全文获取类型
收费全文 | 2766篇 |
免费 | 153篇 |
专业分类
2919篇 |
出版年
2023年 | 33篇 |
2022年 | 17篇 |
2021年 | 33篇 |
2020年 | 62篇 |
2019年 | 62篇 |
2018年 | 78篇 |
2017年 | 110篇 |
2016年 | 101篇 |
2015年 | 80篇 |
2014年 | 70篇 |
2013年 | 395篇 |
2012年 | 111篇 |
2011年 | 147篇 |
2010年 | 75篇 |
2009年 | 88篇 |
2008年 | 101篇 |
2007年 | 104篇 |
2006年 | 93篇 |
2005年 | 76篇 |
2004年 | 61篇 |
2003年 | 71篇 |
2002年 | 81篇 |
2001年 | 33篇 |
2000年 | 25篇 |
1999年 | 26篇 |
1998年 | 27篇 |
1997年 | 18篇 |
1996年 | 28篇 |
1995年 | 18篇 |
1994年 | 22篇 |
1993年 | 17篇 |
1992年 | 31篇 |
1991年 | 31篇 |
1988年 | 18篇 |
1987年 | 23篇 |
1986年 | 27篇 |
1985年 | 28篇 |
1984年 | 31篇 |
1983年 | 27篇 |
1982年 | 35篇 |
1981年 | 24篇 |
1980年 | 29篇 |
1979年 | 24篇 |
1978年 | 26篇 |
1977年 | 24篇 |
1976年 | 23篇 |
1975年 | 19篇 |
1974年 | 31篇 |
1973年 | 23篇 |
1970年 | 17篇 |
排序方式: 共有2919条查询结果,搜索用时 15 毫秒
161.
Induced motion (IM) is illusory motion of a stationary test target opposite to the direction of the real motion of the inducing stimulus. We define egocentric IM as an apparent motion of the test target relative to the observer, and vection-entrained IM as an apparent motion of a stationary object along with an apparent motion of the self (vection) induced by the same stimulus. These two forms of IM are often confounded, and tests for distinguishing between them have not been devised. We have devised such tests. Our test for egocentric IM relies on evidence that this form of IM is due mainly to a misregistration of eye movements when optokinetic nystagmus (OKN) is inhibited, and on evidence that OKN is evoked only by stimuli in the plane of convergence. Our test for vection-entrained IM relies on evidence that vection is evoked only by the more distant of two superimposed inducing stimuli. Thus we found egocentric IM to be induced without vection or vection-entrained IM when subjects converged on a foreground moving display with a stationary display in the background, and vection-entrained IM to be induced without egocentric IM when subjects converged on a stationary-foreground display with a moving display in the background. The two types of IM were evoked in opposite directions at the same time when subjects converged on a foreground moving display while a background display moved in the opposite direction. The two forms of IM showed no signs of interaction, and we conclude that they rely on independent motion mechanisms that operate within distinct frames of reference. A control experiment suggested that the depth adjacency effect in IM is determined by the depth adjacency of the inducing stimulus to convergence, not just to the test target. 相似文献
162.
163.
164.
J H Howard S A Mutter D V Howard 《Journal of experimental psychology. Learning, memory, and cognition》1992,18(5):1029-1039
Serial pattern learning was investigated in a variation of the task introduced by Nissen and Bullemer (1987). We presented an asterisk at 1 of 4 spatial locations on each trial, and Ss either responded with a keypress or observed the event. The first 4 blocks contained 10 repetitions of a 10- or 16-element pattern, and the 5th block contained a random sequence. The difference in response time on the 5th random block and the previous patterned block served as an indirect measure of pattern learning. A direct measure was obtained in a final test block in which Ss predicted the next asterisk position. Equivalent learning occurred for responding and observing with indirect measures, but observation was superior with direct measures. These findings indicate that knowledge of serial order can develop through simple perceptual experience, and this is more available to deliberate recall than is knowledge acquired while responding. 相似文献
165.
Child‐directed teaching and social learning at 18 months of age: evidence from Yucatec Mayan and US infants 下载免费PDF全文
In several previous studies, 18‐month‐old infants who were directly addressed demonstrated more robust imitative behaviors than infants who simply observed another's actions, leading theorists to suggest that child‐directed interactions carried unique informational value. However, these data came exclusively from cultural communities where direct teaching is commonplace, raising the possibility that the findings reflect regularities in infants' social experiences rather than responses to innate or a priori learning mechanisms. The current studies consider infants' imitative learning from child‐directed teaching and observed interaction in two cultural communities, a Yucatec Mayan village where infants have been described as experiencing relatively limited direct instruction (Study 1) and a US city where infants are regularly directly engaged (Study 2). Eighteen‐month‐old infants from each community participated in a within‐subjects study design where they were directly taught to use novel objects on one day and observed actors using different objects on another day. Mayan infants showed relative increases in imitative behaviors on their second visit to the lab as compared to their first visit, but there was no effect of condition. US infants showed no difference in imitative behavior in the child‐directed vs. observed conditions; however, infants who were directly addressed on their first visit showed significantly higher overall imitation rates than infants who observed on their first visit. Together, these findings call into question the idea that child‐directed teaching holds automatic or universal informational value. 相似文献
166.
This study examined the role of gender of observer, parent, and child on judgments of the severity, appropriateness, and consequences of various forms of discipline. Young adults read stories describing a disciplinary encounter between parent and child and made required judgments. Consistent gender differences emerged. Females judged the discipline more harshly than males, rating it as more severe, more abusive, less appropriate, and more likely to result in emotional harm. Discipline of daughters was judged to be harsher than identical treatment of sons, particularly when the discipline was administered by the father. The implications of differential judgments are discussed. 相似文献
167.
Factors associated with juvenile detention truancy 总被引:1,自引:0,他引:1
Factors influencing truancy from a juvenile court treatment facility were investigated. Youth born in 1962 (N = 124) who were placed in the facility were compared for number of truancies, background, and personality variables. Results showed that males with prior adjudication for home or school truancy had a 65% probability of eloping from the court facility as compared to a 34% probability for youth adjudicated for other offenses. Most females were adjudicated for truancy offenses and showed a 62% probability of truancy while in the court facility. Further, for females who eloped and were returned, the probability of a subsequent truancy was above 80%. Personality characteristics of truants varied with sex: male truants were more likely to be conduct disordered youth for which impulsivity and disregard for social norms is prevalent; female truants appear more likely to be in conflict over autonomy issues. 相似文献
168.
Howard Sankey 《Philosophia》1995,24(3-4):405-415
169.
170.
Most previous studies of inhibition of return (IOR) have examined reaction time (RT) and accuracy. These effects have been observed via saccades to targets or with key-press responses. In this study the authors examined, for the first time, IOR in components of a selective reaching task in which participants directly reached for and depressed target keys. When the interval between cue and target was 600 ms, robust IOR effects were observed in RT to begin the reach, but no effects were observed in the movement components (movement time to complete the reach and the path of the reach). However, when the cue-target interval was short (200 ms), hand paths deviated toward the cue. The results suggest that although RT measures of IOR appear to reveal perceptual rather than action-based processes, action-based representations may be briefly activated by irrelevant cues, which can be observed via analysis of three-dimensional reach path. 相似文献