On Modal Logics Characterized by Models with Relative Accessibility Relations: Part II

This work is divided in two papers (Part I and Part II). In Part I, we introduced the class of Rare-logics for which the set of terms indexing the modal operators are hierarchized in two levels: the set of Boolean terms and the set of terms built upon the set of Boolean terms. By investigating different algebraic properties satisfied by the models of the Rare-logics, reductions for decidability were established by faithfully translating the Rare-logics into more standard modal logics (some of them contain the universal modal operator).In Part II, we push forward the results from Part I. For Rare-logics with nominals (present at the level of formulae and at the level of modal expressions), we show that the constructions from Part I can be extended although it is technically more involved. We also characterize a class of standard modal logics for which the universal modal operator can be eliminated as far as satifiability is concerned. Although the previous results have a semantic flavour, we are also able to define proof systems for Rare-logics from existing proof systems for the corresponding standard modal logics. Last, but not least, decidability results for Rare-logics are established uniformly, in particular for information logics derived from rough set theory.Since this paper is the continuation of Part I, we do not recall here the definitions of Part I although we refer to them.     

On the evaluation and application of different scales for quantifying pairwise comparisons in fuzzy sets

One of the most critical issues in many applications of fuzzy sets is the successful evaluation of membership values. A method based on pairwise comparisons provides an interesting way of evaluating membership values. That method was proposed by Saaty, almost 20 years ago, and since then has captured the interest of many researchers around the world. However, recent investigations reveal that the original scale may cause severe inconsistencies in many decision-making problems. Furthermore, exponential scales seem to be more natural for humans to use in many decision-making problems. In this paper two evaluative criteria are used to examine a total of 78 scales which can be derived from two widely used scales. The findings in this paper reveal that there is no single scale that can outperform all the other scales. Furthermore, the same findings indicate that a few scales are very efficient under certain conditions. Therefore, for a successful application of a pairwise-comparison-based method the appropriate scale needs to be selected and applied.     

The anatomy of antagonistic coregulation: Emergent coordination,path dependency,and the interplay of biomechanic parameters in Aikido

Using a video-supported cognitive ethnographic and phenomenological approach, we address the interactively generated dynamic of bouts in Aikido. This “soft” martial art enables a defender to blend with and then redirect an attacker’s aggressive energy so as to break his balance, while preserving an ethos of non-violence, mutuality, and respect. Our analysis explores the skills used to minutely adapt to the opponent, the causal-temporal structure of Aikido, notably the cumulative effect build-up and main decision points in a bout, as well as the perceptual cues from inter-body geometry, timing, and force dynamics that inform decisions. We then contrast different interaction scenarios by focusing on micro-events that shape defensive preferences. For a successful defense, technical modulations or even the preferred technique itself can be selected as the interaction unfolds (“decision-making-in-action”). For a closer look, we analyze the interplay of multiple parameters: flexibility of intention (i.e. early deciding vs. keeping options openlonger), technique (i.e. type of lever or throw), initial body symmetry, step combinations, spacing and timing relative to the attacker, degree of force, as well as possible skill differentials. We describe complex interdependencies between these parameters, which can be balanced in various ways as agents respond to the interaction dynamic.     

A decision model for steady-state choice in concurrent chains

Grace and McLean (2006) proposed a decision model for acquisition of choice in concurrent chains which assumes that after reinforcement in a terminal link, subjects make a discrimination whether the preceding reinforcer delay was short or long relative to a criterion. Their model was subsequently extended by Christensen and Grace (2008, 2009a, 2009b) to include effects of initial- and terminal-link duration on choice. We show that an expression for steady-state responding can be derived from the decision model, which enables a model for choice that provides an account of archival data that is equal or superior to the contextual choice model (Grace, 1994) and hyperbolic value-added model (Mazur, 2001) in terms of goodness of fit, parsimony, and parameter invariance. The success of the steady-state decision model validates the strategy of understanding acquisition phenomena as a bridge toward explaining choice at the molar level.     

情绪和任务框架对自我和预期他人决策时风险偏好的影响

两个实验考察了情绪和任务框架对自我和预期他人决策时风险偏好的影响。结果表明:(1)获益框架下,悲伤情绪比愉悦情绪诱发更强的风险偏好,自我决策比预期他人决策表现出更强的风险偏好;(2)损失框架下,愉悦情绪比悲伤情绪诱发更强的风险偏好,预期他人决策比自我决策表现出更强的风险偏好;(3)在自我决策时,愉悦情绪在损失框架下比在获益框架下诱发了更强的风险偏好,悲伤情绪在获益框架下比在损失框架下诱发了更强的风险偏好;在预期他人决策时,无论是愉悦情绪还是悲伤情绪,损失框架均比获益框架诱发了更强的风险偏好。     

Goal attainment as a resource: The cushion effect in risky choice above a goal

Goals are a ubiquitous part of life and have been shown to change behavior in many domains. This research studied the influence of goal attainment on risky choice behavior. Previous research has shown that goals tend to increase risk‐seeking behavior when potential outcomes fall below a goal. We examined a new problem: Choice behavior when all potential outcomes in a choice set achieve or exceed the goal. Two studies show a “cushion effect” of goal attainment on choice under risk. When all possible outcomes of all options are above a salient and specific goal, decision makers are more likely to choose a risky option over a certain outcome with equal expected value (EV). We hypothesized that the attainment of a goal serves as a cushion that softens the negative emotions associated with receiving a gamble's low outcome. This allows risk taking that would otherwise be unattractive. Copyright © 2009 John Wiley & Sons, Ltd.     

Evaluating advisors: A policy‐capturing study under conditions of complete and missing information

Decision‐makers' relative preferences for various advisor characteristics were investigated in two multilevel policy‐capturing studies. The characteristics under consideration were: advisor expertise, advisor confidence, advisor intentions, and whether that advisor was the sole available source of advice. In Study 1, decision‐makers had access to all relevant information about the advisors. In contrast, some relevant information about the advisors was systematically made unavailable in Study 2, which allowed an investigation of the effect of missing information on decision‐makers' evaluations of advisors. Results from both studies indicated that advisor expertise and intentions were most important in promoting decision‐makers' positive evaluations of advisors, that this effect was even more pronounced under conditions of missing information, and that advisor expertise and intentions also interacted synergistically. Given that expertise and good intentions are determinants of an advisor's trustworthiness, the results highlight the interpersonal nature of advice giving and taking. Copyright © 2009 John Wiley & Sons, Ltd.     

Assessing the merits and faults of holistic and disaggregated judgments

Three studies explored both the advantages of and subjects' preferences for a disaggregated judgment procedure and a holistic one. The task in our first two studies consisted of evaluating colleges; the third study asked participants to evaluate job applicants. Holistic ratings consisted of providing an overall evaluation while considering all of the characteristics of the evaluation objects; disaggregated ratings consisted of evaluating each cue independently. Participants also made paired comparisons of the evaluation objects. We constructed preference orders for the disaggregated method by aggregating these ratings (unweighted or weighted characteristics). To compare the holistic, disaggregated, and weighted‐disaggregated method we regressed the four cues on the participant's holistic rating, on the linearly aggregated disaggregated ratings, and on the average weighted disaggregated rating, using the participant's “importance points” for each cue as weights. Both types of combined disaggregated ratings related more closely to the cues in terms of proportion of variance accounted for in Experiments 1 and 2. In addition, the disaggregated ratings were more closely related to the paired‐comparison orderings, but Experiment 2 showed that this was true for a small set (10) but not a large set (60) of evaluation objects. Experiment 3 tested the “gamesmanship” hypothesis: People prefer holistic ratings because it is easier to incorporate illegitimate but appealing criteria into one's judgment. The results suggested that the disaggregated procedure generally produced sharper distinctions between the most relevant and least relevant cues. Participants in all three of these studies preferred the holistic ratings despite their statistical inferiority. Copyright © 2009 John Wiley & Sons, Ltd.     

风险决策价值函数的数学公式

本文提出风险决策价值函数的一个数学公式,定量描述决策者对价值的主观感受与收益及损失之间的关系。     

Developmental relationships and managerial promotability in organizations: A multisource study

Managers are now focusing on developmental relationships by providing career-related mentoring to their direct reports, but research is lacking in showing whether such mentoring is in fact related to outcomes that benefit the manager. This study investigates whether self- and direct report ratings of the extent to which focal-managers provide career-related mentoring are associated with perceptions of their promotability as perceived by their bosses (n = 1623) and peers (n = 1597). Results of hierarchical regression indicated that both self- and direct report ratings of focal-managers' career-related mentoring were significant and positively related to boss and peer ratings of focal-managers' promotability. Within a self-other rating agreement framework, results of polynomial regression indicated that higher ratings of career-related mentoring by focal-managers and their direct reports were positively related to both boss and peer ratings of focal-managers' promotability. Furthermore, underrating (i.e., when self-ratings are lower than direct report ratings) was more positively related to promotability than overrating (i.e., when self-ratings are higher than direct report ratings).