时 15 毫秒
21.
Tiffany Field Nitza Vega-Lahr Frank Scafidi Sheri Goldstein 《Infant behavior & development》1986,9(4)
To determine the differential effects of maternal emotional and physical unavailability on infant interaction behavior, 4-month-old infants were subjected to the mothers' still-face and to a brief separation from the mother. Although the infants became more negative and agitated during both conditions, the still-face was more stressful. 相似文献
22.
Frank D. Lewis William F. Blackerby Janet Rainwater Ross Mark L. Guth Ronald F. Cronkey Melvin J. White Tina Cook 《Behavioral Interventions》1986,1(4):265-274
This study evaluated the relative efficacy of long (1 minute) and short (15 seconds) durations of negative practice for reducing self-stimulatory leg pounding of a traumatically brain-injured adult. In individual social skill training classes, long negative practice and short negative practice were administered concurrently in an alternating treatments design. Generalization of treatment effects outside of training sessions was assessed during the client's lunch period. The results revealed that both durations of negative practice were equally effective in reducing leg pounding during training sessions. However, the effects of training did not generalize to settings in which the practice contingency was not enforced. Pounding was more frequent and negative practice somewhat less effective during periods of high social stimulation. 相似文献
23.
24.
The present study examined 8-12-year-old children's perceptions of parents' responses to sons and daughters experiencing interpersonal conflicts. In general, the children expected parents to respond in a manner consistent with traditional instrumental-expressive sex-role stereotypes. The implication of these findings for inadequacies in the socialization of interpersonal problem-solving styles in boys and girls is discussed. 相似文献
25.
Few studies have evaluated best friendship dissolutions and especially the circumstances surrounding the dissolutions. In this exploratory study of young adolescents (N = 273, Mage = 11.83 years; 51% boys), we investigate young adolescents' experiences with two types of best friendship dissolution (complete dissolutions, downgrade dissolutions) and two characteristics of such experiences: initiation status (self- versus friend-initiation) and emotional reactions (degree of happiness, anger, sadness, and embarrassment). We also consider whether these characteristics of best friendship dissolutions are related to psychological difficulties (loneliness, depressive symptoms). Results indicated that most young adolescents perceive their friends initiated their recent complete and downgrade dissolutions. When young adolescents did initiate their complete dissolutions, however, they reported less negative (anger) and more positive (happiness) emotional responses. Initiation status was not related to psychological difficulties, but variability in several types of emotional responses (e.g., embarrassment) was related to variability in loneliness and depressive symptoms. Findings underscore the importance of considering not only the type of dissolution, but also the circumstances surrounding dissolutions, during early adolescence. 相似文献
26.
Most studies of ambiguity aversion rely on experimental paradigms involving monetary bets. Thus, the extent to which ambiguity aversion occurs outside of such contexts is much less understood, particularly when the situation cannot easily be reduced to numerical terms. The present work seeks to understand whether people prefer to avoid ambiguous decisions in a variety of different qualitative domains (e.g., work, family, love, friendship, exercise, study, and health), and, if so, to determine the role played by prior beliefs in those domains. Across three studies, we presented participants with 24 vignettes and measured the degree to which they preferred risk to ambiguity in each. We also asked them for their prior probability estimates about the likely outcomes in the ambiguous events. Ambiguity aversion was observed in the vast majority of vignettes, but at different magnitudes. It was predicted by whether the vignette involved gain or loss as well as by people's prior beliefs; however, the heterogeneity between people meant that the role of prior beliefs was only evident in an individual-level analysis (i.e., not at the group level). Our results suggest that the desire to avoid ambiguity occurs in a wide variety of qualitative contexts but to different degrees for different people and may be partially driven by unfavorable prior estimates of the likely outcomes of the ambiguous events. 相似文献
27.
28.
Murray J. White 《Attention, perception & psychophysics》1970,8(2):107-109
The effect of retinal locus on the letter-span error function was investigated by requiring Ss to fixate at the left, middle, or right of lines of letters presented for 100 msec. Stimulus presentations consisted of lines of eight letters presented across the visual field, and lines of four letters presented alternately in the left and right visual hemifields. Locus of fixation and relative letter position were found to be significantly related to whether or not a letter was correctly localized. A significant interaction between locus of fixation and letter position was observed. 相似文献
29.
30.