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Sunmee Kim Heungsun Hwang 《The British journal of mathematical and statistical psychology》2021,74(3):567-590
Extended redundancy analysis (ERA) is used to reduce multiple sets of predictors to a smaller number of components and examine the effects of these components on a response variable. In various social and behavioural studies, auxiliary covariates (e.g., gender, ethnicity) can often lead to heterogeneous subgroups of observations, each of which involves distinctive relationships between predictor and response variables. ERA is currently unable to consider such covariate-dependent heterogeneity to examine whether the model parameters vary across subgroups differentiated by covariates. To address this issue, we combine ERA with model-based recursive partitioning in a single framework. This combined method, MOB-ERA, aims to partition observations into heterogeneous subgroups recursively based on a set of covariates while fitting a specified ERA model to data. Upon the completion of the partitioning procedure, one can easily examine the difference in the estimated ERA parameters across covariate-dependent subgroups. Moreover, it produces a tree diagram that aids in visualizing a hierarchy of partitioning covariates, as well as interpreting their interactions. In the analysis of public data concerning nicotine dependence among US adults, the method uncovered heterogeneous subgroups characterized by several sociodemographic covariates, each of which yielded different directional relationships between three predictor sets and nicotine dependence. 相似文献
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Tara E. Santmire Sarit Kraus Toni E. Santmire Jonathan Wilkenfeld Kim M. Holley & Kristian S. Gleditsch 《Political psychology》1998,19(4):721-748
This paper reports on a series of experiments designed to assess the impact of grouping decision makers by level of cognitive complexity on the outcomes they attain in crisis negotiations. The participants—University of Maryland undergraduates who took roles in a simulated international hostage crisis—used a computer decision support system and a controlled network environment for communications. The goal of the experiments was to better understand the dynamics that lead certain types of groupings to have greater success in negotiations, and that lead certain groups of adversaries to achieve more mutually beneficial outcomes such as compromise and agreement. The findings point to a positive relationship between the level of homogeneity in cognitive complexity among decision makers and the achievement of positive outcomes in crisis negotiations. 相似文献
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To indicate motion in a static drawing, artists often include lines trailing a moving object. The use of these motion lines is notable because they do not seem to be related to anything in the optic array. The dynamic behavior of a neural-network model for contour detection is analyzed and it is shown that it generates trails of oriented responses behind moving stimuli. The properties of the oriented response trails are shown to correspond to motion lines. The model generates trails of different orientations depending on the speed and length of the movement, and thereby predicts different uses of two types of motion lines. The model further predicts that motion lines should bias real motion in some situations. An experiment relating motion lines to ambiguous motion percepts demonstrates that motion lines contribute to motion percepts. 相似文献
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This study examined the validity of situational view on culture‐specific behaviours focusing on self‐evaluation. Two experiments with American students as samples were conducted to examine whether priming their self‐construals would affect individuals' self‐evaluation. In Experiment 1, the participants' self‐evaluation was compared across different conditions of primed self‐contruals. In Experiment 2, the participants were split into 2 groups based on their initial default self‐consturals and, the self‐evaluations were compared across the 2 groups after priming self‐contruals. The results demonstrated that although the participants' self‐evaluation was initially in accord with their default self‐construal, it changed into accord with the primed self‐construals. The findings supported the proposed cultural game player view. Implications on situational view of self‐evaluation are also discussed. 相似文献