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101.
From segregation to intergroup contact and back: Using experiments and simulation to understand the bidirectional link 下载免费PDF全文
Elmar Schlueter Johannes Ullrich Andreas Glenz Peter Schmidt 《European journal of social psychology》2018,48(1):17-32
Research on intergroup contact has mostly viewed desegregation as a necessary condition for contact to unfold its power to reduce prejudice. Through residential and school choices, however, prejudice also contributes to segregation. To shed light on this bidirectional link, we conducted two survey‐based experiments with stratified quota samples of German adults. In Study 1, respondents with less contact and more prejudice indicated a lower likelihood of renting an apartment in a neighborhood with a larger proportion of minority members, although housing quality and crime rate were held constant. In Study 2, similar results were obtained for the likelihood of enrolling their child at a school with a larger proportion of minority students. Building on these results in a computer simulation, we find that because contact only reduces prejudice, but does not produce pro‐minority preferences, spontaneous desegregation is unlikely to occur even under the most favorable structural and economic conditions. 相似文献
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Nathaniel E. Helwig 《The British journal of mathematical and statistical psychology》2022,75(2):319-333
Fleishman's power method is frequently used to simulate non-normal data with a desired skewness and kurtosis. Fleishman's method requires solving a system of nonlinear equations to find the third-order polynomial weights that transform a standard normal variable into a non-normal variable with desired moments. Most users of the power method seem unaware that Fleishman's equations have multiple solutions for typical combinations of skewness and kurtosis. Furthermore, researchers lack a simple method for exploring the multiple solutions of Fleishman's equations, so most applications only consider a single solution. In this paper, we propose novel methods for finding all real-valued solutions of Fleishman's equations. Additionally, we characterize the solutions in terms of differences in higher order moments. Our theoretical analysis of the power method reveals that there typically exists two solutions of Fleishman's equations that have noteworthy differences in higher order moments. Using simulated examples, we demonstrate that these differences can have remarkable effects on the shape of the non-normal distribution, as well as the sampling distributions of statistics calculated from the data. Some considerations for choosing a solution are discussed, and some recommendations for improved reporting standards are provided. 相似文献
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The current study assessed the predictive validity of simulations to improve the military selection system. Four navy simulations were developed and their predictive validity was measured. The performance of 1007 Israeli navy soldiers was measured in a longitudinal study, which was carried on for almost two years. Participants’ performance in four simulations (naval-navigation test, raft sailing, rubber boat [zodiac] mounting, and military tent assembly) was measured and used as a behavioral predictor for their performance at the end of their first year of active military service on combat ships. All but the raft sailing simulation predicted participants’ performance. 相似文献
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Jonathan Borgvall 《Military psychology》2013,25(3):244-251
Incorporated in a simulator design project, this study assessed the utility of a simulator prototype for air combat training to optimize continued development. After several scenarios, the 13 male participants completed a survey. Seven fidelity levels: visual feedback, head-up/head-down, instrumentation, flight controls, graphics, visual resolution, and field-of-view were rated for three dimensions: realism, limitation of performance, and importance of realism. The results informed decisions about which fidelity levels, head-up/head-down and field-of-view, that should be prioritized during the next design cycle, and generated recommendations for continued simulator design and directives for further evaluations. 相似文献
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Eva Troyb Michael Rosenthal Inge-Marie Eigsti Elizabeth Kelley Katherine Tyson Alyssa Orinstein 《Child neuropsychology》2013,19(4):378-397
Executive functioning (EF) is examined among children and adolescents once diagnosed with an autism spectrum disorder (ASD), but who no longer meet diagnostic criteria. These individuals have average social and language skills, receive minimal school support and are considered to have achieved “optimal outcomes” (OOs). Since residual impairments in these individuals might be expected in deficits central to autism, and in developmentally advanced skills, EF was examined in 34 individuals who achieved OOs, 43 individuals with high-functioning autism (HFA), and 34 typically developing (TD) peers. Groups were matched on age (M = 13.49), gender, and nonverbal IQ (NVIQ) but differed on verbal IQ (VIQ; HFA < TD, OO). On direct assessment, all three groups demonstrated average EF; however, the OO and HFA groups exhibited more impulsivity and less efficient planning and problem-solving than the TD group, and more HFA participants exhibited below average inhibition than did OO and TD participants. Parent-report measures revealed average EF among the OO and TD groups; however, the OO group exhibited more difficulty than the TD group on set-shifting and working memory. HFA participants demonstrated more difficulty on all parent-reported EF domains, with a clinical impairment in attention-shifting. Results suggest that EF in OO appears to be within the average range, even for functions that were impaired among individuals with HFA. Despite their average performance, however, the OO and TD groups differed on measures of impulsivity, set-shifting, problem-solving, working memory, and planning, suggesting that the OO group does not have the above-average EF scores of the TD group despite their high-average IQs. 相似文献
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J.J. Wang S. Bhattacharyya Q. Li T.W. Heo X.Q. Ma Long-Qing Chen 《Philosophical Magazine Letters》2013,93(7):327-335
An efficient numerical algorithm is proposed to accurately compute the elastic fields in two-dimensional (2D) or three-dimensional (3D) microstructures with arbitrary elastic inhomogeneity and anisotropy. It combines the equivalent inclusion method of Eshelby, the microelasticity theory of Khachaturyan, and the spectral iterative perturbation method of Hu and Chen. Its efficiency is compared with those of existing approaches in the literature. The method can be conveniently implemented in phase-field modeling of stress-dependent microstructure evolution and/or of mass/electrical transport. 相似文献
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