A Generalized Proof-Theoretic Approach to Logical Argumentation Based on Hypersequents

Studia Logica - In this paper we introduce hypersequent-based frameworks for the modelling of defeasible reasoning by means of logic-based argumentation and the induced entailment relations. These...     

The Moderating Roles of Perceived Task Interdependence and Team Size in Transformational Leadership’s Relation to Team Identification: A Dimensional Analysis

This study is aimed at investigating perceived task interdependence and team size as contingencies for team leaders’ transformational leadership influence on team identification. Data were obtained from a two-phase survey among 234 employees from ten multinational pharmaceutical subsidiaries in South Korea. Each dimension of transformational leadership by team leaders relates positively to team identification. However, the impact of leadership dimensions on team identification is attenuated by distinct moderator(s): charisma by higher perceived task interdependence, individualized consideration by larger team size, and intellectual stimulation by higher perceived task interdependence or larger team size. This study’s findings help us develop a more nuanced understanding of how transformational leadership operates. This study illustrates that team leaders’ transformational influence on team identification fluctuates, depending on the team structure. Such knowledge may help inform team leader development and team-structuring strategies used by practitioners and may contribute to improving organizational team effectiveness. This is one of the first studies showing evidence that the influence of the dimensions of transformational leadership is contingent upon distinct moderators, thereby contributing to advancing the theory of transformational leadership. Further, this study, by investigating team structure as a contingency of the transformational leadership-team identification relationship, complements previous research that focused on follower characteristics. Additionally, our explicit attention to the team as both the context of leaders’ action and the target of employee identification helps us gain a more concrete understanding of team leadership and team development issues, which are particularly salient in the highly competitive pharmaceutical industry.     

Adherence predictors in an Internet-based Intervention program for depression

Internet-delivered psychotherapy has been demonstrated to be effective in the treatment of depression. Nevertheless, the study of the adherence in this type of the treatment reported divergent results. The main objective of this study is to analyze predictors of adherence in a primary care Internet-based intervention for depression in Spain. A multi-center, three arm, parallel, randomized controlled trial was conducted with 194 depressive patients, who were allocated in self-guided or supported-guided intervention. Sociodemographic and clinical characteristics were gathered using a case report form. The Mini international neuropsychiatric interview diagnoses major depression. Beck Depression Inventory was used to assess depression severity. The visual analogic scale assesses the respondent’s self-rated health and Short Form Health Survey was used to measure the health-related quality of life. Age results a predictor variable for both intervention groups (with and without therapist support). Perceived health is a negative predictor of adherence for the self-guided intervention when change in depression severity was included in the model. Change in depression severity results a predictor of adherence in the support-guided intervention. Our findings demonstrate that in our sample, there are differences in sociodemographic and clinical variables between active and dropout participants and we provide adherence predictors in each intervention condition of this Internet-based program for depression (self-guided and support-guided). It is important to point that further research in this area is essential to improve tailored interventions and to know specific patients groups can benefit from these interventions.     

Friendship Selection and Influence Processes for Physical Aggression and Prosociality: Differences between Single-Sex and Mixed-Sex Contexts

The present study examined to what extent selection and influence processes for physical aggression and prosociality in friendship networks differed between sex-specific contexts (i.e., all-male, all-female, and mixed-sex classrooms), while controlling for perceived popularity. Whereas selection processes reflect how behaviors shape friendships, influence processes reveal the reversed pattern by indicating how friends affect individual behaviors. Data were derived from a longitudinal sample of early adolescents from Chile. Four all-male classrooms (n = 150 male adolescents), four all-female classrooms (n = 190 female adolescents), and eight mixed-sex classrooms (n = 272 students) were followed one year from grades 5 to 6 (M _age = 13). Analyses were conducted by means of stochastic-actor-based modeling as implemented in RSIENA. Although it was expected that selection and influence effects for physical aggression and prosociality would vary by context, these effects showed remarkably similar trends across all-male, all-female, and mixed-sex classrooms, with physical aggression reducing and with prosociality increasing the number of nominations received as best friend in all-male and particularly all-female classrooms. Further, perceived popularity increased the number of friendship nominations received in all contexts. Influence processes were only found for perceived popularity, but not for physical aggression and prosociality in any of the three contexts. Together, these findings highlight the importance of both behaviors for friendship selection independent of sex-specific contexts, attenuating the implications of these gendered behaviors for peer relations.     

What a car does to your perception: Distance evaluations differ from within and outside of a car

Almost a century ago it was first suggested that cars can be interpreted as tools, but consequences of this assumption were never tested. Research on hand-held tools that are used to manipulate objects in the environment suggests that perception of near space is extended by using tools. Literature on environment perception finds perception of far space to be modulated by the observer’s potential to act in the environment. Here we argue that a car increases the action potential and modulates perception of far space in a way similar to how hand-held tools modulate perception of near space. Five distances (4 to 20 meters) were estimated by pedestrians and drivers before and after driving/walking. Drivers underestimated all distances to a larger percentage than did pedestrians. Underestimation was even stronger after driving. We conclude that cars modulate the perception of far distances because they modulate the driver’s perception, like a tool typically does, and change the perceived action potential.     

The experience of meditation for people with amyotrophic lateral sclerosis and their caregivers – a qualitative analysis

There is a lack of studies about psychological interventions for people with amyotrophic lateral sclerosis (ALS) and their caregivers. We investigated the experience of a meditation training program tailored for ALS needs. People with ALS (pALS) and their caregivers that joined a meditation program for ALS were interviewed at the end of the program. Verbatims were analyzed with a qualitative approach. Both pALS and their caregivers reported a positive impact on their psychological well-being, promoted by an increase in acceptance and non-judgmental attitude. Furthermore, coping strategies seem to improve, with a positive effect on resilience skills. The ALS meditation training program seems to be an effective psychological intervention for the promotion of well-being in pALS and their caregivers.     

How heritable is empathy? Differential effects of measurement and subcomponents

Empathy is an important psychological concept influencing social interaction. However, knowledge about its etiological components is still scarce. Estimates for the heritability of empathy range between 0 and 70 % depending on the sample, method of measurement, and level of aggregation. In this study, we investigated the heritability of empathy using an extended twin design. We employed the self-report questionnaire Interpersonal Reactivity Index and an emotion recognition task (Reading the Mind in the Eyes Test). N = 742 twins and non-twin siblings were investigated. For affective empathy and the behavioral paradigm, we found heritability estimates between 52 and 57 %. For cognitive empathy, genetic variance was smaller (27 %), indicating that the heritability of empathy depends on the measured subcomponent, which could be relevant for intervention programs like empathy or compassion trainings. Environmental influences on empathy are mainly effects of non-shared environment, which is an important finding for our understanding of the development of empathy.     

Action Type-Based Factorial Structure of Brief COPE among Hong Kong Chinese

Brief COPE (Carver in International journal of Behavioral Medicine, 4(1), 92–100, 1997) is a multidimensional scale that measures situational and dispositional coping responses. This study evaluated its factor structure and psychometric properties using two Hong Kong college samples (Sample 1; n = 204 & Sample 2; n = 221). Results of confirmatory factor analysis (CFA) indicated that an eleven-factor model, based on action goals (Skinner et al. in Psychological Bulletin, 129(2), 216, 2003), demonstrated a good fit across the two samples. The eleven-factor model fit the data better than five alternative models. We also validated a Traditional Chinese translation of the scale. Multiple-groups CFAs indicated partial scalar invariance across the English and Chinese versions in Hong Kong participants. Nonetheless, convergent validity was supported by the associations between the scores of some, but not all, of the dimensions and related psychological constructs, including psychological distress, optimism, and locus of control. Such associations might help differentiate conceptually distinct coping dimensions. Likewise, our results provided support for the reliability of some, but not all, of the subscale scores. In sum, our results support the multidimensionality of Brief COPE and the use of some of the measure’s factors and subscales. Moreover, Brief COPE and its translated version demonstrated acceptable psychometric properties in Hong Kong Chinese.     

Altered behavioral and neural responsiveness to counterfactual gains in the elderly

Counterfactual information processing refers to the consideration of events that did not occur in comparison to those actually experienced, in order to determine optimal actions, and can be formulated as computational learning signals, referred to as fictive prediction errors. Decision making and the neural circuitry for counterfactual processing are altered in healthy elderly adults. This experiment investigated age differences in neural systems for decision making with knowledge of counterfactual outcomes. Two groups of healthy adult participants, young (N = 30; ages 19–30 years) and elderly (N = 19; ages 65–80 years), were scanned with fMRI during 240 trials of a strategic sequential investment task in which a particular strategy of differentially weighting counterfactual gains and losses during valuation is associated with more optimal performance. Elderly participants earned significantly less than young adults, differently weighted counterfactual consequences and exploited task knowledge, and exhibited altered activity in a fronto-striatal circuit while making choices, compared to young adults. The degree to which task knowledge was exploited was positively correlated with modulation of neural activity by expected value in the vmPFC for young adults, but not in the elderly. These findings demonstrate that elderly participants’ poor task performance may be related to different counterfactual processing.