Hard and Soft Preparation Sets in Boolean Games

A fundamental problem in game theory is the possibility of reaching equilibrium outcomes with undesirable properties, e.g., inefficiency. The economics literature abounds with models that attempt to modify games in order to avoid such undesirable properties, for example through the use of subsidies and taxation, or by allowing players to undergo a bargaining phase before their decision. In this paper, we consider the effect of such transformations in Boolean games with costs, where players control propositional variables that they can set to true or false, and are primarily motivated to seek the satisfaction of some goal formula, while secondarily motivated to minimise the costs of their actions. We adopt (pure) preparation sets (prep sets) as our basic solution concept. A preparation set is a set of outcomes that contains for every player at least one best response to every outcome in the set. Prep sets are well-suited to the analysis of Boolean games, because we can naturally represent prep sets as propositional formulas, which in turn allows us to refer to prep formulas. The preference structure of Boolean games with costs makes it possible to distinguish between hard and soft prep sets. The hard prep sets of a game are sets of valuations that would be prep sets in that game no matter what the cost function of the game was. The properties defined by hard prep sets typically relate to goal-seeking behaviour, and as such these properties cannot be eliminated from games by, for example, taxation or subsidies. In contrast, soft prep sets can be eliminated by an appropriate system of incentives. Besides considering what can happen in a game by unrestricted manipulation of players’ cost function, we also investigate several mechanisms that allow groups of players to form coalitions and eliminate undesirable outcomes from the game, even when taxes or subsidies are not a possibility.     

Metacognitive Interpersonal Therapy for Treating Auditory Verbal Hallucinations in First-onset Schizophrenia

Auditory verbal hallucinations (AVHs) are perceptive-like experiences happening without appropriate stimuli, occurring in two thirds of schizophrenia patients, where they often cause emotional suffering and dangerous behaviors, and interfere with social relationships. Patients with schizophrenia involving AVHs can also be drug-resistant or they may discontinue medications. The most well-known psychotherapeutic intervention for voice-hearing is cognitive behavioral therapy (CBT), which focuses on reducing distress by modifying hearers’ beliefs about their voices. We hypothesize that it is possible to reinforce the clinical approach to AVHs by taking into consideration (a) that patients generally hear voices in particular interpersonal contexts where they experience negative emotions; (b) the relationship between AVHs and metacognition, namely the ability to make sense of mental states. On this basis, AVHs can be seen not just as a cause of emotional distress as CBT postulates, but the outcome of difficulties in meta-cognitively making sense of interpersonal exchanges. In this paper, we describe the treatment of a young man at the onset of schizophrenia with pervasive negative AVHs. The patient was treated with metacognitive interpersonal therapy (MIT), aimed to promote the patient’s metacognition. With this aim, in the first part of the treatment, each time AVHs emerged, the patient’s level of arousal was high and his metacognitive ability very low, the therapist treated AVHs helping the patient to understand and cope with the emotional suffering connected with AVHs. At a more advanced stage of therapy, the therapist helped the patient reach the point of understanding the social triggers which, together with the patient’s self-schemas, ignited his auditory hallucinations; this created the conditions for a significant reduction of the pervasiveness of AVHs.     

Owning Mindfulness: A Bibliometric Analysis of Mindfulness Literature Trends Within and Outside of Buddhist Contexts

The mindfulness literature, now extended beyond strict Buddhist and psychotherapeutic contexts, has trended in some important directions, giving rise to both conflict and opportunity. In terms of mindfulness-directed effort, which academic disciplines are outpacing which? Has the degree of disembeddedness from Buddhist contexts changed over time? What is the relationship between trends in mindfulness, meditation, and Buddhism-oriented literature? Through a bibliometric analysis of mindfulness literature within academic journals, several patterns emerge. Results support a substantial increase in ‘academic effort’ toward mindfulness, crossing a number of disciplines, independent of increased publications concerning meditation, Buddhism, or in these fields at large. While the psychological disciplines have dominated mindfulness literature for several decades, their ‘share’ of the overall pool of academic literature has not increased in recent years. Mindfulness-related effort in the humanities, too, is at an all-time high, but not so from a ‘share’ perspective. Other disciplines are grabbing a larger slice of the pie. This bibliometric analysis aids the interdisciplinary field of mindfulness studies in exploring where they started, factors contributing to subsequent transformations, and how discrete contributing fields relate to one another in the context of the overall field of mindfulness studies.     

Italian American Ethnic Identity Persistence: A Qualitative Study

This study explores the persistence of ethnic identity among second- and fourth-generation Italian American emerging adults. In particular, the relational and college influences affecting its development were examined. The findings indicate that a distinct Italian American ethnic identity persists in this population, although it evolves with distance from the immigrant generation. We found that Italian American identity is relationally dynamic and shaped by many factors, most notably, family ethnic socialization, peer relationships, college experiences, ethnic pride, exposure to Italian culture, and life transitions. These findings extend our understanding of the cyclical nature of ethnic identity development within a specific ethnic group and the unique cultural forces shaping the identity of Italian Americans.     

The "Efficiency" Effect of Conceptual Referents on the Generation of Happiness: A Cross-National Analysis

Journal of Happiness Studies - This paper analyses how different definitions of happiness affect the individual assessment of subjective wellbeing. Bearing in mind the production theory, we study...     

Space and Place. A Morphological Perspective

Axiomathes - The morphological account of landscape aims to overcome the contrast between an objectivist/scientific account of space and the more qualitative/subjective account of place. It does so...     

A Comparison of MMPI-2 Profiles Between Parental Alienation Cases and Custody Cases

Journal of Child and Family Studies - The present study aimed at understanding the personality features of mothers and fathers engaged in parental alienation—a family dynamic in which one...     

Temperament and Character Inventory-R (TCI-R) and Big Five Questionnaire (BFQ): convergence and divergence

This study evaluated the correspondence between measures of two competing theories of personality, the five-factor model as measured by the Big Five Questionnaire (BFQ), and Cloninger's psychobiological theory measured by the Temperament and Character Inventory-Revised (TCI-R). A sample of 900 Italian participants, balanced with respect to sex (393 men and 507 women), and representative of the adult population with respect to age (range 18 to 70 years; M = 39.6, SD = 15.7) completed the TCI-R and the Big Five Questionnaire. All TCI-R personality dimensions except Self-Transcendence were moderately correlated with one or more of the Big Five dimensions (from r = .40 to .61), and the two instruments showed areas of convergence. However, the differences outweighed the similarities, indicating that these current conceptualizations and measures of personality are somewhat inconsistent with each other.     

Self-defining memories and self-defining future projections in hypomania-prone individuals

Mania and hypomania involve dysfunctional beliefs about the self, others, and the world, as well about affect regulation. The present study explored the impact of these beliefs on self-defining memories and self-defining future projections of individuals with a history of hypomanic symptoms. The main findings showed that a history of hypomanic symptoms was related to enhanced retrieval of memories describing positive relationships and to reduced future projections about relationships, suggesting both a need for social bonding and a striving for autonomy. Moreover, hypomania-prone individuals tended to describe more recent events and to produce self-defining memories with references to tension that were more integrated in their self-structure. All of these findings support the presence of conflicting dysfunctional beliefs and the importance of memories containing references to tension in hypomania.