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31.
Denny C. Lecompte 《Memory & cognition》1992,20(5):563-572
When a sequence of visual stimuli is presented in a fixed location, immediate serial recall of the sequence is characterized by only a small recency effect. According to Battacchi, Pelamatti, and Umiltà (1990), the distribution of visual stimuli over space, as well as time, greatly enhances the recency effect. After an initial failure to find a strong visual recency effect with distributed presentation (Experiment 1), in the remaining experiments an attempt was made to more closely approximate Battacchi et al.'s methodology by eliminating articulatory suppression (Experiments 2-7), using their stimuli (Experiments 3-7), blocking conditions (Experiments 4-7), requiring written rather than typed responses (Experiments 5-7), and using their list length (Experiments 6 and 7). Nevertheless, even when their method was followed as closely as possible (Experiment 7), distributed presentation did not produce a strong visual recency effect. The influence of distributed presentation on the visual recency effect would seem to be, at best, limited. 相似文献
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Frederick M. Denny Margaret R. Miles Charles Hallisey Earle H. Waugh 《Teaching Theology & Religion》1998,1(1):13-19
Joachim Wach's classic 1924 treatment of two types of teaching and learning relationships is summarized by Professor Denny and commented on from three contemporary perspectives by three teaching scholars who raise the basic question, “Are Wach's models of student and disciple adequate for the nineties?” Following an introduction by Frederick M. Denny, the contributions presented are: I. Are Wach's Models of Student and disciple Adequate for the Nineties?, by Margaret R. Miles, II. Response to Joachim Wach's “Master and Disciple: Two Religio-Sociological Studies”: Buddhism, by Charles Hallisey and III. Wach and the Double Truth, by Earle H. Waugh. 相似文献
34.
Martha J. Coutinho Ph.D. R. Kenton Denny Ph.D. 《Journal of child and family studies》1996,5(2):207-227
Despite the federal mandate to identify and provide appropriate educational and related services to children and youth with serious emotional disturbance (SED), the national profile portrays exceptionally low rates of identification; unacceptably low rates of school completion; high rates of placement in segregated environments; evidence that economic and demographic factors substantially affect identification, placement, and school completion; and a mixed, although mostly discouraging picture of outcomes after leaving the educational system. Recent national leadership, comprised of strategic planning, research, and demonstration initiatives has attained considerable momentum and is intended to improve outcomes for children with SED. Significant changes are anticipated as a result of the upcoming reauthorization of the statute governing special education and related services. These changes reflect a 20 year perspective regarding the benefits and shortcomings of current eligibility criteria and discretionary initiatives for improving outcomes for children with disabilities. The manner in which these changes may affect prospects for better serving children with SED is discussed. 相似文献
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Jessica A. Cooper Marissa A. Gorlick Taylor Denny Darrell A. Worthy Christopher G. Beevers W. Todd Maddox 《Cognitive, affective & behavioral neuroscience》2014,14(2):729-741
Depression is often characterized by attentional biases toward negative items and away from positive items, which likely affects reward and punishment processing. Recent work has reported that training attention away from negative stimuli reduced this bias and reduced depressive symptoms. However, the effect of attention training on subsequent learning has yet to be explored. In the present study, participants were required to learn to maximize reward during decision making. Undergraduates with elevated self-reported depressive symptoms received attention training toward positive stimuli prior to performing the decision-making task (n = 20; active training). The active-training group was compared to two other groups: undergraduates with elevated self-reported depressive symptoms who received placebo training (n = 22; placebo training) and a control group with low levels of depressive symptoms (n = 33; nondepressive control). The placebo-training depressive group performed worse and switched between options more than did the nondepressive controls on the reward maximization task. However, depressives that received active training performed as well as the nondepressive controls. Computational modeling indicated that the placebo-trained group learned more from negative than from positive prediction errors, leading to more frequent switching. The nondepressive control and active-training depressive groups showed similar learning from positive and negative prediction errors, leading to less-frequent switching and better performance. Our results indicate that individuals with elevated depressive symptoms are impaired at reward maximization, but that the deficit can be improved with attention training toward positive stimuli. 相似文献
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This article shows that measurement invariance (defined in terms of an invariant measurement model in different groups) is generally inconsistent with selection invariance (defined in terms of equal sensitivity and specificity across groups). In particular, when a unidimensional measurement instrument is used and group differences are present in the location but not in the variance of the latent distribution, sensitivity and positive predictive value will be higher in the group at the higher end of the latent dimension, whereas specificity and negative predictive value will be higher in the group at the lower end of the latent dimension. When latent variances are unequal, the differences in these quantities depend on the size of group differences in variances relative to the size of group differences in means. The effect originates as a special case of Simpson's paradox, which arises because the observed score distribution is collapsed into an accept-reject dichotomy. Simulations show the effect can be substantial in realistic situations. It is suggested that the effect may be partly responsible for overprediction in minority groups as typically found in empirical studies on differential academic performance. A methodological solution to the problem is suggested, and social policy implications are discussed. 相似文献
40.
Sanderson DJ Hindley E Smeaton E Denny N Taylor A Barkus C Sprengel R Seeburg PH Bannerman DM 《Learning & memory (Cold Spring Harbor, N.Y.)》2011,18(3):181-190
Deletion of the GluA1 AMPA receptor subunit impairs short-term spatial recognition memory. It has been suggested that short-term recognition depends upon memory caused by the recent presentation of a stimulus that is independent of contextual-retrieval processes. The aim of the present set of experiments was to test whether the role of GluA1 extends to nonspatial recognition memory. Wild-type and GluA1 knockout mice were tested on the standard object recognition task and a context-independent recognition task that required recency-dependent memory. In a first set of experiments it was found that GluA1 deletion failed to impair performance on either of the object recognition or recency-dependent tasks. However, GluA1 knockout mice displayed increased levels of exploration of the objects in both the sample and test phases compared to controls. In contrast, when the time that GluA1 knockout mice spent exploring the objects was yoked to control mice during the sample phase, it was found that GluA1 deletion now impaired performance on both the object recognition and the recency-dependent tasks. GluA1 deletion failed to impair performance on a context-dependent recognition task regardless of whether object exposure in knockout mice was yoked to controls or not. These results demonstrate that GluA1 is necessary for nonspatial as well as spatial recognition memory and plays an important role in recency-dependent memory processes. 相似文献