The Tacit–Explicit Connection: Polanyian Integrative Philosophy and a Neo-Polanyian Medical Epistemology

The purpose of this paper is to introduce an approach to clinical practice aiming to resolve the dilemma of choosing between a mechanistic and a phenomenological model. The approach is an extension of Polanyi's epistemology. Michael Polanyi (1891–1976), devised an epistemology of science which overcomes the problem of detachment, inherent in the mechanistic approach, and resolves the problem of subjectivity troubling phenomenologists. His epistemology is known as Personal Knowledge. An extension of this epistemology, a Neo-Polanyian proposal, is offered as a more successful model for clinical practice than previous suggestions addressing the dilemma.     

对FOK的线索熟悉性假说的重新检验

本研究的主要目标的,在于对ＦＯＫ的线索熟悉性假说进行重新检验。研究发现：如果采用１＊２设计而不是原来的１＊４设计并且增大处理间的对比力度的话,就可以观察到某些原来不能被观察到的关键性差异,而这些差异是ＦＯＫ的线索熟悉性假说不能解释的。     

Remarkable properties for diagnostics and inference of ranking data modelling

The Plackett-Luce model (PL) for ranked data assumes the forward order of the ranking process. This hypothesis postulates that the ranking process of the items is carried out by sequentially assigning the positions from the top (most liked) to the bottom (least liked) alternative. This assumption has been recently relaxed with the Extended Plackett-Luce model (EPL) through the introduction of the discrete reference order parameter, describing the rank attribution path. By starting from two formal properties of the EPL, the former related to the inverse ordering of the item probabilities at the first and last stage of the ranking process and the latter well-known as independence of irrelevant alternatives (or Luce's choice axiom), we derive novel diagnostic tools for testing the appropriateness of the EPL assumption as the actual sampling distribution of the observed rankings. These diagnostic tools can help uncovering possible idiosyncratic paths in the sequential choice process. Besides contributing to fill the gap of goodness-of-fit methods for the family of multistage models, we also show how one of the two statistics can be conveniently exploited to construct a heuristic method, that surrogates the maximum likelihood approach for inferring the underlying reference order parameter. The relative performance of the proposals, compared with more conventional approaches, is illustrated by means of extensive simulation studies.     

The effects of scenario-based risk information on perceptions of susceptibility to Chlamydia and HIV

Abstract

Objectives: The Self-Report Habit Index (SRHI) was originally reported as one-dimensional; however, habit has been described as characterised by several features. Moreover, one-dimensional models for the SRHI have demonstrated poor fit. Therefore, we aimed to compare multidimensional models with a one-dimensional model in both snacking and physical activity habits, besides examining further instrument characteristics.

Design: A cross-sectional study was conducted with high school and university students (n?=?555).

Main outcome measure: The SRHI adapted for physical activity and for snaking habits was applied at one time point.

Results: Nested models with one factor, two factors and three factors were compared. Next, a hierarchical second-order model was tested, and further validity issues, as well as invariance between habits, were examined. Three-dimensional models represented a better fit for both habits. However, fit was still inadequate in the snacking version. In addition, discriminant validity concerns emerged for the physical activity SRHI. Moreover, invariance between the snacking and the physical activity versions was not confirmed.

Conclusions: Considering the SRHI as composed by the dimensions of ‘lack of awareness’, ‘lack of control’ and ‘history of behavioural repetition’ seems to be more accurate. Nevertheless, our findings suggest that further research is needed.     

选择多多益善?——选择集大小对消费者多样化寻求的影响

一系列实验发现消费者多样化寻求行为随选择集增大而呈现倒U型变化,这是由于过大选择集情况下消费者倾向于采取启发式信息处理策略导致多样化寻求行为降低。同时,个体的认知需求水平调节选择集大小与多样化寻求行为间的倒U型关系。此外,通过操纵个体认知困难,理论机制进一步得到验证:在认知困难条件下,消费者也会因采用启发式信息处理策略而导致多样化寻求行为显著降低。     

THE CONCEPT OF DIGNITY IN THE UNIVERSAL DECLARATION OF HUMAN RIGHTS

This essay examines the function of the concept of human dignity (both as an inherent feature of human existence and as an ideal achievement) in the United Nations's 1948 Universal Declaration of Human Rights. It explains why the key framers of the document affirmed an inherent human dignity in order to provide an explanatory basis for the validity of universal human rights while eschewing any religious or metaphysical justification for this affirmation. It argues that the key framers, while aware of the Christian anthropology informing the modern Western concept of the dignity of the person, grasped (1) that the Declaration, to be ratifiable, would need to be free of religious reference, and also (2) that the notion of inherency suffices to suggest heuristically not only a universal human nature but also, crucially, a transcendent reality in which all persons participate.     

《物种起源》中的类比方法及其论证作用

达尔文在《物种起源》中区分了自然选择学说包括的两种不同的原理：适应原理和性状分歧原理。他对类比方法的应用也有两种：一是类比论证,二是发现的启发法。关于适应原理的类比只起到了启发法的作用,达尔文对这种类比的理解是假说一演绎主义的;关于性状分歧原理的类比是一种归纳推理,达尔文对这种类比的理解是归纳主义的。     

Eye-tracking the cancellation and focus model for preference judgments

By means of a relatively new eye-tracking method that allows for a test situation much closer to reality, we recorded and examined gaze time and fixation number within the cancellation and focus paradigm, a feature-matching model for preference judgments between two alternatives. In line with the cancellation and focus model we found that when subjects encountered the second option in each pair, shared features were canceled out and thus given less consideration whereas unique features were focused on more. We also investigated the role of feature attractiveness as a second important factor in preference judgments and found a U-shaped relationship between attractiveness and visual consideration intensity; that is, attractive and unattractive features received more attention than did those of intermediate attractiveness. Finally, we tested the ability of two models, Franklin’s rule and the WReSt (Weighted Recalled Stepwise Comparing) heuristic, to predict the preference ratings.     

Intuitive prediction: ecological validity versus representativeness

Insufficiently regressive intuitive predictions have been attributed to mistaken reliance on the representativeness heuristic. In contrast, we suggest that intuitive predictions stem from a conceptualization of ‘goodness of prediction’ that differs from the accepted statistical definition in terms of error minimization, namely, ecological validity—that is, representation of the substantive characteristics of the predicted variable Y and its distribution as well as of the relationship between Y and the predictor X—rather than minimization of prediction errors. Simultaneous satisfaction of the above representation requirements is achieved by multivalued prediction: The prediction of different Y′ values for the same X value, resulting in conditional distributions Y′|X for at least some X values. Empirical results supporting this hypothesis are presented and discussed. Copyright © 2008 John Wiley & Sons, Ltd.