Testing the speech unit hypothesis with the primed matching task: Phoneme categories are perceptually basic

The basic speech unit (phoneme or syllable) problem was investigatedwith the primed matching task. In primed matching, subjects have to decide whether the elements of stimulus pairs are the same or different. The prime should facilitate matching in as far as its representation is similar to the stimuli to be matched. If stimulus representations generate graded structure, with stimulus instances being more or less prototypical for the category, priming should interact with prototypicality because prototypical instances are more similar to the activated category than are low-prototypical instances. Rosch (1975a, 1975b) showed that, by varying the matching criterion (matching for physical identity or for belonging to the same category), the specific patterns of the priming × prototypicality interaction could differentiate perceptually based from abstract categories. Bytesting this pattern forphoneme and syllable categories, the abstraction level of these categories canbe studied. After finding reliable prototypicality effects for both phoneme and syllable categories (Experiments 1 and 2), primed phoneme matching (Experiments 3 and 4) and primed syllable matching (Experiments 5 and 6) were used under both physical identity instructions and same-category instructions. The results make clear that phoneme categories are represented on the basis of perceptual information, whereas syllable representations are more abstract. The phoneme category can thus be identified as the basic speech unit. Implications for phoneme and syllable representation are discussed.     

What Is ‘Real’ in Probabilism?

This paper defends two related claims about belief: first, the claim that, unlike numerical degrees of belief, comparative beliefs are primitive and psychologically real; and, second, the claim that the fundamental norm of Probabilism is not that numerical degrees of belief should satisfy the probability axioms, but rather that comparative beliefs should satisfy certain constraints.     

Is risk aversion irrational? Examining the “fallacy” of large numbers

Synthese - A moderately risk averse person may turn down a 50/50 gamble that either results in her winning $200 or losing $100. Such behaviour seems rational if, for instance, the pain of losing...     

A Christian Cancellation of the Secularist Truce? Waning Christian Religiosity and Waxing Religious Deprivatization in the West

Analysis of International Social Survey Program (ISSP) data collected in 18 Western countries in 1998 demonstrates that Christian desires for a public role of religion are strongest in countries where Christian religiosity is numerically most marginal. Moreover, Dutch data covering the period 1970–1996 confirm that the decline of the number of Christians in the Netherlands has been coincided by a strengthening of the call for public religion among the remaining faithful and by increased polarization about this with the nonreligious. Religious decline and religious privatization, two of the most crucial dimensions of secularization ( Casanova 1994 ), hence develop dialectically: as the number of Christians declines, the remaining faithful seem increasingly unwilling to accept the “secularist truce”—the secularist contract that guarantees religious freedom yet bans religion from the public sphere by relegating it to the private realm.     

Validity of self-report and informant rating scales of adult ADHD symptoms in comparison with a semistructured diagnostic interview

In a study of ADHD symptoms in the relatives of probands diagnosed with ADHD, the validity of self-reported and informant-reported symptoms in childhood and adulthood was investigated with a semistructured diagnostic interview, the Schedule for Affective Disorders and Schizophrenia for School-Age Children (K-SADS) adapted for adults, as a criterion. The participating relatives were 80 women and 46 men aged 17 to 77. Rating scales based on the Diagnostic and Statistical Manual of Mental Disorders (4th ed.) were completed by participants and informants. Internal consistency of the scales and interrater reliabilities of the diagnostic interview were satisfactory. Correlations between ratings across sources of information supported convergent and divergent validity. Self-report scales and informant scales predicted interview-based diagnoses in childhood and adulthood with adequate sensitivities and specificities. It was concluded that the rating scales have good psychometric properties, at least in at-risk populations.     

A Lewisian Trilemma

According to one reading of the thesis of Humean Supervenience, most famously defended by David Lewis, certain ‘fundamental’ (non‐modal) facts entail all there is but do not supervene on less fundamental facts. However, in this paper I prove that it follows from Lewis' possible world semantics for counterfactuals, in particular his Centring condition, that all non‐modal facts supervene on counterfactuals. Humeans could respond to this result by either giving up Centring or abandoning the idea that the most fundamental facts do not supervene on less fundamental facts. I argue that either response should in general be acceptable to Humeans: the first since there is nothing particularly Humean about Centring; the latter since Humeans should, independently of the result I present, be sceptical that the supervenience of one fact upon another by itself says anything about ‘fundamentality’. ¹      

Timing the moment of impact in fast human movements

The reported resolution of timing the moment of impact in fast human movements differs widely depending on the task. Surprisingly, better timing is reported for the demanding task of batting a ball than for the much simpler task of tapping in synchrony with two hands. We wondered whether this is because a sizeable part of timing variability arises from misjudging the distance in the direction of one's own movement, so that moving faster (as the bat does when moving toward a ball) improves timing. We found that moving faster does indeed improve timing in both the above-mentioned tasks. After removing the proposed contribution of misjudging the distance in the direction of one's own movement, we estimated that the remaining standard deviation in timing is just over 6ms for both tasks.     

Match-fixing: Moral challenges for those involved

ABSTRACT

Match-fixing is a major ethical issue in sports. Although research interest in match-fixing has increased in recent years, we remain largely in the dark regarding how both betting- and non-betting-related match-fixing relate to the moral decision-making of those involved. Drawing on Rest’s theory of morality and on the perceptions of a large sample (n = 567) of participants in Flemish sports, this study indicates that most match-fixing incidents are non-betting-related, while moral motivation and associated challenges clearly differ according to the type of match-fixing. Therefore, each type of match-fixing requires different preventive measures.     

Gambling with Death

Topoi - Orthodox expected utility theory imposes too stringent restrictions on what attitudes to risk one can rationally hold. Focusing on a life-and-death gamble, I identify as the main culprit...