价格框架对不同认知闭合需要者在线动态价格的感知与购买意愿的影响*

采用问卷与实验相结合的方法,以112名大学生为被试,考察价格框架对不同认知闭合需要者在线购物时对动态定价策略下的价格感知与购买意愿的影响。结果发现：（1）相比非动态价格,动态价格条件下消费者感知价格公平感、购买意愿都较低;（2）在打折框架下,高认知闭合需要者对采取动态价格在线购物网站的感知信任显著好于非动态价格,而低认知闭合需要者则相反,说明消费者的价格感知受这三个变量的综合影响;（3）在降价框架下,认知闭合需要与动态价格的交互作用不显著,意味着在线消费者的购买意愿可能受到更多其它因素制约。     

On Kripke’s Dogmatism Paradox: A Logical Dynamical Analysis

As a byproduct of solving the surprise-exam paradox, Saul Kripke formulates a “dogmatism paradox” which seems to show that knowledge entails dogmatism. In this paper, the author analyzes the nature of the dogmatism paradox from a logical dynamical perspective. The author suggests that the dogmatism paradox is better understood as a paradox of knowledge attribution rather than of knowledge. Therefore, the dogmatism paradox could be solved without sacrificing the principle of epistemic closure. Based on a famous version of relevant alternatives theory, the author formalizes a logic of knowledge attribution in the style of logical dynamics, namely, public retraction logic, and analyzes how knowledge attributions are retracted with the expansion of relevant alternatives.     

Competing roles for the subfactors of need for closure in committing the fundamental attribution error

Webster’s (1993) finding that the need for closure (NFC) trait predicts the fundamental attribution error (FAE) is well-cited but has mixed support. After detailing failed replications and contradictory findings, this article reports an attempt to verify the positive NFC–FAE relation using the questioner–contestant paradigm. Rarely investigated but potentially vital to the field, this research also considered the two orthogonal subfactors of NFC, decisiveness and need for structure (Neuberg, Judice, & West, 1997). Results showed that need for structure predicted, overall NFC partially predicted, but decisiveness attenuated the FAE. Thus, Webster’s finding was both replicated and reversed by different aspects of NFC. Decisiveness adds to a short list of trait moderators of the FAE. Implications are discussed for how to measure NFC.     

Addicted to answers: Need for cognitive closure and the endorsement of conspiracy beliefs

Conspiracy theories offer simple answers to complex problems by providing explanations for uncertain situations. Thus, they should be attractive to individuals who are intolerant of uncertainty and seek cognitive closure. We hypothesized that need for cognitive closure (NFCC) should foster conspiracy beliefs about events that lack clear official explanations, especially when conspiracy theories are temporarily salient. In Experiment 1, NFCC positively predicted the endorsement of a conspiracy theory behind the refugee crisis, especially when conspiratorial explanations were made salient. Experiment 2 showed that when conspiratorial explanations were made salient, NFCC positively predicted beliefs in conspiracies behind a mysterious plane crash. However, the link between NFCC and beliefs in conspiratorial explanations was reversed in the case of a plane crash with an official, non‐conspiratorial, explanation for the accident. In conclusion, people high (vs. low) in NFCC seize on conspiratorial explanations for uncertain events when such explanations are situationally accessible.     

The Non-Conceptual Dimension of Social Mediation: Toward a Materialist Aufhebung of Hegel

ABSTRACT

Sellars’s relationship with Hegel is complex and itself ‘dialectical‘ in interesting ways. Sellars follows Hegel in recognizing that the normativity essential to intentionality and conceptuality is a social phenomenon. But Sellars criticizes Hegel for his inability to independently explain the emergence and function of this essential group phenomenon. I shall argue that Sellars’s critique of Hegel on this count is part of a larger, metaphysically ambitious and rigorously realistic position, which, though turning Hegel’s ontology on its head, shares with Hegel the methodological ambition of arriving at a position which is globally explanatorily closed. Further, it will be suggested that although Sellars would surely have been critical of the ontological reification of Hegel’s dialectical method, he nonetheless reserves an important role for conceptual dialectical development right at the heart of his system, namely in his understanding of the conceptual evolution that leads from the manifest to the scientific image. Finally, I shall argue that Sellars thereby aspires to provide nothing less than a materialist aufhebung of idealist Hegelian dialectics.     

Rules for Reasoning from Knowledge and Lack of Knowledge

In this paper, the traditional view that argumentum ad ignorantiam is a logical fallacy is challenged, and lessons are drawn on how to model inferences drawn from knowledge in combination with ones drawn from lack of knowledge. Five defeasible rules for evaluating knowledge-based arguments that apply to inferences drawn under conditions of lack of knowledge are formulated. They are the veridicality rule, the consistency of knowledge rule, the closure of knowledge rule, the rule of refutation and the rule for argument from ignorance. The basic thesis of the paper is that knowledge-based arguments, including the argument from ignorance, need to be evaluated by criteria for epistemic closure and other evidential rules that are pragmatic in nature, that need to be formulated and applied differently at different stages of an investigation or discussion. The paper helps us to understand practical criteria that should be used to evaluate all arguments based on knowledge and/or ignorance.

Meaning and Conversational Impropriety in Sceptical Contexts

According to “disjunctivist neo‐Mooreanism”—a position Duncan Pritchard develops in a recent book—it is possible to know the denials of radical sceptical hypotheses, even though it is conversationally inappropriate to claim such knowledge. In a recent paper, on the other hand, Pritchard expounds an “überhinge” strategy, according to which one cannot know the denials of sceptical hypotheses, as “hinge propositions” are necessarily groundless. The present article argues that neither strategy is entirely successful. For if a proposition can be known, it can also be claimed to be known. If the latter is not possible, this is not because certain propositions are either “intrinsically” conversationally inappropriate (as Pritchard claims in his book) or else “rationally groundless” (as Pritchard claims in his paper), but rather that we are dealing with something that merely presents us with the appearance of being an epistemic claim.     

Shaping reality vs. hiding from reality: Reconsidering the effects of trait need for closure on information search

For tentative and final decisions on real and artificial issues, three studies revealed a positive relation between trait need for closure and selective approach to supportive (vs. unsupportive) information. Specifically, individuals with high (vs. low) trait need for closure selected more decision-supportive information and less decision-challenging information for viewing. Furthermore, Study 1 showed that the effect of trait need for closure functioned independently of authoritarianism and dogmatism, and Study 3 showed that the effect of trait need for closure on selective approach to decision-supportive information was mediated by a current concern to get closure on the experimental issue. These findings provide a new understanding of how trait need for closure shapes post-decisional information search and decision making.     

A review of definitions of fatigue – And a step towards a whole definition

Despite its importance to health and safety, there is a long history of disagreement about how to operationalize fatigue when studying exertion in human transport operators. The current article reviews existing definitions, and consequently proposes a new definition as a step forward. A consideration of everyday use of the term finds that people often seem to use fatigue to describe a sensation related to exertion. Formal definitions of fatigue can be divided into a few broad definitions, capturing experiential, physiological and performance aspects of the construct, and many narrow definitions, focusing only on one or two of these aspects. Most existing definitions do not account explicitly for the role of sleep drives and sleepiness. They also fail to account for a wide range of factors associated with transport operator exertion, such as motivation and individual, organizational and environmental factors. Each of these points is assimilated in the derivation of a new “whole definition” of fatigue, in which the experience of human operator fatigue is a central aspect of the fatigue process. Although multidimensional and diffuse, the evolved definition does not detract from the measurement and study of limited aspects of fatigue. Rather, by describing the dynamic complexity of fatigue, it may help make explicit what different studies do or do not measure or account for in terms of the different aspects of fatigue. It is claimed that the proposed definition could be used to help harmonise attempts to study and tackle fatigue in transport health and safety contexts.