全文获取类型
收费全文 | 903篇 |
免费 | 71篇 |
专业分类
974篇 |
出版年
2024年 | 4篇 |
2023年 | 14篇 |
2022年 | 7篇 |
2021年 | 11篇 |
2020年 | 36篇 |
2019年 | 25篇 |
2018年 | 34篇 |
2017年 | 38篇 |
2016年 | 54篇 |
2015年 | 33篇 |
2014年 | 55篇 |
2013年 | 96篇 |
2012年 | 64篇 |
2011年 | 62篇 |
2010年 | 32篇 |
2009年 | 28篇 |
2008年 | 31篇 |
2007年 | 51篇 |
2006年 | 34篇 |
2005年 | 18篇 |
2004年 | 25篇 |
2003年 | 20篇 |
2002年 | 14篇 |
2001年 | 8篇 |
2000年 | 7篇 |
1999年 | 7篇 |
1997年 | 4篇 |
1996年 | 7篇 |
1994年 | 6篇 |
1993年 | 5篇 |
1991年 | 6篇 |
1990年 | 6篇 |
1988年 | 4篇 |
1987年 | 8篇 |
1985年 | 6篇 |
1984年 | 6篇 |
1983年 | 6篇 |
1982年 | 5篇 |
1981年 | 4篇 |
1979年 | 6篇 |
1978年 | 7篇 |
1977年 | 7篇 |
1976年 | 5篇 |
1974年 | 4篇 |
1973年 | 4篇 |
1970年 | 4篇 |
1967年 | 3篇 |
1966年 | 3篇 |
1962年 | 3篇 |
1959年 | 3篇 |
排序方式: 共有974条查询结果,搜索用时 15 毫秒
191.
Valerie M. Volkert Dorothea C. Lerman Nathan A. Call Nicole Trosclair‐Lasserre 《Journal of applied behavior analysis》2009,42(1):145-160
Extinction‐induced resurgence is the recurrence of previously reinforced behavior when another behavior is placed on extinction (Lieving, Hagopian, Long, & O'Connor, 2004). This phenomenon may account for some instances of treatment relapse when problem behavior recovers during extinction‐based treatments. The current study sought to determine whether resurgence of problem behavior would reliably occur with 5 participants who received treatment with FCT. Results showed that problem behavior reemerged for all but 1 participant when the communicative response was exposed to extinction or thin schedules of reinforcement. These findings suggest that resurgence may account for some instances of response recovery during treatment, and that the described procedure may be useful for the further study of resurgence and eventual prevention of this phenomenon. 相似文献
192.
Nathan A. Call Ryan S. Pabico Joanna E. Lomas 《Journal of applied behavior analysis》2009,42(3):723-728
Few direct‐assessment procedures are designed to identify potential negative reinforcers (e.g., including demands in the escape condition of functional analyses). Two participants were systematically exposed to a series of demands nominated by caregivers as potential negative reinforcers. Sessions ended following the first instance of problem behavior, and a hierarchy of demand aversiveness was created based on the latency to the first problem behavior. Subsequent functional analyses confirmed the predictive value of the hierarchy, with shorter latency demands consistently producing more differentiated functional analysis outcomes. 相似文献
193.
Behavioral reactivity to novel stimuli in the first half‐year of life has been identified as a key aspect of early temperament and a significant precursor of approach and withdrawal tendencies to novelty in later infancy and early childhood. The current study examines the neural signatures of reactivity to novel auditory stimuli in 9‐month‐old infants in relation to prior temperamental reactivity. On the basis of the assessment of behavioral reactivity scores at 4 months of age, infants were classified into groups of high negatively reactive and high positively reactive infants. Along with an unselected control group, these groups of temperamentally different infants were given a three‐stimulus auditory oddball task at 9 months of age which employed frequent standard and infrequent deviant tones as well as a set of complex novel sounds. In comparison to high positively reactive and control infants, high negatively reactive infants displayed increased amplitude of a positive slow wave in the ERP response to deviant tones compared to standard tones. In contrast, high positively reactive infants showed a larger novelty P3 to the complex novel sounds. Results are discussed in terms of optimal levels of novelty for temperamentally different infants. 相似文献
194.
An unresolved issue in the study of sentence comprehension is whether the process of gap-filling is mediated by the construction of empty categories (traces), or whether the parser relates fillers directly to the associated verb's argument structure. We conducted an event-related potentials (ERP) study that used the violation paradigm to examine the time course and spatial distribution of brain responses to ungrammatically filled gaps. The results indicate that the earliest brain response to the violation is an early left anterior negativity (eLAN). This ERP indexes an early phase of pure syntactic structure building, temporally preceding ERPs that reflect semantic integration and argument structure satisfaction. The finding is interpreted as evidence that gap-filling is mediated by structurally predicted empty categories, rather than directly by argument structure operations. 相似文献
195.
Two studies tested the hypothesis that occupying a position of low power increases the likelihood of laughter, presumably as a means of gaining friends and supporters. In Study 1, participants laughed more at an interviewer's jokes when the interviewer controlled their cash rewards than in the absence of monetary contingencies. Study 2 found that low-power participants (manipulated again by expecting that someone else would decide their cash rewards) laughed more than high-power participants even when they were alone. Low power also increased laughing at a fellow low-power coworker. These findings suggest that low power motivates interest in making friends and hence increases behaviors that promote social bonding. 相似文献
196.
Inspection time (IT), an information-processing correlate of psychometric intelligence, has been extensively studied. Previous research has shown that IT is a reliable correlate of psychometric intelligence across different developmental periods, mirroring developmental trends of fluid intelligence. Despite this extensive previous literature, very little is known about the biological basis of IT. In the present review, we discuss recent results from our laboratories examining the neurochemical determinants of IT. In this review, we outline the significance of several studies in which performance on the IT task is measured before and after modulating key human central nervous system (CNS) neurotransmitters and receptor systems (e.g., cholinergic, serotonergic, noradrenergic, and dopaminergic systems). The results of these studies indicate a primarily cholinergic basis for IT, although other aspects of psychometric intelligence may have serotonergic and dopaminergic determinants in addition to a cholinergic basis. The results are consistent with data reporting cholinergic depletion and impaired IT performance in dementia of the Alzheimer's type (DAT). Speculatively, we propose that compounds that enhance the release of the neurotransmitter acetylcholine (Ach) will improve IT and the variance that IT shares with IQ test performance. 相似文献
197.
Margaret C. Moulson Kristin Shutts Nathan A. Fox Charles H. Zeanah Elizabeth S. Spelke Charles A. Nelson 《Developmental science》2015,18(2):298-313
We tested the capacity to perceive visual expressions of emotion, and to use those expressions as guides to social decisions, in three groups of 8‐ to 10‐year‐old Romanian children: children abandoned to institutions then randomly assigned to remain in ‘care as usual’ (institutional care); children abandoned to institutions then randomly assigned to a foster care intervention; and community children who had never been institutionalized. Experiment 1 examined children's recognition of happy, sad, fearful, and angry facial expressions that varied in intensity. Children assigned to institutional care had higher thresholds for identifying happy expressions than foster care or community children, but did not differ in their thresholds for identifying the other facial expressions. Moreover, the error rates of the three groups of children were the same for all of the facial expressions. Experiment 2 examined children's ability to use facial expressions of emotion to guide social decisions about whom to befriend and whom to help. Children assigned to institutional care were less accurate than foster care or community children at deciding whom to befriend; however, the groups did not differ in their ability to decide whom to help. Overall, although there were group differences in some abilities, all three groups of children performed well across tasks. The results are discussed in the context of theoretical accounts of the development of emotion processing. 相似文献
198.
199.
200.