The Ehrenfest Fleas: From Model to Theory

A generalization of Ehrenfest's urn model is suggested. This will allow usto treat a wide class of stochastic processes describing the changes ofmicroscopic objects. These processes are homogeneous Markov chains. Thegeneralization proposed is presented as an abstract conditional (relative)probability theory. The probability axioms of such a theory and some simpleadditional conditions, yield both transition probabilities and equilibriumdistributions. The resulting theory interpreted in terms of particles andsingle-particle states, leads to the usual formulae of quantum and classicalstatistical mechanics; in terms of chromosomes and allelic types, it allowsthe deduction of many genetical models including the Ewens sampling formula;in terms of agents' strategies, it gives a justification of the ``herdbehaviour' typical of a population of heterogeneous economic agents.     

Attachment style,attachment to God,religiosity, and moral disengagement: a study on offenders

The present study investigates religiosity, moral disengagement, attachment to God, and interpersonal attachment in 30 offenders within Italian jails. We administered a semi-structured interview to collect data about family, social and medical history, and the manner in which the deviant act was carried out; the Moral Disengagement Scale; the Attachment to God Inventory; the Revised Intrinsic/Extrinsic Religious Orientation Scale; and the Attachment Style Questionnaire. Results show how intrinsic religiosity negatively predicts moral disengagement; the “Preoccupation with Relationships” Scale (anxious/ambivalent attachment) predicts avoidant attachment to God; and the “Secondariety for Relationship” Scale (dismissing attachment) predicts personal extrinsic religiosity and negatively predicts intrinsic religiosity. Studying these constructs in offenders is important not only to increase the literature but also to implement interventions aimed at reeducation focused on issues relevant to personal adjustment.     

Evidence on the Hierarchical,Multidimensional Nature of Behavioural Job Crafting

While to date job crafting has been conceptualised as consisting of behaviours aiming at seeking more resources, decreasing hindering demands, and seeking more challenges, recent research suggests that individuals may restore the fit between their demands and preferences also by optimising their demands. Accordingly, optimising demands has been introduced in the resource-based perspective to job crafting as an additional strategy that aims at making the work processes more efficient, simplifying procedures and eliminating obstacles. In this paper, we explore and provide evidence for the validity of a four-factor, hierarchical structure of behavioural job crafting constituted by increasing resources, seeking challenges, decreasing demands, and optimising demands. Moreover, our results provide initial evidence suggesting that overall job crafting may be more strongly characterised by effortful actions to expand the work characteristics rather than to reduce them.     

Do We Need Integrity in a Theory of Justice? A Critique of the ‘Argument from Integrity’ in Favour of Accommodations

A number of authors in recent liberal political theory have advanced an ‘argument from integrity’ in favour of legal accommodations. This holds that people are entitled to forms of legal accommodations every time they can plausibly claim that complying with a certain norm compromises their ability to act in accordance with some fundamental personal values. I advance two points against this argument. Valuing integrity unconditionally is implausible because a life devoid of integrity is one that does not prevent anyone from developing crucial liberal virtues. If integrity is valued conditionally, on the other hand, its normative role becomes redundant. In fact, I argue, the key liberal values of fairness and toleration can give a more plausible guidance with regard to the problem of how to treat (and sometimes accommodate) moral commitments that are incompatible with public norms. I conclude that the notion of personal integrity is, by itself, unnecessary and possibly detrimental in a theory of justice.     

What the Solitaire illusion tells us about perception of numerosity

In four experiments we investigated the Solitaire illusion. In this illusion, most observers see as more numerous a set of dots that forms a single central group, compared to dots on the outside of that group. We confirmed and extended the effect to configurations with much higher numerosity than the original and of various colours. Contrary to prediction, separating the two groups, so that they are presented side by side, reduced but did not abolish or reverse the illusion. In this illusion, therefore, neither total size of the region (area), not average distance of the elements has the expected effect. In Experiments 3 and 4 we eliminated the regularity of the pattern, by sampling 50% (Exp 3) or only a 10% (Exp 4) of the elements. These produces quasi-random configurations. For these configurations the bias for the inner groups was still present, and it was only eliminated when the groups were shown as separate. However, the effect never reversed (no bias for the outer group, despite its larger area). We conclude that the Solitaire illusion is evidence of a strong bias in favour of centrally located elements, a bias that can overcome other factors.