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151.
Leo K. C. Cheung 《Philosophia》2013,41(1):159-170
In this paper, I consider a popular version of the clever student’s reasoning in the surprise examination case, and demonstrate that a valid argument can be constructed. The valid argument is a reductio ad absurdum with the proposition that the student knows on the morning of the first day that the teacher’s announcement is fulfilled as its reductio. But it would not give rise to any paradox. In the process, I criticize Saul Kripke’s solution and Timothy Williamson’s attack on a key step of the student’s reasoning. I then consider the condemned prisoner case in W. V. Quine’s paper ‘On a So-Called Paradox’. I argue that the prisoner’s reasoning as conceived by Quine is more relevant and reasonable than the student’s argument in the popular version of the surprise examination case. I also argue that Quine’s criticism of the prisoner’s reasoning is correct, and therefore that the condemned prisoner case, and the surprise examination case as well, would not generate any paradox. 相似文献
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Ian M. Lyons Gavin R. Price Anniek Vaessen Leo Blomert Daniel Ansari 《Developmental science》2014,17(5):714-726
Math relies on mastery and integration of a wide range of simpler numerical processes and concepts. Recent work has identified several numerical competencies that predict variation in math ability. We examined the unique relations between eight basic numerical skills and early arithmetic ability in a large sample (N = 1391) of children across grades 1–6. In grades 1–2, children's ability to judge the relative magnitude of numerical symbols was most predictive of early arithmetic skills. The unique contribution of children's ability to assess ordinality in numerical symbols steadily increased across grades, overtaking all other predictors by grade 6. We found no evidence that children's ability to judge the relative magnitude of approximate, nonsymbolic numbers was uniquely predictive of arithmetic ability at any grade. Overall, symbolic number processing was more predictive of arithmetic ability than nonsymbolic number processing, though the relative importance of symbolic number ability appears to shift from cardinal to ordinal processing. 相似文献
154.
Leo K. C. Cheung 《Philosophical Investigations》2014,37(4):350-362
In this paper, I argue that the restricted claim in §43a of the Philosophical Investigations is that, for a large class of cases of word meanings, the meaning of a word is its use in the language. Although Wittgenstein does not provide any example of words having uses but no meaning as exceptions to the claim, he does hint at exceptions, which are names being defined, or explained, ostensively by pointing to their bearers, in §43b. Names in ostensive definitions, or explanations, are meaningful, but not being used, and are therefore exceptions to the claim that meaning is use. 相似文献
155.
JoNell Strough Leo Schlosnagle Tara Karns Philip Lemaster Nipat Pichayayothin 《决策行为杂志》2014,27(1):78-94
In three studies, we examined the influence of restricted and expansive temporal horizons on the sunk‐cost fallacy. The sunk‐cost fallacy occurs when prior investments instead of future returns influence decisions about future investments. When making decisions about future investments, rational decision makers base decisions on future consequences, not already‐invested costs that are “sunk” and cannot be recovered. In Study 1, we restricted young adult college students' temporal horizons by instructing them to imagine that they did not have much longer to live; this manipulation decreased the sunk‐cost fallacy. In Study 2, we replicated Study 1 and also found that the consequences of manipulating temporal horizons were most pronounced for prior investments of time and that prior investments of time and money had different implications for the sunk‐cost fallacy, depending on the social or nonsocial decision domain. In Study 3, we manipulated temporal horizons by instructing students to imagine their time as a college student was coming to an end. Results were mostly similar to Study 2 but also suggested that focusing on one's mortality may have unique consequences. Implications of the three studies for understanding age differences in sunk‐cost decisions, interventions to improve sunk‐cost decisions, and the situations in which interventions might be most needed are discussed. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
156.
Closing the Gap in Aboriginal and Torres Strait Islander Youth Suicide: A Social–Emotional Wellbeing Service Innovation Project 下载免费PDF全文
Delaney Michael Skerrett Mandy Gibson Leilani Darwin Suzie Lewis Rahm Rallah Diego De Leo 《Australian psychologist》2018,53(1):13-22
Objective
The suicide rate for Queensland's Aboriginal and Torres Strait Islander young people is over four times that of their non‐Indigenous counterparts, with Aboriginal and Torres Strait Islander children (under 15) dying by suicide at 12 times the non‐Indigenous rate. There is a need for interventions that are culturally validated and community‐endorsed. The aim of this article is to describe the design and implementation of a group‐based intervention, as well to report the results of the various qualitative and quantitative measures.Method
Sixty‐one Aboriginal and Torres Strait Islander persons aged 11–21 years completed a social–emotional wellbeing (SEWB) program at headspace Inala. Data were available through to 2‐month follow‐up for 49 participants. The program was designed and delivered in collaboration with the local Aboriginal and Torres Strait Islander community.Results
There was a statistically significant decrease in suicidal ideation experienced by the participants after completing the program. Qualitative measures indicated that participants experienced improved understanding of holistic health and an increased number of coping skills.Conclusions
Not only was this the first evaluated intervention in Aboriginal and Torres Strait Islander youth to ever report a decrease in individual suicidality, the program was carefully designed and implemented in consultation with community in a culturally sensitive manner and thus provides an invaluable framework for future SEWB work. 相似文献157.
Leo M. J. de Sonneville Elske Hidding Herman van Engeland Jacob A. S. Vorstman Monique E. J. Sijmens-Morcus Hanna Swaab 《Child neuropsychology》2018,24(1):1-19
Children with 22q11.2 deletion syndrome (22q11DS; velo-cardio-facial-syndrome) are at risk for the developmental disorders, attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). In this study, the relation between executive functioning (EF) and the severity of ADHD and ASD symptoms is examined, since EF is known to be important in relation to emotional and behavioral problems. The participants consist of 58 children (38 females) with a mean age of 13.5 years (SD 2.6). Standardized assessment was used to evaluate the severity of ASD and ADHD symptomatology. The major aspects of EF, i.e., cognitive flexibility, inhibition, sustained attention, distractibility, working memory and reaction speed, were evaluated. The profile of EF in 22q11DS was found to be characterized by weaker performance compared to the norms on all subdomains of EF. Poor cognitive flexibility and inhibition, as well as high distractibility, were found to be related to more severe ASD symptoms, while poor quality of sustained attention and high distractibility were found to be related to more severe ADHD symptoms. It is concluded that children with 22q11DS experience impairments in EF, and that the degree of impairment on specific EF subdomains is related to the severity of ASD and/or ADHD symptomatology. These results may help in defining the mediating role of neurocognitive dysfunctions in the development of social and behavioral problems in 22q11DS. 相似文献
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