Priming of actions increases sense of control over unexpected outcomes

Sense of agency (SoA) refers to the feeling that we are in control of our own actions and, through them, events in the outside world. SoA depends partly on retrospectively matching outcomes to expectations, and partly on prospective processes occurring prior to action, notably action selection.To assess the relative contribution of these processes, we factorially varied subliminal priming of action selection and expectation of action outcomes. Both factors affected SoA, and there was also a significant interaction. Compatible action primes increased SoA more strongly for unexpected than expected outcomes. Outcome expectation had strong effects on SoA following incompatible action priming, but only weak effects following compatible action priming. Prospective and retrospective SoA may have distinct and complementary functions.     

Physical activity does not provoke panic attacks in patients with panic disorder: A review of the evidence

Abstract

This paper summarizes the results of published studies in which physical activity has been performed by patients with panic disorder. Several case studies of apparent exercise-induced panic attacks were found. However, in field studies that involved ambulatory monitoring of panic disorder patients only 1 of 91 panic attacks that were monitored actually occurred while the test subject was engaged in moderately intense physical activity. Moreover, only five panic attacks occurred in association with 444 exercise bouts performed by 420 panic disorder patients in laboratory settings despite the fact that exercise induces somatic signs and symptoms of anxiety. Thus, the weight of the published evidence shows that acute physical activity does not provoke panic attacks in panic disorder patients.     

The Many Faces of Closure and Introspection

In this paper I present a more refined analysis of the principles of deductive closure and positive introspection. This analysis uses the expressive resources of logics for different types of group knowledge, and discriminates between aspects of closure and computation that are often conflated. The resulting model also yields a more fine-grained distinction between implicit and explicit knowledge, and places Hintikka’s original argument for positive introspection in a new perspective.     

Transcendental Meditation and Social Psychological Attitudes

Students who practiced Transcendental Meditation (TM) from four university and college campuses were individually matched on seven variables with students from the general population of the same campuses (N # 23 matches). Results of a questionnaire designed to tap six social psychological attitudes indicated significant differences between these groups on five attitudes, with meditating students indicating more positive attitudes. In addition, matched meditating students (N # 6 matches) were compared on the variables of exposure to the TM philosophy and length of time meditating. Results on the exposure dimension found no significant difference between those with high or low exposure on the measured attitudes. Results on the length dimension found long term meditators with significantly more positive attitudes than short term meditators.     

Scientific Thought

Using Pritchard's technique, the frequency and duration of total disappearance of stabilized images were compared using two reporting procedures: i.e., (a) a running commentary and (b) only “off” or “on.” Two target figures were employed: a simple triangle and a five-by-five grid of squares. The incidence and duration of complete disappearance was (a) less with the commentary than with the off-on procedure and (b) less with the grid than with the triangle. Hypotheses to account for the differences are discussed.     

Aptitude Testing Inspired by Information Processing: A Test of the Four-Sources Model

The four-sources model of human abilities posits that individual differences in performance on cognitive tasks are due to differences in working-memory capacity, information-processing speed, the breadth of declarative knowledge, and the breadth of procedural knowledge. To test this model, 310 civilian volunteers were administered a 25-test battery, consisting of verbal, quantitative, and spatial tasks designed to reflect each of the four sources. Confirmatory factor analysis was performed on the variance-covariance matrix of test scores to test the four-sources model and plausible alternatives. The best-fitting model was one that included both the four-sources factors and three content factors. Hierarchical and nonhierarchical models fit about equally well. From additional data on the Armed Services Vocational Aptitude Battery, latent-factor correlations suggested that working-memory capacity overlapped considerably with psychometric general ability (r = .99) and breadth of declarative knowledge overlapped with psychometric verbal ability (r = .97), but information-processing speed was distinct from psychometric perceptual speed (r = .16).     

The Impact of Abuse and Learning Difficulties on Emotion Understanding in Late Childhood and Early Adolescence

Children's affective experiences and cognitive abilities have an impact on emotion understanding. However, their relative contribution, as well as the possibility of an interaction between them, has rarely been examined. The aim of the present study was to evaluate the influence of severe abuse and learning difficulties on simple and complex components of emotion understanding in late childhood and early adolescence. A total of 28 older children and young adolescents were selected for the study. Half of the participants had suffered from severe abuse, and half of these abused children additionally had learning disabilities. The remaining half of the sample had no history of abuse but were matched with the abused children on learning difficulties, age and gender. The participants’ emotion understanding was assessed with the Test of Emotion Comprehension (TEC). Results showed that (a) learning difficulties but not abuse had an impact on emotion understanding, (b) there was no interaction effect of abuse and learning difficulties on emotion understanding, and (b) the observed effects of learning difficulties were most apparent for the understanding of relatively complex components of emotion and not for simple components. The results are discussed in terms of their theoretical and practical implications.     

Torque as a Predictor of Reading Achievement

The present study assessed the utility of the Torque Test (Blau, 1977b) as a predictor of reading performance. Children (N = 149) were administered the Torque Test, the Harris Test of Lateral Dominance (Harris, 1958), the Wide Range Achievement Test, (Jastak & Jastak, 1965), and the Bender Gestalt Test (Koppitz, 1975). Torque scores of disabled and nondisabled readers did not differ significantly, and the correlation between torque and WRAT grade level scores was substantively low. It was concluded that torque is not a useful measure of reading ability.     

How simulations fail

‘The problem with simulations is that they are doomed to succeed.’ So runs a common criticism of simulations—that they can be used to ‘prove’ anything and are thus of little or no scientific value. While this particular objection represents a minority view, especially among those who work with simulations in a scientific context, it raises a difficult question: what standards should we use to differentiate a simulation that fails from one that succeeds? In this paper we build on a structural analysis of simulation developed in previous work to provide an evaluative account of the variety of ways in which simulations do fail. We expand the structural analysis in terms of the relationship between a simulation and its real-world target emphasizing the important role of aspects intended to correspond and also those specifically intended not to correspond to reality. The result is an outline both of the ways in which simulations can fail and the scientific importance of those various forms of failure.     

Intensionality and Epistemic Justification

The purpose of this paper is to raise a new objection to externalist process reliabilism about epistemic justification. The objection is that epistemic justification is intensional—it does not permit the substitution of co-referring expressions—and reliabilism cannot accommodate that.