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391.
Xinru Li Elise Dusseldorp Jacqueline J. Meulman 《The British journal of mathematical and statistical psychology》2017,70(1):118-136
In the framework of meta‐analysis, moderator analysis is usually performed only univariately. When several study characteristics are available that may account for treatment effect, standard meta‐regression has difficulties in identifying interactions between them. To overcome this problem, meta‐CART has been proposed: an approach that applies classification and regression trees (CART) to identify interactions, and then subgroup meta‐analysis to test the significance of moderator effects. The previous version of meta‐CART has its shortcomings: when applying CART, the sample sizes of studies are not taken into account, and the effect sizes are dichotomized around the median value. Therefore, this article proposes new meta‐CART extensions, weighting study effect sizes by their accuracy, and using a regression tree to avoid dichotomization. In addition, new pruning rules are proposed. The performance of all versions of meta‐CART was evaluated via a Monte Carlo simulation study. The simulation results revealed that meta‐regression trees with random‐effects weights and a 0.5‐standard‐error pruning rule perform best. The required sample size for meta‐CART to achieve satisfactory performance depends on the number of study characteristics, the magnitude of the interactions, and the residual heterogeneity. 相似文献
392.
393.
Susana Silva Vasiliki Folia Peter Hagoort Karl Magnus Petersson 《Cognitive Science》2017,41(1):137-157
The suitability of the artificial grammar learning (AGL) paradigm to capture relevant aspects of the acquisition of linguistic structures has been empirically tested in a number of EEG studies. Some have shown a syntax‐related P600 component, but it has not been ruled out that the AGL P600 effect is a response to surface features (e.g., subsequence familiarity) rather than the underlying syntax structure. Therefore, in this study, we controlled for the surface characteristics of the test sequences (associative chunk strength) and recorded the EEG before (baseline preference classification) and after (preference and grammaticality classification) exposure to a grammar. After exposure, a typical, centroparietal P600 effect was elicited by grammatical violations and not by unfamiliar subsequences, suggesting that the AGL P600 effect signals a response to structural irregularities. Moreover, preference and grammaticality classification showed a qualitatively similar ERP profile, strengthening the idea that the implicit structural mere‐exposure paradigm in combination with preference classification is a suitable alternative to the traditional grammaticality classification test. 相似文献
394.
Visualising mental representations: A primer on noise-based reverse correlation in social psychology
With the introduction of the psychophysical method of reverse correlation, a holy grail of social psychology appears to be within reach – visualising mental representations. Reverse correlation is a data-driven method that yields visual proxies of mental representations, based on judgements of randomly varying stimuli. This review is a primer to an influential reverse correlation approach in which stimuli vary by applying random noise to the pixels of images. Our review suggests that the technique is an invaluable tool in the investigation of social perception (e.g., in the perception of race, gender and personality traits), with ample potential applications. However, it is unclear how these visual proxies are best interpreted. Building on advances in cognitive neuroscience, we suggest that these proxies are visual reflections of the internal representations that determine how social stimuli are perceived. In addition, we provide a tutorial on how to perform reverse correlation experiments using R. 相似文献
395.
行为抑制是一种重要的执行功能。考察情绪影响行为抑制的脑机制, 将有助于理解个体如何适应环境, 特别是如何在情绪情境中控制自己的行为。近年来, 研究者开始使用脑成像技术考察情绪影响行为抑制的脑机制。研究发现, 在情绪影响行为抑制的过程中不仅涉及前额叶抑制控制系统和边缘结构情绪加工系统, 而且涉及这两个系统的相互作用, 即情绪加工与行为抑制加工的整合。腹外侧前额皮层、背外侧前额皮层、前扣带回、杏仁核、脑岛等脑区在情绪加工与行为抑制加工的整合中起着重要的作用, 但情绪整合到行为抑制加工中的时间进程还不清楚。今后的研究应着眼于情绪影响行为抑制的时间进程、神经网络、个体差异的影响以及改进研究范式等方向。 相似文献
396.
Josée Poirier Lewis P. Shapiro Tracy Love Yosef Grodzinsky 《Journal of psycholinguistic research》2009,38(3):237-253
We investigate the on-line processing of verb-phrase ellipsis (VPE) constructions in two brain injured populations: Broca’s
and Anomic aphasics. VPE constructions are built from two simple clauses; the first is the antecedent clause and the second
is the ellipsis clause. The ellipsis clause is missing its verb and object (i.e., its verb phrase (VP)), which receives its
reference from the fully specified VP in the antecedent clause. VPE constructions are unlike other sentence types that require
displacement of an argument NP; these latter constructions (e.g., object-relatives, wh-questions) yield either on-time or
delayed antecedent reactivation. Our results demonstrate that Anomics, like unimpaired individuals, evince reactivation of
the direct object NP (within the VP) at the elided position. Broca’s patients, on the other hand, do not show reactivation
of the antecedent. We consider several interpretations for our data, including explanations focusing on the larger ‘grain
size’ of the reconstructed material in the ellipsis clause, the properties of the auxiliary that carries tense and agreement
features, and the possibility that the cost-free syntactic copy procedure claimed to underlie VPE may be modulated by the
functional deficit in Broca’s aphasia. 相似文献
397.
Ronaldo Vigo 《Journal of mathematical psychology》2009,53(4):203-4859
An alternative account of human concept learning based on an invariance measure of the categorical stimulus is proposed. The categorical invariance model (CIM) characterizes the degree of structural complexity of a Boolean category as a function of its inherent degree of invariance and its cardinality or size. To do this we introduce a mathematical framework based on the notion of a Boolean differential operator on Boolean categories that generates the degrees of invariance (i.e., logical manifold) of the category in respect to its dimensions. Using this framework, we propose that the structural complexity of a Boolean category is indirectly proportional to its degree of categorical invariance and directly proportional to its cardinality or size. Consequently, complexity and invariance notions are formally unified to account for concept learning difficulty. Beyond developing the above unifying mathematical framework, the CIM is significant in that: (1) it precisely predicts the key learning difficulty ordering of the SHJ [Shepard, R. N., Hovland, C. L., & Jenkins, H. M. (1961). Learning and memorization of classifications. Psychological Monographs: General and Applied, 75(13), 1-42] Boolean category types consisting of three binary dimensions and four positive examples; (2) it is, in general, a good quantitative predictor of the degree of learning difficulty of a large class of categories (in particular, the 41 category types studied by Feldman [Feldman, J. (2000). Minimization of Boolean complexity in human concept learning. Nature, 407, 630-633]); (3) it is, in general, a good quantitative predictor of parity effects for this large class of categories; (4) it does all of the above without free parameters; and (5) it is cognitively plausible (e.g., cognitively tractable). 相似文献
398.
MARIO APARICIO ELISABETH DEMONT DANIEL GOUNOT MARIE-NOËLLE METZ-LUTZ 《Scandinavian journal of psychology》2009,50(5):445-455
Most people born deaf and exposed to oral language show scant evidence of sensitivity to the phonology of speech when processing written language. In this respect they differ from hearing people. However, occasionally, a prelingually deaf person can achieve good processing of written language in terms of phonological sensitivity and awareness, and in this respect appears exceptional. We report the pattern of event-related fMRI activation in such a deaf reader while performing a rhyme-judgment on written words with similar spelling endings that do not provide rhyme clues. The left inferior frontal gyrus pars opercularis and the left inferior parietal lobe showed greater activation for this task than for a letter-string identity matching task. This participant was special in this regard, showing significantly greater activation in these regions than a group of hearing participants with a similar level of phonological and reading skill. In addition, SR showed activation in the left mid-fusiform gyrus; a region which did not show task-specific activation in the other respondents. The pattern of activation in this exceptional deaf reader was also unique compared with three deaf readers who showed limited phonological processing. We discuss the possibility that this pattern of activation may be critical in relation to phonological decoding of the written word in good deaf readers whose phonological reading skills are indistinguishable from those of hearing readers. 相似文献
399.
本文主要讨论了不同时期逻辑学家对逻辑谬误研究的特点。古希腊时期对谬误作出全面系统研究的是亚里士多德。亚里士多德对谬误的解决方法一般地说是经验的,没有形成一套行之有效的规则。文艺复兴时期,培根等人批判经院哲学,探讨了人类产生谬误的根源。这时期的谬误研究特点是:一是重视在归纳法的应用中产生的谬误;二是突出逻辑问题。现代逻辑学家如柯比等人则在前人的基础上,对谬误作出了更全面、更精确的分类,并且对各种谬误的解释和举例也更确切,从而使谬误理论更好地为实践服务。 相似文献
400.
V. Choulakian 《Psychometrika》2008,73(2):309-319
The aim of this paper is to study the analysis of contingency tables with one heavyweight column or one heavyweight entry
by taxicab correspondence analysis (TCA). Given that the mathematics of TCA is simpler than the mathematics of correspondence
analysis (CA), the influence of one heavyweight column on the outputs of TCA is studied explicitly without recourse to asymptotics
as done by Benzécri (Les Cahiers de L’Analyse des Données 4:413–16, 1979). A reweighting of the heavyweight column is proposed, which can also be applied to CA. A real data set is analyzed.
This research is financed by NSERC of Canada. The author is grateful to the Editor, Professor B. Junker, to an Associate Editor
and to three referees for their constructive comments. 相似文献