Possibility and probability

Conclusion De Finetti was a strong proponent of allowing 0 credal probabilities to be assigned to serious possibilities. I have sought to show that (pace Shimony) strict coherence can be obeyed provided that its scope of applicability is restricted to partitions into states generated by finitely many ultimate payoffs. When countable additivity is obeyed, a restricted version of ISC can be applied to partitions generated by countably many ultimate payoffs. Once this is appreciated, perhaps the compelling character of the Shimony argument will be less overwhelming and the attractiveness of de Finetti's more permissive attitude will become more apparent.I want to push the permissive tendency in de Finetti still further. It seems doubtful that RUIWC should be required as de Finetti apparently suggested. It is also excessively dogmatic and restrictive to require that the credal states of ideally situated rational agents be numerically definite (Levi 1974, 1980). And de Finetti's rejection of objectivism in statistics overreached itself when he dismissed objective probabilities as meaningless metaphysical artefacts (Levi 1986). In this respect, the philosophically most important lessons de Finetti has to teach us are to be found not in his celebrated representation theorem but in his discussions of the relations between 0-probability and possibility, conditional probability and countable additivity. Perhaps, the technical issues involved are remote and pedantic. But the attitude de Finetti sought to inculcate is of profound importance.Thanks are due to Teddy Seidenfeld whose comments have improved this paper substantially. He is not to blame for its lingering defects.     

Analysis of four measures of positional bias within a multiple stimulus without replacement preference assessment

Positional bias is a pattern of responding to a specific location that can be influenced by response effort and/or prior learning history. Prior research on positional bias within stimulus preference assessments have focused primarily on its use in paired stimulus assessments due to the complex nature of the multiple stimulus without replacement (MSWO) preference assessment. The present study is a secondary data analysis that utilized four different methods to measure side and center bias in a MSWO preference assessment for 19 young children with autism spectrum disorder. Participants displayed varying degrees of biased responding but collectively engaged in minimal biased responding. This study includes an analysis of the four methodologies, discussion of general patterns of responding, and general recommendations for the application of these methodologies in future research.     

Language as a Global Public Good

Language use is a public good. Those using a common language receive benefits that are non-excludable and non-rival. And as more people speak the same language, the greater these benefits are. Sometimes individuals make a conscious decision to learn a language other than their native language in order to receive these benefits, and thereby incur costs. This paper is an attempt to determine how we should share the costs among all beneficiaries. I argue against Van Parijs’s (Linguistic justice for Europe and for the world, Oxford University Press, Oxford, 2011a) proposal for this, and instead argue that an approach found in the work of Gauthier (Morals by agreement, Oxford University Press, Oxford, 1986) is preferable. A general lesson to be drawn from this paper is that the correct principle for distributing the costs of (global) public goods will depend on whether we think the good in question is required by justice or not. Where Van Parijs went wrong, I claim, was in thinking that a cross-border common language is required by justice.     

“Putting One Foot in Front of the Other”: A Qualitative Study of Emotional Experiences and Help-Seeking in Women with Multiple Sclerosis

Treatments for depression and anxiety in multiple sclerosis (MS) are effective but evidence suggests that individuals do not always seek help for emotional difficulties. This study explored how ten women with MS (aged 30–64), recruited via a hospital based MS clinic, coped with and understood their emotions. The semi-structured interviews were analysed using interpretative phenomenological analysis. Eight participants discussed the analytic process and themes. Four overarching themes emerged: Disclosure stress, Uncomfortable dependence, Facing deterioration and One step at a time. The women struggled emotionally with many aspects of living with MS yet coping alone provided a way of defying MS and maintaining independence and control. The women needed emotional support but reported thinking others either did not notice or understand; their emotions often felt invisible. More holistic care from services was desired. Non help-seeking for distress was partially influenced by a desire to keep things “normal” and a lack of knowledge regarding service provision.