Using relational structure to detect symmetry: a Voronoi tessellation based model of symmetry perception

Numerous models of symmetry perception have been proposed in recent years. Unfortunately, it is difficult to assess the relative utility of these models as little effort has been made to directly compare them. This paper outlines a new model of symmetry perception based upon the relational structure revealed by Voronoi tessellation. The model has been developed in response to evidence suggesting that the human visual system is generating a Voronoi-like representation at an early stage in processing. Bayesian model selection is employed to compare the performance of the Voronoi model to that of five previously published models across six empirical datasets. The results indicate that the Voronoi model provides a more likely account of the data than the five alternative models.     

CONTEMPORARY MUFTIS BETWEEN BIOETHICS AND SOCIAL REALITY

Selecting the sex of a fetus has been a desire of parents in many different cultures. Modern Muslim religious scholars have identified advantages and disadvantages of this practice, permitting it in certain cases while forbidding it in others. In general, they do not appear to desire that selection of sex become a common practice, yet they are willing to allow it for personal reasons. This case‐by‐case approach exemplifies a key aspect of Muslim ethical discourse. After an overview of justifications for fetal sex selection in different cultures, I turn to a discussion of authoritative Islamic sources. I then analyze the reasoning of several modern authorities who deal with the issue. In the absence of a clear religious text on the subject, scholars seem inclined to legitimize sex selection, and in so doing they appear strongly influenced by social attitudes.     

Selection of Variables in Cluster Analysis: An Empirical Comparison of Eight Procedures

Eight different variable selection techniques for model-based and non-model-based clustering are evaluated across a wide range of cluster structures. It is shown that several methods have difficulties when non-informative variables (i.e., random noise) are included in the model. Furthermore, the distribution of the random noise greatly impacts the performance of nearly all of the variable selection procedures. Overall, a variable selection technique based on a variance-to-range weighting procedure coupled with the largest decreases in within-cluster sums of squares error performed the best. On the other hand, variable selection methods used in conjunction with finite mixture models performed the worst.     

THE EVOLUTIONARY BASIS OF RELIGIOUS ETHICS

Abstract. I propose that religious ethical traditions can be understood as cultural expressions of underlying evolutionary processes. I begin with a discussion of evolutionary theories of morality, specifically kin selection and reciprocal altruism, and then discuss some recent work on the evolution of religion, setting out those features of religion that prepare it to take on a moral function in society. Having established the theoretical framework for the thesis, I turn to a close reading of early Jewish and Christian ethical teachings, as found in the Bible, in order to set out preliminary support for the proposal. My goal is to argue for the plausibility of the thesis and to indicate how, if correct, it provides new insight into Judeo‐Christian moral traditions and into the phenomenon of religious violence. Such an approach to religious ethics has important metaethical implications. In the last section I consider issues such as the foundation of ethics and the possibilities and limitations of a secular ethics.     

Perceived fairness in employee selection: the role of applicant personality

The present study investigated the role of applicant personality in relation to applicant procedural and distributive justice perceptions after being informed of an organization’s reject/accept selection decision. A sample of 503 students completed a selection test, believing the results would be used to make initial selection decisions for an organization recruiting from the university. Participants were presented with selection decisions (randomly assigned) two weeks later, and procedural and distributive justice perceptions were assessed. Hierarchical regression analyses indicated that agreeableness, openness to experience, and test-taking self-efficacy were positively related with perceptions of procedural and distributive justice. Neuroticism was negatively associated with distributive justice perceptions. The relationships of test-taking self-efficacy with procedural and distributive justice were moderated by the organization’s selection decision.     

模拟员工招聘过程中的有意遗忘效应

以隐私信息和非隐私信息为目标信息,以66名大学生为被试,采用类似字表范式,探讨了模拟员工招聘过程中三种提示条件下的有意遗忘效应。结果发现:①在模拟员工招聘过程中,有意遗忘效应显著,不同的提示会影响决策的结果;②简历上的与工作无关的个人隐私信息对招聘者的决策过程有一定的消极影响;③一定的干预手段可以部分消除个人隐私信息对聘用决策的消极影响,但不能完全消除。     

Productivity is not enough: A comparison of interactive and nominal brainstorming groups on idea generation and selection

The conclusion that nominal brainstorming groups outperform interactive brainstorming groups has been exclusively based on studies of idea generation. This study tested whether the productivity advantage of nominal groups would also result in better idea selection. Nominal and interactive groups performed a task that involved idea generation and selection. Idea generation and selection were strictly separated for half the groups, but were combined for the other half. Nominal groups generated more ideas than interactive groups, and the ideas generated by nominal groups were more original and less feasible than the ideas generated by interactive groups. However, there were no differences among conditions in quality of the selected ideas. Further, idea selection was not significantly better than chance. This suggests that high productivity in brainstorming is not sufficient to lead to better solutions.     

言语产生过程中语义、语音激活的ERP研究

使用ERP技术考察了言语产生过程中语音和语义的激活情况。图片上有3种条件的干扰词,分别与目标图片名称形成3种关系:语义相关,语音相同,语义、语音、字形都不相关。结果显示,当被试执行延迟命名任务(实验1)时,与目标图片名称语义相关和控制条件的波形比语音相关的波形更趋于负向。说明在图片命名过程中语音有明显的促进作用。当要求被试对上述图片进行延迟语义判断任务(实验2)时,与目标图片名称语义相关、语音相关及控制条件的波形之间无明显差异。说明在语义提取过程中没有语音的促进作用。综合实验1和实验2,本研究的结果更倾向于支持独立两阶段模型。