The Interference of Introversion–Extraversion and Depressive Symptomatology with Reasoning Performance: A Behavioural Study

The objective of this study was to investigate the link between the Eysenck Personality Questionnaire (EPQ) scores and depressive symptomatology with reasoning performance induced by a task including valid and invalid Aristotelian syllogisms. The EPQ and the Zung Depressive Scale (ZDS) were completed by 48 healthy subjects (27 male, 21 female) aged 33.5 ± 9.0 years. Additionally, the subjects engaged into two reasoning tasks (valid vs. invalid syllogisms). Analysis showed that the judgment of invalid syllogisms is a more difficult task than of valid judgments (65.1% vs. 74.6% of correct judgments respectively, p < 0.01). In both conditions, the subjects’ degree of confidence is significantly higher when they make a correct judgment than when they make an incorrect judgment (83.8 ± 11.2 vs. 75.3 ± 17.3, p < 0.01). Subjects with extraversion as measured by EPQ and high sexual desire as rated by the relative ZDS subscale are more prone to make incorrect judgments in the valid syllogisms, while, at the same time, they are more confident in their responses. The effects of extraversion/introversion and sexual desire on the outcome measures of the valid condition are not commutative but additive. These findings indicate that extraversion/introversion and sexual desire variations may have a detrimental effect in the reasoning performance.     

I've Got My Eyes on You: Implicit Social‐Pressure Cues and Prosocial Behavior

Explicit social pressure has been shown to be a powerful motivator of prosocial behavior‐like voting in elections. In this study, I report the findings of a randomized field experiment designed to study the impact of more subtle, implicit social‐pressure treatments. The results of the experiment, conducted in the October 2011 municipal elections in Key West, Florida, demonstrate that even subtle, implicit observability cues can effectively mobilize citizens to vote, perhaps as much as explicit surveillance cues. The findings speak more broadly to our understanding of human decision making, and even evolution, and provide fodder for the claim that humans are evolutionarily programmed to respond to certain stimuli. I interpret the evidence to support the notion that evolutionarily charged impulses, like exposure to images that implicitly signal the potential for surveillance and observability, are sufficient to overcome powerful collective action incentives to free ride.     

Raising Hope: Hope Inducement and Voter Turnout

Politicians routinely invoke hope on the campaign trail, presumably because they believe that inducements of hope attract supporters and impel citizens to the polls. Social psychologists and political scientists similarly posit that activating positive emotions like hope and other powerful psychological mechanisms has the capacity to stimulate prosocial behavior, like voting in elections. In this study, I subject these claims to empirical scrutiny by designing and implementing a series of randomized field experiments to examine whether inducing hope raises electoral participation. Overall, I find little evidence that hope affects voting behavior, but I acknowledge the null effects may reflect the [im]potency of the treatment.     

Positive Social Pressure and Prosocial Motivation: Evidence from a Large‐Scale Field Experiment on Voter Mobilization

Political scientists are increasingly exploring the psychological underpinnings of voting behavior using field experimental techniques. Research in psychology demonstrates that positive reinforcement—what I describe as positive social pressure—motivates prosocial behavior. A distinctive feature of the current study is the focus on key subgroups of voters, namely unmarried women and minorities. Attention to these voter subgroups allows us to build upon findings reported in previous studies that leave questions about the generalizability of the reported effects of positive social pressure to key demographic subgroups of voters largely unanswered. This article reports the results of a large‐scale randomized field experiment designed to investigate the impact of positive social pressure on voter turnout. The experiment was conducted during the November 2009 gubernatorial election in New Jersey, and the results suggest positive social pressure mobilizes voters. Moreover, the effects appear to be robust across subgroups of voters, including minorities and unmarried women, and both lower‐ and higher‐propensity voters.     

Many-Valued Points And Equality

In 1999, da Silva, D'Ottaviano and Sette proposed a general definition for the term translation between logics and presented an initial segment of its theory. Logics are characterized, in the most general sense, as sets with consequence relations and translations between logics as consequence-relation preserving maps. In a previous paper the authors introduced the concept of conservative translation between logics and studied some general properties of the co-complete category constituted by logics and conservative translations between them. In this paper we present some conservative translations involving classical logic, Lukasiewicz three-valued system L ₃, the intuitionistic system I ¹ and several paraconsistent logics, as for instance Sette's system P ¹, the D'Ottaviano and da Costa system J ₃ and da Costa's systems C _n, 1 n.     

Prolegomena to Concise Theories of Action

A new methodology for developing theories of action has recently emerged which provides means for formally evaluating the correctness of such theories. Yet, for a theory of action to qualify as a solution to the frame problem, not only does it need to produce correct inferences, but moreover, it needs to derive these inferences from a concise representation of the domain at hand. The new methodology however offers no means for assessing conciseness. Such a formal account of conciseness is developed in this paper. Combined with the existing criterion for correctness, our account of conciseness offers a framework where proposed solutions to the frame problem can be formally evaluated.     

On the links between self-discrepancies, rumination, metacognitions, and symptoms of depression in undergraduates

The present study aimed to test the central components of Papageorgiou and Wells' (2003) non-clinical metacognitive model of rumination and depression that is grounded on the Self-Regulatory Executive Function (S-REF) model of emotional disorders [Wells, A., & Matthews, G. (1994). Attention and emotion: A clinical perspective. Hove, UK: Lawrence Erlbaum.]. A second aim of this study was to extend the non-clinical model with the concept of self-discrepancy in line with the S-REF model. Data of the current study were collected in a large sample of non-clinical Dutch undergraduates (N=196), who completed a battery of questionnaires including measures of rumination, positive and negative metacognitions, depressive symptoms, and self-discrepancy (i.e., actual-ideal, actual-ought, and actual-feared discrepancies). Hypothesized relationships among these variables were tested by means of structural equation modelling. Following some theoretically consistent modifications, the model was an adequate fit to the data. With respect to the second aim of the study, self-discrepancies were directly linked to symptoms of depression as well as indirectly via the cognitive processes involved in the metacognitive model of rumination and depression. Evidence was found for positive beliefs about rumination to partially mediate the relation between self-discrepancy and rumination. Clinical implications of the findings, including implementation of a metacognitive-focused cognitive therapy of depression, and suggestions for future research are discussed.     

Psychometric evaluation of the Brazelton Scale in a sample of Spanish newborns

This study analyses the data obtained from a sample of 220 healthy full-term neonates evaluated with the Neonatal Behavioral Assessment Scale, NBAS, 3rd edition. Standard scores were obtained for each of the 35 behavioral items and analysis of the main components of all the clusters was performed. Similarly to the original scale, the five following factors were obtained: Autonomic and Motor Systems, Habituation, State Organization, State Regulation, and Social Interactive. The analysis of the reliability of these groupings reveals that it is between moderate and high (the average Cronbach's alpha coefficient was .78).     

A pilot randomized trial of metacognitive therapy vs applied relaxation in the treatment of adults with generalized anxiety disorder

Metacognitive Therapy (MCT) and Applied Relaxation (AR) were compared in a pilot treatment trial of generalized anxiety disorder (GAD). Twenty outpatients meeting criteria for DSM-IV-TR GAD were assessed before treatment, after treatment and at 6 m and 12 m follow-up. The patients were randomized and treated individually for 8-12 weekly sessions. There was no drop-out from MCT and 10% at 6 m follow-up from AR. At post-treatment and at both follow-up points MCT was superior to AR. Standardized recovery rates for MCT at post-treatment were 80% on measures of worry and trait-anxiety compared with 10% following AR. At 6 m follow-up recovery rates for MCT were 70% on both measures compared with 10% and 20% for AR. At 12 m follow-up recovery rates for MCT were 80% (worry) and 60% (trait-anxiety) compared with 10% and 20% following AR. The recovery rates for MCT are similar to those obtained in an earlier uncontrolled trial (Wells & King, 2006). The effect sizes and standardized recovery rates for MCT suggest that it is a highly effective treatment.