Removing Inconsistencies in Assumption-based Theories Through Knowledge-Gathering Actions

In this paper, the problem of purifying an assumption-based theory KB, i.e., identifying the right extension of KB using knowledge-gathering actions (tests), is addressed. Assumptions are just normal defaults without prerequisite. Each assumption represents all the information conveyed by an agent, and every agent is associated with a (possibly empty) set of tests. Through the execution of tests, the epistemic status of assumptions can change from "plausible" to "certainly true", "certainly false" or "irrelevant", and the KB must be revised so as to incorporate such a change. Because removing all the extensions of an assumption-based theory except one enables both identifying a larger set of plausible pieces of information and renders inference computationally easier, we are specifically interested in finding out sets of tests allowing to purify a KB (whatever their outcomes). We address this problem especially from the point of view of computational complexity.     

Children's creation of algorithms: simulations and gestures

Experiments showed that children are able to create algorithms, that is, sequences of operations that solve problems, and that their gestures help them to do so. The theory of mental models, which is implemented in a computer program, postulates that the creation of algorithms depends on mental simulations that unfold in time. Gestures are outward signs of moves and they help the process. We tested 10-year-old children, because they can plan, and because they gesture more than adults. They were able to rearrange the order of 6 cars in a train (using a siding), and the difficulty of the task depended on the number of moves in minimal solutions (Experiment 1). They were also able to devise informal algorithms to rearrange the order of cars when they were not allowed to move the cars, and the difficulty of the task depended on the complexity of the algorithms (Experiment 2). When children were prevented from gesturing as they formulated algorithms, the accuracy of their algorithms declined by13% (Experiment 3). We discuss the implications of these results.     

Reasoning about rights and duties: mental models,world knowledge and pragmatic interpretation

We address the way verb-based and rule-content knowledge are combined in understanding institutional deontics. Study 1 showed that the institutional regulations used in our studies were readily categorised into one of two content groups: rights or duties. Participants perceived rights as benefiting the addressees identified by the rule, whereas they perceived duties as benefiting the collective that imposed the rule. Studies 2, 3, and 4 showed that rule content (rights vs. duties) had clear effects on perceptions of violations and relevance of cases for explaining the rule, even when controlling for deontic verb, phrasing of the action permitted by a right, or the formality of the deontic verb. These effects are incompatible with a simple pragmatic disambiguation approach to pragmatic modulation, as they often induce permissibility judgments that contradict the core semantic meanings of the deontic verbs. Other ways of reconciling verb meaning with rule content should be considered in a fuller theory of the interpretation of institutional rules.     

Some Syntactic Approaches to the Handling of Inconsistent Knowledge Bases: A Comparative Study Part 1: The Flat Case

This paper presents and discusses several methods for reasoning from inconsistent knowledge bases. A so-called argued consequence relation, taking into account the existence of consistent arguments in favour of a conclusion and the absence of consistent arguments in favour of its contrary, is particularly investigated. Flat knowledge bases, i.e., without any priority between their elements, are studied under different inconsistency-tolerant consequence relations, namely the so-called argumentative, free, universal, existential, cardinality-based, and paraconsistent consequence relations. The syntax-sensitivity of these consequence relations is studied. A companion paper is devoted to the case where priorities exist between the pieces of information in the knowledge base.     

Inferential basing and mental models

In this paper, I flesh out an account of the inferential basing relation using a theory about how humans reason: the mental models theory. I critically assess some of the notions that are used by that theory to account for inferential phenomena. To the extent that the mental models theory is well confirmed, that account of basing would be motivated on empirical grounds. This work illustrates how epistemologists could offer explications of the basing relation which are more detailed and less empirically risky.     

Inconsistencies in the Reporting of Perceived Trauma Severity Among Acute Physical Injury Survivors

This study aimed to identify and predict inconsistency in perceived trauma severity reports over time among trauma survivors. Hospitalized adult survivors of a traumatic injury completed trauma exposure assessments within 40 days post-injury and 6 weeks later (n = 77). The following trauma severity characteristics were examined: (1) threat of loss of life, (2) threat of loss of a body part, (3) threat of serious injury, and (4) peritraumatic emotionality. Potential predictors of inconsistency were also examined. About half of the reports regarding perceived trauma severity characteristics were inconsistent between the baseline to 6-week assessment. The inconsistent reports were mostly small and equally likely to be either more or less severe over time. Increases in posttraumatic stress disorder (PTSD; especially avoidance) predicted increases in severity of life threat and threat of loss of a body part. Thus, acute reports of perceived trauma severity vary and are influenced by PTSD symptoms.     

Consistency Orientation and Models of Social Behavior: Is It Not Time for West to Meet East

The study examined the cultural differences in inconsistency-reducing behaviors by testing the reactions of 110 Japanese and 169 American college students to the inconsistencies arising from a difference of opinion with a significant other on ego-involving issues. It was predicted that (1) the Japanese sample would show more inconsistency support than will an American sample; (2) The American sample will show more preference for active inconsistency-reducing responses than will the Japanese sample; (3) on the hypothesis that contemporary social psychology's models of humans is based upon the American stereotype of the "typical American," the first two predictions will be more strongly confirmed by comparing the American subjects' stereotype of the "typical American" than by comparing their own reported choices. The findings generally supported the first two predictions and strongly supported the third one.     

Relational and Contextual Reasoning: Philosophical and Logical Aspects

This essay is a commentary on Helmut Reich's recently published book on relational and contextual reasoning (RCR). Reich's ideas are relevant in contexts of conflict, and they enable us to consider the notion of objectivity differently. He makes us see the constraints in individual perspectives. His book also can enable people to formulate problems of human concern in a wider and richer framework, which may lead to solutions not obtainable on the basis of binary logic.     

Logical reasoning in schizotypal personality

It was examined whether psychotic-like personality traits in a sample of 205 college students could predict logical reasoning deficits, akin to those seen in schizophrenia. The participants were tested on their ability to assess the logical validity of premises (Logical Reasoning Task), and completed a multi-dimensional schizotypy inventory (O-LIFE). Low accuracy was associated with increased levels of disorganized schizotypy (‘Cognitive Disorganization’), while elevated errors were associated with increased levels of positive (‘Unusual Experiences’), negative (‘Introvertive Anhedonia’) and impulsive (‘Impulsivity Non-conformity’) schizotypy. Nevertheless, multiple regression analyses revealed that negative schizotypy was retained as the only significant predictor after performance was corrected for random guessing, and the contribution of the average amount of time spent on each premise was controlled. The results suggest that, although most schizotypy dimensions have a detrimental effect on reasoning performance, possibly due to disadvantageous test-taking strategies, negative schizotypy is the most reliable predictor of logical reasoning deficits. It is proposed that social/interpersonal schizotypal traits, like negative symptoms of schizophrenia, are accompanied by deficient executive functions of working memory, which appear to undermine, inter alia, logical reasoning processing.     

Optimal Predictions in Everyday Cognition: The Wisdom of Individuals or Crowds?

Griffiths and Tenenbaum (2006) asked individuals to make predictions about the duration or extent of everyday events (e.g., cake baking times), and reported that predictions were optimal, employing Bayesian inference based on veridical prior distributions. Although the predictions conformed strikingly to statistics of the world, they reflect averages over many individuals. On the conjecture that the accuracy of the group response is chiefly a consequence of aggregating across individuals, we constructed simple, heuristic approximations to the Bayesian model premised on the hypothesis that individuals have access merely to a sample of k instances drawn from the relevant distribution. The accuracy of the group response reported by Griffiths and Tenenbaum could be accounted for by supposing that individuals each utilize only two instances. Moreover, the variability of the group data is more consistent with this small-sample hypothesis than with the hypothesis that people utilize veridical or nearly veridical representations of the underlying prior distributions. Our analyses lead to a qualitatively different view of how individuals reason from past experience than the view espoused by Griffiths and Tenenbaum.     

The Mental Model Theory of Conditionals: A Reply to Guy Politzer

This paper replies to Politzer’s (2007) criticisms of the mental model theory of conditionals. It argues that the theory provides a correct account of negation of conditionals, that it does not provide a truth-functional account of their meaning, though it predicts that certain interpretations of conditionals yield acceptable versions of the ‘paradoxes’ of material implication, and that it postulates three main strategies for estimating the probabilities of conditionals.     

The Challenge of Amoralism

According to unconditional motivational internalism, there is an a priori constraint on an agent's forming a sincere moral judgement, namely that she is, at least to some minimal extent, motivated to act as it dictates. In order to undermine this internalist position, proponents of motivational externalism typically appeal to the possibility of the amoralist—i.e. an individual who makes sincere moral judgements, but who is completely unmoved to act accordingly. This strategy is known as the challenge of amoralism. Against this strategy, I will argue that in order to represent a genuine case of amoralism, and a credible counterexample to unconditional motivational internalism, an agent would have to simultaneously satisfy an epistemically inconsistent set of conditions. Thus, the conclusion I will attempt to defend in this paper is that the challenge of amoralism does not succeed in posing a legitimate threat to unconditional motivational internalism.     

共享心智模型研究现状

共享心智模型是指团队成员共同拥有的知识结构,它使得团队成员能就团队作业形成正确的解释和预期,从而协调自己的行为以适应于团队作业和其他团队成员的需求。其研究为理解和提高团队绩效提供了新的视角,从而成为了团队研究的新热点。该文首先明确其定义以及相关概念,再介绍它的几种类型,进而介绍研究中采用的测量方法,最后总结其影响因素及对团队绩效的影响。文章最后指出研究中存在的问题以及今后的研究方向。     

Together We Rise: How Social Movements Succeed

Social movements, such as Black Lives Matter, surge when support grows for their social justice goals. At their core, social movements advance when people act collectively by rising in solidarity with a shared purpose to address injustice and inequality. Drawing on insights from consumer psychology, this review investigates how social movements succeed in creating social change. We build on an established 21^st‐century framework for how social movements succeed to outline the promising practices of successful social movements. For each of these practices, we identify the consumer psychology mechanisms that motivate collective action and encourage people to transform from bystanders to upstanders, those who provide the grassroots momentum for successful social movements. We illustrate this framework with examples from the growth of the Black Lives Matter movement. Finally, we highlight insights from consumer psychology that promote an understanding of social movements, and we raise research questions to encourage more consumer psychologists to investigate how social movements succeed.     

工作记忆成分在传递性推理中的作用

采用双任务(dual-task)实验范式,探讨工作记忆成分在五项系列问题(five-term task)这种传递性推理中的作用。被试为80名大学生,实验材料为32个空间和时间内容的传递性推理题目。结果发现:(1)空间位置和时间关系的推理结果都支持心理模型理论,而不支持形式规则理论。(2)在推理前提的加工阶段,中央执行系统和视空间模板发挥着关键作用,语音环路没有参与;而在结论的推理阶段,工作记忆的三个成分均发挥了作用。(3)传递性推理在工作记忆系统中采用视空间编码进行表征。     

Variables for designing cube folding tasks influencing sixth-graders' performance

This study investigated whether the three variables of task form, squares carried, and figural complexity, for designing cube folding tasks, affect sixth graders' cube folding performance. Two task forms were used to develop two versions of “cube folding test.” Each version was designed based on two levels of squares carried and three levels of figural complexity, and contained 18 multiple-choice items. The sample included 107 boys and 92 girls with an average age of 12.04 years who were randomly assigned to complete one of the two versions. A linear mixed model was carried out with three factors: task forms, squares carried, and figural complexity, in which squares carried and figural complexity were “within-subjects” factors, and task form was the “between-subjects” factor. The results showed the interaction effect of squares carried and task form, and the main effect of figural complexity, which differentiated the difficulty in cube folding tasks.