A growing body of empirical evidence suggests that folk knowledge attribution practices regarding some epistemological thought experiments differ significantly from the consensus found in the philosophical literature. More specifically, laypersons are likely to ascribe knowledge in the so-called Authentic Evidence Gettier-style cases, while most philosophers deny knowledge in these cases. The intuitions shared by philosophers are often used as evidence in favor (or against) certain philosophical analyses of the notion of knowledge. However, the fact that these intuitions are not universal, (...) as non-philosophers do not sympathize with verdicts made by philosophers, is problematic and requires some explanation. Recently, a promising theoretical approach emerged that could be used to explain away unexpected folk knowledge attributions. According to the protagonist projection hypothesis, when subjects answer questions about some hypothetical scenario, their judgments might result from adopting the cognitive perspective of the protagonist in the given scenario. Previous experimental findings suggest protagonist projection might be responsible for problematic knowledge attributions in Gettier-style cases. This paper reports data collected in an experiment which focused on five different Authentic Evidence Gettier-style scenarios and investigated the impact of protagonist projection on folk knowledge ascriptions in such cases. The results bring some support to the protagonist projection hypothesis, but do not allow to explain away a substantial number of problematic folk knowledge attributions. (shrink)

According to the No-Luck-Thesis knowledge possession is incompatible with luck – one cannot know that p if the truth of one’s belief that p is a matter of luck. Recently, this widespread opinion was challenged by Peter Baumann, who argues that in certain situations agents do possess knowledge even though their beliefs are true by luck. This paper aims at providing empirical data for evaluating Baumann’s hypothesis. The experiment was designed to compare non-philosophers’ judgments concerning knowledge and luck in one (...) case that Baumann takes to be in favor of his claim and other cases where, according to him, absence of knowledge coincides with luck. The results show that the cases do not differ in a significant way between each other with respect to verdicts regarding knowledge and luck. In all cases subjects were more reluctant to judge that the ‘Gettierized’ belief is knowledge and more likely to judge that it is true by luck in comparison to a belief that is an uncontroversial instance of knowledge. However, the negative relationship between knowledge and luck ascriptions predicted by the No-Luck-Thesis was almost absent. The data raise some doubts about the No-Luck-Thesis, but the reasons for doubt are different than what Baumann expected. (shrink)

According to contextualism, vast majority of natural-language expressions are context-sensitive. When testing whether this claim is reflected in Folk intuitions, some interesting methodological questions were raised such as: which experimental design is more appropriate for testing contextualism – the within- or the between-subject design? The main thesis of this paper is that the between-subject design should be preferred. The first experiment aims at assessing the difference between the results obtained for within-subjects measurements (where all participants assess all contexts) and between-subject (...) measurements (where respondents evaluating different contexts are distinct groups). It is shown that the within-subject design provides data that seems to support contextualism. However, I present an alternative, invariantist interpretation of these results, therefore showing that the within-subject design does not allow to empirically distinguish between contextualism and invariantism. The second experiment further elaborates the issue of how perceiving the contrast between contexts can affect subjects’ judgments – I show that certain kinds of contexts may elicit opposite intuitions when contrasted with different contexts. (shrink)

Recent experimental work has shown that the truth-value judgments of color predications, i.e. utterances of the form “the leaves on my tree are green” or “these walls are brown,” are influenced by slight changes in the context of utterance (Hansen and Chemla 2013, Ziółkowski, 2021). Most explanations of this phenomenon focus on the semantics of color adjectives. However, it is not clear if these explanations do justice to the nuances of the empirical data on context-sensitivity of color predications (Ziółkowski, 2021). (...) In contrast to the adjectival explanations, Agustin Vicente (2015) has recently proposed that the context-sensitivity of color predications can be explained by invoking the polysemy of the noun. In this paper, we present the results of three studies designed to empirically test this hypothesis: a traditional survey experiment (Study 1), an exploratory correlational study inspired by the semantic integration paradigm (Study 2a), and a follow-up experiment (Study 2b) that was designed to mitigate possible shortcomings of Study 2a. The results of our studies present preliminary evidence against Vicente’s theory. (shrink)