Logic Without Contraction as Based on Inclusion and Unrestricted Abstraction

On the one hand, the absence of contraction is a safeguard against the logical (property theoretic) paradoxes; but on the other hand, it also disables inductive and recursive definitions, in its most basic form the definition of the series of natural numbers, for instance. The reason for this is simply that the effectiveness of a recursion clause depends on its being available after application, something that is usually assured by contraction. This paper presents a way of overcoming this problem within the framework of a logic based on inclusion and unrestricted abstraction, without any form of extensionality. This revised version was published online in June 2006 with corrections to the Cover Date.     

Framing Political Risks: Individual Differences and Loss Aversion in Personal and Political Situations

People are motivated to avoid losses. In the context of politics, studies consistently show that the threat of losses increases support for risky public policies more than the promise of gains. Here, we predict that this loss aversion is calibrated by individual differences related to one’s ability to accommodate resource loss, and we investigate how these individual differences moderate reactions to the threat of losses and the promise of gains. Results from large-N experiments consistently demonstrate that this moderation effect crucially depends on whether the resource loss relates to oneself or one’s group—whether the setting is personal or political. Consistent with classic assumptions, individuals with inferior abilities to cope with resource loss are more loss averse in personal settings. In political settings where group resources are threatened, effects reverse: Individuals with superior resources and a more central position within the group consistently respond more to the prospect of loss. As discussed, these findings have important implications for our understanding of why and for whom the threat of loss motivates risky personal and political choices. By consequence, the findings also shed novel light on the psychological underpinnings of recent risky political events.      

Peer victimization and social‐emotional outcomes: The role of teacher and peer support

The relation between peer victimization, risk of social, emotional, and behavioral difficulties, and school‐based sources of social support for students in elementary and middle school were examined. Participants included 656 students in third to eighth grade from one school district. Results indicated that peer support mediated the relation between peer victimization and risk of social, emotional, and behavioral difficulties, but teacher support did not mediate this relation. Conditional indirect effects analyses revealed that the indirect effect of peer support varied as a function of school level (i.e., intermediate and middle school). The implications and limitations of the current study are discussed, as well as directions for future research.

     

Need,Compassion, and Support for Social Welfare

Funding for social welfare depends on citizen support. Drawing on evolutionary psychological approaches to politics, we study two types of need that might shape citizens' welfare support by regulating their feelings of compassion. One type of need is a recipient's absolute need. The other type is acute need created by sudden misfortune, such as sudden job loss. Across four studies, we find that absolute and acute needs independently affect compassion and welfare attitudes. This leads to potential inefficiencies in judgments: People who have fallen far are judged more deserving of compassion and access to welfare even when they are not in an absolute sense the most impoverished.     

(Re)imagining Literacy and Teacher Preparation Through Collaboration

This article reports the outcomes of the first 3 years of an ongoing participatory action research (PAR) project that brought together literacy and content-area teacher educators. The purpose of our collaboration was two-fold: (a) to develop shared understandings or theories related to literacy and the place of literacy instruction in content-area classrooms, and (b) to make changes to our work with preservice teachers in order to prepare them to support adolescents’ content learning and discipline-specific literacy development. The findings reveal that the collaborative activities allowed participants to embrace broad notions of text and literacy that are useful in making sense of disciplinary aims and pedagogy. Furthermore, as teacher educators came to shift their thinking about literacy and disciplinary learning and teaching, their work with preservice teachers changed. Implications for future collaborative activities to promote content-area literacy are discussed.     

Illness perceptions account for variation in positive outlook as well as psychological distress in rheumatoid arthritis

Psychological distress in rheumatoid arthritis (RA) is associated with adverse clinical outcomes, and appears highly related to patients' illness perceptions. This study aimed to investigate the association between illness perceptions, psychological distress, positive outlook and physical outcomes in RA. Two hundred and thirty patients aged >18 years and prescribed at least one disease-modifying anti-rheumatic drug (DMARD) were recruited from outpatient clinics across Hertfordshire (England). Patients completed a questionnaire that assessed psychological distress and positive outlook (depression, anxiety and positive outlook scale), illness perceptions (IPQ-R) and functional disability (health assessment questionnaire). Information regarding prescribed medication and disease activity [disease activity score (DAS28)] was collected from medical notes. Psychological distress, but not positive outlook, was associated with functional disability and DAS28. After controlling for sex, age and DAS28, perceptions of greater symptomatology (identity) and lesser understanding of RA (coherence) were significantly associated with increased psychological distress. Perceptions of greater treatment control were associated with greater positive outlook, but only for those with low DAS28. Coherence was also associated with positive outlook. These findings indicate that illness perceptions may influence psychological distress and positive outlook in RA patients, and may therefore be a useful basis for future psychological interventions.     

Validation of the Holtzman anxiety scale by vasomotor biofeedback

The Holtzman Inkblot Technique (HIT) and the State-Trait Anxiety Inventory were administered to 81 undergraduates who later received biofeedback training for increases in index finger skin temperature. The Holtzman anxiety measure correlated significantly with voluntary temperature increase and the High Anxiety Group, identified by the HIT, was able to achieve significant increases in digital temperature. No significant relationships were found between State-Trait Anxiety measures and either Holtzman anxiety scores or vasomotor control, nor were there significant increases in temperature among State-Trait anxiety groups. The results supported the validity of the HIT as a measure of anxiety, but failed to characterize this anxiety as either state or trait in nature.