Q-LEARNING WITH CENSORED DATA

We develop methodology for a multistage-decision problem with flexible number of stages in which the rewards are survival times that are subject to censoring. We present a novel Q-learning algorithm that is adjusted for censored data and allows a flexible number of stages. We provide finite sample bounds on the generalization error of the policy learned by the algorithm, and show that when the optimal Q-function belongs to the approximation space, the expected survival time for policies obtained by the algorithm converges to that of the optimal policy. We simulate a multistage clinical trial with flexible number of stages and apply the proposed censored-Q-learning algorithm to find individualized treatment regimens. The methodology presented in this paper has implications in the design of personalized medicine trials in cancer and in other life-threatening diseases.     

Reliability of professional judgments in forensic child sexual abuse evaluations: unsettled or unsettling science?

In the absence of photographic or DNA evidence, a credible eyewitness, or perpetrator confession, forensic evaluators in cases of alleged child sexual abuse must rely on psychosocial or "soft" evidence, often requiring substantial professional judgment for case determination. This article offers a three-part rebuttal to Herman's (2009 ) argument that forensic decisions based on psychosocial evidence are fundamentally unreliable and that this conclusion represents settled science. The article also discusses the potentially adverse consequences of Herman's proposed reforms to forensic practice on child protection and prosecution efforts.     

Who by Accident? The Social Morphology of Car Accidents

Prior studies in the sociology of accidents have shown that different social groups have different rates of accident involvement. This study extends those studies by implementing Bourdieu's relational perspective of social space to systematically explore the homology between drivers’ social characteristics and their involvement in specific types of motor vehicle accident. Using a large database that merges official Israeli road‐accident records with socioeconomic data from two censuses, this research maps the social order of road accidents through multiple correspondence analysis. Extending prior studies, the results show that different social groups indeed tend to be involved in motor vehicle accidents of different types and severity. For example, we find that drivers from low socioeconomic backgrounds are overinvolved in severe accidents with fatal outcomes. The new findings reported here shed light on the social regularity of road accidents and expose new facets in the social organization of death.     

Israeli existential anxiety: cultural trauma and the constitution of national character

The present paper extends recent studies of national character – suggesting that the Israeli case revolves around a set of deep cultural codes which constitute various empirical manifestations. Broadening on this re-emerging paradigm, the study provides a specific case study of a major trait of Israeli national character, namely existential anxiety and fear of annihilation. It does so while advancing the idea that cultural trauma sets a context for Israeli national character. The analysis shows that Israelis constantly reference persistent and endemic existential fears of annihilation. They do so while tying together four levels: the mythological predicament, historical evidence, contemporary threats and future risks.     

L'Organisation internationale du Travail et le travail pénitentiaire: une invitation à changer de paradigme

Les auteurs reviennent sur la vision normative de l'OIT concernant le travail pénitentiaire, qu'ils jugent déconnectée de la réalité des prisons, où l'on constate un foisonnement de formes hybrides de travail des détenus, mêlant secteur public et secteur privé. Ils décrivent les controverses qui entourent la position de l'OIT, à l'heure où les États Membres pressent l'Organisation d'assouplir une vision dichotomique, toujours plus contestée. L'article montre les risques auxquels l'OIT s'expose si elle devait camper sur ses positions, mais aussi si elle adoptait la position défendue par certains de ses États Membres. Les auteurs proposent deux options permettant de dépasser ces positions antagonistes.     

Sources of Volunteer Motivation: Transformational Leadership and Personal Motives Influence Volunteer Outcomes

We examined the separate influences of volunteers' personal motives and their team leaders' behaviors on volunteer satisfaction and contributions, along with mediating processes suggested by self‐determination theory. Participants were 302 volunteers who worked in teams at various sites through a central agency. As predicted, both personal motives for volunteering and transformational leadership influenced volunteer satisfaction through enhanced work meaningfulness and higher‐quality team relationships. However, motives that predicted volunteer contribution were different from those that predicted satisfaction. Whereas satisfaction was positively associated with motives concerning esteem enhancement and value expression, contribution was positively associated with motives to gain understanding and negatively related to motives pertaining to esteem enhancement and social concerns. Transformational leadership was positively associated with volunteer satisfaction, but not with volunteer contributions. The theoretical ramifications of these findings are discussed, along with practical implications for the recruitment and retention of volunteers.     

Vive la (Sexual) Révolution: The political roots of Bourdieu's analysis of gender

This paper argues that the French Revolution constituted the basic metaphor through which Pierre Bourdieu perceived and analyzed gender hierarchies; that the class structure of the ancien régime and the mechanisms of its legitimation were the major metaphors he used through his scathing critiques on the order of the sexes; and that the ideals of liberté , égalité and fraternité were always his reformatory aims for a just, gender-neutral society. The paper shows how this preoccupation with the Revolution of 1789 structured Bourdieu's analysis of gender relations and sexual identities in contemporary society. It exposes the ways in which he identified men with the nobility and women with the third estate; it presents his analyses of the role that traditional ideologies and state bureaucracies play in legitimating this arbitrary order of masculine domination; and it analyzes his proposals for a sexual revolution while exposing the counter-revolutionary forces that persistently negate attempts to reform gender hierarchies. Fundamentally, this new reading of Bourdieu's exegeses on gender suggests that he was working with a ready-made interpretive scheme, a model of society that he was inclined to see as always reproducing itself: the ancien régime .     

Cooperatives as the “enfants terribles” of economics: Some implications for the social economy

The cooperatives are too economically oriented to be included in the non-profit sector and too socially oriented to be considered as an economic for-profit organization. These “enfants terribles” are wholly depersonalized. They represent a broader phenomenon, going beyond the dominant global economy. As such, cooperatives are seen as a model based on dual components, an economic and a social. Here lies the source of the incompatibility between the hegemonic economic paradigm and an organizational rationale claiming to be based on the co-existence of two features, the social and the economic.Therefore, this article supports the idea of non-profit economy, the cornerstone of the social economy but facing outward offering competing goods and services which can facilitate the market economy and mitigate the tendency towards oligopoly.