全文获取类型
收费全文 | 1121篇 |
免费 | 82篇 |
出版年
2024年 | 4篇 |
2023年 | 6篇 |
2022年 | 7篇 |
2021年 | 19篇 |
2020年 | 23篇 |
2019年 | 32篇 |
2018年 | 39篇 |
2017年 | 52篇 |
2016年 | 52篇 |
2015年 | 34篇 |
2014年 | 31篇 |
2013年 | 131篇 |
2012年 | 60篇 |
2011年 | 75篇 |
2010年 | 37篇 |
2009年 | 29篇 |
2008年 | 46篇 |
2007年 | 43篇 |
2006年 | 38篇 |
2005年 | 46篇 |
2004年 | 41篇 |
2003年 | 40篇 |
2002年 | 39篇 |
2001年 | 13篇 |
2000年 | 10篇 |
1999年 | 15篇 |
1998年 | 16篇 |
1997年 | 10篇 |
1996年 | 8篇 |
1995年 | 8篇 |
1994年 | 12篇 |
1993年 | 7篇 |
1992年 | 4篇 |
1991年 | 13篇 |
1989年 | 10篇 |
1987年 | 9篇 |
1986年 | 6篇 |
1985年 | 10篇 |
1984年 | 11篇 |
1983年 | 11篇 |
1982年 | 14篇 |
1981年 | 12篇 |
1980年 | 6篇 |
1979年 | 12篇 |
1977年 | 7篇 |
1975年 | 6篇 |
1974年 | 7篇 |
1973年 | 6篇 |
1971年 | 5篇 |
1970年 | 8篇 |
排序方式: 共有1203条查询结果,搜索用时 15 毫秒
131.
132.
Jefferson T 《Science and engineering ethics》1998,4(2):135-140
Redundant publication in biomedical sciences is the presentation of the same information or data set more than once. Forms
of redundant publication include “salami slicing”, in which similar text accompanies data presented in disaggregated fashion
in different publications and “duplicate or multiple publication” in which identical information is presented with a virtually
identical text. Estimates of prevalence of the phenomenon put it at 10 to 25% of published literature. Redundant publication
can be considered unethical, or fraudulent, when the author(s) attempt to conceal the existence of duplicate publication from
editors and readers. Redundant publication in the area of clinical trials is potentially dangerous as it tends to overestimate
the effects of interventions. The scientific community at large and governments should take urgent steps to safeguard the
public from the possible effects of fraudulent multiple publications. 相似文献
133.
If a group of foragers distributes among resource patches according to the ideal free distribution, the relative number of foragers in each patch should match the relative amount of resource obtained there, unless deviations arise from factors such as incomplete information or interforager interference. In analogy to individual choice, such effects may produce undermatching—group distribution falling short of resource distribution—or overmatching—group distribution overshooting resource distribution. In the present experiments, a flock of about 30 pigeons distributed between two patches with continuous inputs of green peas. Competition was varied by changing the size or extent of the patches. When the patches were areas or troughs, some undermatching occurred. When the patches were small bowls, strong undermatching occurred. When travel was required to switch patches, undermatching decreased slightly. A visual barrier that prevented pigeons from seeing one patch from the other had no effect. Overall rate of food delivery, varied over a wide range, had no effect. It appeared that the mechanism of flock distribution depended on comparisons between patches that were successive rather than simultaneous. Although most pigeons participated in the experiments, and different pigeons participated to different extents, individual pigeons tended to be consistent in the extent of participation from session to session, suggesting the possibility that participation might reflect competitive ability. Examination of the preferences and switching of individual pigeons revealed no consistency within or across individuals. It appeared that the flock's distribution was a truly emergent phenomenon, in the sense that results at the level of the flock in no way paralleled behavior at the level of the individual. 相似文献
134.
B H Yom I A Kraft P E Bradley J A Wakefield E B Doughtie J A Cox 《Journal of personality assessment》1975,39(1):64-69
Using canonical analysis, a common factor in the MMPI scales of husbands and wives was found. The Sc, Pd, and Hs scales for both the husbands and the wives contributed heavily to the relationship. Other scales contributing to the correlation between the personality components of the pairs were F, Hy Pt, and Si for the husbands and Pa for the wives. The results were interpreted as indicating areas of homogeneity and heterogeneity in the personalities of married couples. 相似文献
135.
Dr. David Marholin II Warren M. Steinman Elizabeth T. McInnis Tom B. Heads 《Journal of abnormal child psychology》1975,3(1):11-25
Six institutionalized conduct-problem children performed in a classroom under three reinforcement conditions: (1) noncontingent reinforcement: (2) reinforcement for being on task and (3) reinforcement for the accuracy and rate fo their academic behavior. Within each of these conditions, the teacher was either present throughout the class session or absent for a portion of the session. In the teacher's absence, on-task behavior was markedly reduced and disruption was markedly increased, regardless of the reinforcement condition in operation. In contrast, the teacher's absence had no effect on academic accuracy and had a major effect on academic rate only when reinforcement was delivered noncontingently. Furthermore, the extent to which the children became disruptive in the teacher's absence was reduced when reinforcement was contingent upon academic accuracy and rate, instead of being contingent upon being on task or delivered noncontingently. It is suggested that the reinforcement of academic behavior, rather than on-task behavior or classroom social behavior, not only will improve the latter behaviors as well, but possibly also make them less dependent upon the presence and continued surveillance of the teacher. 相似文献
136.
137.
138.
Examination of efficacious,efficient, and socially valid error‐correction procedures to teach sight words and prepositions to children with autism spectrum disorder
下载免费PDF全文
![点击此处可从《Journal of applied behavior analysis》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Tiffany Kodak Vincent Campbell Samantha Bergmann Brittany LeBlanc Eva Kurtz‐Nelson Tom Cariveau Shaji Haq Patricia Zemantic Jacob Mahon 《Journal of applied behavior analysis》2016,49(3):532-547
Prior research shows that learners have idiosyncratic responses to error‐correction procedures during instruction. Thus, assessments that identify error‐correction strategies to include in instruction can aid practitioners in selecting individualized, efficacious, and efficient interventions. The current investigation conducted an assessment to compare 5 error‐correction procedures that have been evaluated in the extant literature and are common in instructional practice for children with autism spectrum disorder (ASD). Results showed that the assessment identified efficacious and efficient error‐correction procedures for all participants, and 1 procedure was efficient for 4 of the 5 participants. To examine the social validity of error‐correction procedures, participants selected among efficacious and efficient interventions in a concurrent‐chains assessment. We discuss the results in relation to prior research on error‐correction procedures and current instructional practices for learners with ASD. 相似文献
139.
Richard M. Morley Victoria A. Terranova Shannon N. Cunningham Guliz Kraft 《Journal of aggression, maltreatment & trauma》2016,25(5):503-517
The main focus of this article is to conduct an exploratory investigation of self-compassion, a positive indicator of mental health, as a predictor of violence and criminality within a sample of prisoners. Correlation and regression analyses were used to explore the relationship that self-compassion has with self-control, self-esteem, and social connectedness. Associations between self-compassion and the subscales of self-control were also examined. Results from both correlational analysis and regression indicate that self-compassion is correlated with all 3 variables. Correlations revealed that self-compassion was related to all 6 subscales of self-control. Regression, however, revealed that impulsivity was the only predictor of self-compassion. Further analysis revealed problems with multicollinearity. Implications and limitations of these results are discussed. 相似文献
140.