Factor Uniqueness of the Structural Parafac Model

Psychometrika - Factor analysis is a well-known method for describing the covariance structure among a set of manifest variables through a limited number of unobserved factors. When the observed...     

Emotion,rationality, and social identity: a theoretical–methodological proposal for a cognitive approach

Cognitive Processing - Humberto Maturana's biology of cognition and the studies of neuroscientist Antonio Damasio have proposed theories that indicate the role of emotion in cognitive...     

Understanding Engineers’ Responsibilities: A Prerequisite to Designing Engineering Education

Science and Engineering Ethics - The development of the curriculum for engineering education (course requirements as well as extra-curricular activities like study abroad and internships) should be...     

Can the chronic exclusion-resignation link be broken? An analysis of support groups within prisons

Social exclusion, especially when prolonged over time––has a strong impact on the individuals’ health and wellbeing. According to the Temporal Need-Threat Model (Williams, 2009), the experience of chronic social exclusion inescapably leads to a condition of resignation, characterized by feelings of alienation, depression, helplessness, and unworthiness. However, few empirical studies have tested this prediction and its potential moderating factors. In this research, we identified the prison as a prototypical condition of chronic social exclusion, and aimed at (a) empirically testing the link between chronic exclusion and the resignation stage, (b) investigating whether situational factors—such as attending a support group in prison—can reduce the adverse outcomes of the resignation, and (c) exploring the role of individual differences (e.g., psychological flexibility) in mediating the effect of the support group on the resignation. The study involved 136 participants—68 detainees (31 of them participated in a support group) and 68 free citizens. Results showed that prisoners without the support group showed the highest levels of feelings of resignation. By contrast, prisoners in the support group were no different from nonprisoners in terms of resignation stage outcomes, and this beneficial effect of the support group was mediated by higher levels of perceived social support and psychological flexibility. Overall, this study suggests that the link between chronic exclusion and the resignation stage could be moderated by intervening social factors, highlighting the potential benefits of group-based interventions to tackle the negative consequences of chronic exclusion in chronically excluded populations.     

Interpolation in Extensions of First-Order Logic

We prove a generalization of Maehara’s lemma to show that the extensions of classical and intuitionistic first-order logic with a special type of geometric axioms, called singular geometric axioms, have Craig’s interpolation property. As a corollary, we obtain a direct proof of interpolation for (classical and intuitionistic) first-order logic with identity, as well as interpolation for several mathematical theories, including the theory of equivalence relations, (strict) partial and linear orders, and various intuitionistic order theories such as apartness and positive partial and linear orders.