On some objective and subjective aspects of discriminating between correlated and independent patterns and their relationship to Locus of Control and depression

ABSTRACT

Acknowledging the fact that there seems to be a well-established connection between depression and Locus of Control, we propose that Locus of Control is at least partly determined by one’s objective ability to discriminate between random and non-random stimuli and events. Further, we claim that this ability is indirectly related to depression through Locus of Control which serves as a mediator. In addition, we hypothesise that a subjective threshold, important in discriminating between random and correlated stimuli, is directly related to both depression and Locus of Control. Results from a study with 128 subjects indicate that the majority of our conjectures are supported by the data, the exception being that while the subjective threshold is significantly related to depression it appears to have no tangible influence on Locus of Control.     

The Decision-Theoretic Lockean Thesis

Abstract

Certain philosophers maintain that there is a ‘constitutive threshold for belief’: to believe that p just is to have a degree of confidence that p above a certain threshold. On the basis of this view, these philosophers defend what is known as ‘the Lockean Thesis’, according to which it is rational to believe that p just in case it is rational to have a degree of confidence that p above the constitutive threshold for belief. While not directly speaking to the controversy over the Lockean Thesis, this paper defends the general idea behind it—namely, the thesis that there is some threshold such that it is rational to believe that p if and only if it is rational to have a degree of confidence greater than that threshold. This paper identifies the threshold in question—not with the alleged constitutive threshold for belief—but with what I call ‘the practical threshold for rational belief’. Roughly, the thesis defended here is that it is rational to believe that p if and only if it is rational to have a degree of confidence that p that rationalizes engaging in certain types of practical reasoning.     

On Classification of Scientific Revolutions

The question whether Kuhn's theory of scientific revolutions could be applied to mathematics caused many interesting problems to arise. The aim of this paper is to discuss whether there are different kinds of scientific revolution, and if so, how many. The basic idea of the paper is to discriminate between the formal and the social aspects of the development of science and to compare them. The paper has four parts. In the first introductory part we discuss some of the questions which arose during the debate of the historians of mathematics. In the second part, we introduce the concept of the epistemic framework of a theory. We propose to discriminate three parts of this framework, from which the one called formal frame will be of considerable importance for our approach, as its development is conservative and gradual. In the third part of the paper we define the concept of epistemic rupture as a discontinuity in the formal frame. The conservative and gradual nature of the changes of the formal frame open the possibility to compare different epistemic ruptures. We try to show that there are four different kinds of epistemic rupture, which we call idealisation, re-presentation, objectivisation and re-formulation. In the last part of the paper we derive from the classification of the epistemic ruptures a classification of scientific revolutions. As only the first three kinds of rupture are revolutionary (the re-formulations are rather cumulative), we obtain three kinds of scientific revolution: idealisation, re-presentation, and objectivisation. We discuss the relation of our classification of scientific revolutions to the views of Kuhn, Lakatos, Crowe, and Dauben. This revised version was published online in August 2006 with corrections to the Cover Date.     

Surface energy of free clusters of bubbles: An estimation

We propose an approximate equation for the surface energy of two-dimensional free bubble clusters which we compare with exact calculations of the surface energy of symmetrical clusters consisting of a central bubble surrounded by one or two shells of bubbles of two different areas. The accuracy of the equation is good for relatively narrow distributions of the areas and of the number of sides of the bubbles but underestimates the energy for large widths of those distributions. We propose a similar approximate equation for the surface energy of three-dimensional clusters.     

Temperature-dependent crack surface tension

The fracture surface energy is calculated for a one-dimensional, exactly solvable model of a crack. The temperature dependence of the crack surface tension is determined on the basis of a self-consistent Einstein approach. It is found that lattice vibrations result in a strong reduction in the crack surface tension.     

How to do philosophy of religion: towards a possible speaking about the impossible

Abstract

It is postulated from different philosophical traditions, and explicitly in recent literature, that there is no further need for doing philosophy of religion – it has become an impossible task. I argue, however, that there remains a philosophical space for this practice and that this space determines greatly how philosophy of religion can be done. The starting point of my argument is the current discussion in the SAJP between De Wet and Giddy and the significance of my article is that it puts this debate within the broader international philosophical context by engaging the work of Trakakis and Desmond to resolve some of the apparently intractable issues raised. Trakakis discusses the divide between the analytic and continental philosophical traditions in which De Wet and Giddy’s work is further contextualized and clarified. Desmond’s work is seminal in its search for a metaxology wherein he advocates a new ‘in between’ position for doing philosophy of religion. I take this view of Desmond further by applying it to the current debate in South Africa and also using it to indicate some possibilities of speaking about the impossible.     

Comments on ‘A model of diffusion-induced grain boundary migration’ by T. K. Chaki

Abstract

Chaki (1988) has recently proposed a model for diffusion-induced grain boundary migration (DIGM). In his Letter he concluded that the interface energy of a grain boundary and the free energy of mixing are responsible for DIGM and, from the equations he derived, it was claimed that they can explain many DIGM experimental results. However, on examining his model closely there appear to be some fundamental difficulties. The following are comments on his Letter:

(1) In Chaki's calculation of ΔG_s he assumed that, after interface 1 had moved a distance δx, the radius of curvature of this interface increased from R to R + δx, which gives a surface energy drop of 2γV_m δx/R². However from many DIGM observations (for example Balluffi and Cahn (1981)) the curvature of a migrating boundary is increased rather then decreased, that is, the surface free- energy term actually prevents a grain boundary from migrating rather than helping it!

(2) Chaki considered ΔG_cryst during the migration of interface 2. It is also necessary to consider AGcrys, during the migration of interface 1, since within the migration distance δx the structure is changed from a crystalline structure to a grain boundary core structure. ΔG_m should also be considered during the migration of interface 2 since the concentration of the area swept by interface 2 will not be the same as that of a grain boundary core.     

Low-energy boron implants into silicon: A molecular dynamics simulation study of implants into a stepped surface

Molecular dynamics simulations have been conducted to study implantation of boron with a low kinetic energy (E _k in the range 5 eV) into the silicon surface. The bombarded surface has a realistic stepped structure and the geometry of the step edge is taken from the theory of Chadi (1987, Phys. Rev. Lett., 59, 1691). It is found that reflection is the more common event. However subsurface implants and adatom formations are also observed. The effect of the step morphology is important and different trajectories are observed if the ions hit steps of different shapes.     

Pattern evolution of crystalline Ge aggregates during annealing of an Al/Ge bilayer film deposited on a SiO2 substrate

When an Al/Ge bilayer film deposited on a SiO2 substrate is annealed at 373- 398 K, Ge atoms diffuse out from the inner amorphous Ge layer and spread over the free surface of the outer Al layer to form crystalline Ge aggregates exhibiting complex substructures. Scanning electron microscopy observations indicate that the activation energy for the pattern evolution of Ge aggregates on the free surface because of annealing is 1.56 eV which is about half the activation energy for crystallization of amorphous Ge.     

Specific subtype of fluency disorder affecting French speaking children: A phonological analysis

PurposeClinicians working with fluency disorders sometimes see children whose word repetitions are mostly located at the end of words and do not induce physical tension. Prior studies on the topic have proposed several names for these disfluencies including “end word repetitions”, “final sound repetitions” and “atypical disfluency”. The purpose of this study was to use phonological analysis to explore the patterns of this poorly recognized fluency disorder in order to better understand its specific speech characteristics.MethodsWe analyzed a spontaneous language sample of 8 French speaking children. Audio and video recordings allowed us to study general communication issues as well as linguistic and acoustical data.ResultsWe did not detect speech rupture or coarticulation failures between the syllable onset and rhyme. The problem resides primarily on the rhyme production with a voicing interruption in the middle of the syllable nucleus or a repetition of the rhyme (nucleus alone or nucleus and coda), regardless of the position in the word or phrase.ConclusionThe present study provides data suggesting that there exist major differences in syllable production between the disfluencies produced by our 8 children and stuttered disfluencies. Consequently, we believe that this fluency disorder should be recognized as distinct from stuttering.     

Differences in attitudes towards inclusion between parents of children with and without disabilities

IntroductionInclusion is among the greatest challenges facing educational systems throughout the world today. Parents’ attitudes play a key role in the successful implementation of inclusion. Therefore, there is a growing interest in comparing the attitudes towards inclusion among parents of children with and without disabilities.ObjectiveThe current study was set out to assess if there are differences in attitudes towards inclusion between parents of children with and without disabilities.MethodThe sample consisted of 332 parents (127 parents of children with disabilities and 205 parents of children without disabilities). All children attended general education primary schools. Participants completed anonymously the Greek version of Attitude Survey Towards Inclusive Education – Parents (de Boer et al., 2012a, b).ResultsThe findings showed no significant differences in attitudes towards inclusion between parents of children with and without disabilities. However, significant differences were found in parents’ attitudes towards inclusion based on their familiarity with a disabled person and the type of disabilities (congenital or acquired).ConclusionThese findings highlight the need to take into consideration parents’ and children's factors during the development of interventions to change attitudes towards inclusion.     

Treatment of Insomnia within an Interdisciplinary Pain Rehabilitation Program: A Randomized Trial

Background/ObjectivePrior research indicates interdisciplinary pain rehabilitation program (IPRP) usual care (UC) does not sufficiently address sleep problems among individuals with comorbid chronic pain and clinical levels of insomnia. Cognitive behavioral therapy for insomnia (CBT-I) is an evidence-based insomnia intervention. The current study investigates the translation of CBT-I into an IPRP.MethodIn this single-site, prospective, randomized controlled pilot study, insomnia and pain-related outcomes were examined for adults participating in a 10-week IPRP (N = 79) who were allocated to a 4-session group-based CBT-I (IPRP+CBT-I) or usual care (IPRP-UC) condition.ResultsPatients in the IPRP+CBT-I group showed improvements in insomnia symptoms at the end compared to the beginning of the CBT-I group; however, there were no IPRP outcome differences relative to the IPRP-UC condition. Both groups reported statistically significant reductions in insomnia, pain severity, pain-related life interference, and depressed mood. Fewer than one-third of participants reported clinically meaningful reductions in insomnia symptoms following IPRP participation.ConclusionsFurther efforts are needed to address sleep problems in pain rehabilitation settings.     

Atomistic calculation of the interaction between an edge dislocation and a free surface

By using molecular statics, we compute the variation in the excess energy associated with the gradual approach of an edge dislocation towards the free surface of a crystal. The calculations rely on a phenomenological potential adapted to aluminium and an appropriate constraint procedure that allows investigations of both the extended and the perfect configurations of the dislocation core. Thereby, an estimation of the energy required for the introduction of a dislocation in a thin film is obtained.     

A one-boundary drift-diffusion model for time to collision estimation in a simple driving task

ABSTRACT

Driving is a complex everyday task. Every year a huge number of driving accidents around the world causes serious physical and mental injuries and deaths. The correct estimation of the remaining time to reach the other vehicles on the road, known as time to collision (TTC), is an important factor to avoid accidents. In this study, we aimed to use a drift-diffusion model (DDM) to better understand the participants’ estimation of TTC in two driving experiments. Both experiments were the same, except that in one of them participants were asked to finish the experiment as fast as they could, while in the other experiment there was no time constraint. DDM fitted the data from all participants well in both experiments according to the chi-square goodness of fit criterion. Also, results showed that time pressure increases subjects’ estimated TTC, the rate of accumulation of sensory information and the response threshold.     

The differences between cerebral dominance patterns in the speed and accuracy of information processing among university students

IntroductionThe subject of cerebral dominance has received great attention by researchers; however, there is a paucity of studies that have examined its relationship to information processing.ObjectiveThe current study aims to reveal the differences between the cerebral dominance patterns (left cerebral dominance, right cerebral dominance, integrated parallel cerebral dominance) in the speed and accuracy of information processing.MethodA sample of (182) volunteers university students, (mean age ± SD, 19.92 ± 2.76 years; range, 18–24 years; 68 male, 114 females). The Human Information processing survey was applied to the participants. Each subject was exposed to two elementary cognitive tasks (Stroop task and Eriksen flanker task). Each task included two experimental conditions: first, the congruent condition that reflects the automatic processing of information; second, the incongruent condition that reflects the controlled processing of information.ResultsThe results of the study revealed that there were no differences between the patterns of cerebral dominance in the speed and accuracy of information processing.ConclusionAlthough the relationship between cerebral dominance and information processing is not significant, we need more studies to examine this relationship in other samples and in other experimental conditions.     

The heat of transport of vacancies in solid argon

Abstract

Computer simulations of the motion of vacancies in a Lennard-Jones model of solid argon have been made by the molecular dynamics technique. The results have been used to evaluate and analyse the heat of transport parameter Q*v for vacancies in this substance. At a temperature of 30 K it is found to be -12 kJ mol-1. The theory of transport shows that there are three main contributions to this quantity coming from the fluxes of kinetic energy, potential energy and a virial of the forces related to the local stress tensor. The main contribution to Q*v is found to be that from the virial term. This explains why discussions that aim to relate the heat of transport to the corresponding enthalpy of activation (which is almost entirely potential energy) have not been successful.     

Toxic Environment of war: Maternal prenatal heavy metal load predicts infant emotional development

BackgroundPeople in war zones are exposed to heavy metal contamination deriving from new-generation weapons, in addition to exposure to psychologically traumatizing war events. Pregnant women and their children-to-be are particularly vulnerable to both biological and psychological war effects.ObjectiveThe aim of the current study was to analyse the impact of maternal prenatal heavy metal contamination on infant emotional development and to examine the potential moderating role of maternal symptoms of post-traumatic stress disorder (PTSD) in the association between heavy metal load and infant emotional development.MethodsThe participants were 502 Palestinian mothers, pregnant in their first trimester during the 2014 War on Gaza. The mothers were recruited at their delivery (T1) and followed at the infants’ age of 6–7 months (T2; N = 392). The load of five weapon-related heavy metals (chromium, mercury, vanadium, strontium, and uranium) was analysed by Inductively Coupled Plasma Mass Spectrometry (ICP/MS) from mothers’ hair samples at childbirth (T1). Assessment of maternal PTSD symptoms was based on the Harvard Trauma Questionnaire (HTQ) and infant emotional development on the Infant Behavior Questionnaire (IBQ), both reported by mothers (T2).ResultsTwo of the analysed metals, chromium and uranium, adversely predicted children’s early emotional development, indicated by decreased positive affectivity, increased negative emotionality, and problems in early orientation and regulation. Mother’s PTSD did not moderate the impact of heavy metal contamination on children’s emotional development.ConclusionsAdverse impact of war is not limited to those who experience it directly, but is passed on to future generations through multiple mechanisms. International organizations are obliged to protect parents and infants from the modern weaponry in wars.     

Mentalizing in psychotherapy: patients’ and therapists’ reflective functioning during the psychotherapeutic process / Mentalizando en psicoterapia: funcionamiento reflexivo de pacientes y terapeutas durante el proceso psicoterapéutico

Abstract

There has been a growing interest in mentalization in clinical research given its relationship with normal and psychopathological functioning and its explanatory potential as a mechanism of psychotherapeutic change. This study uses the Reflective Functioning Scale (RFS) to identify and characterize mentalization manifestations in psychotherapeutic interaction. Method: the RFS was applied to a sample of relevant episodes — 44 sessions from five different psychotherapy processes carried out with adult patients who had different diagnoses. Results: we observed a higher probability of reflective functioning (RF) passages in relevant events than in neutral segments. There were no differences in the RF passages according to episode or actor type, but there were in RF Failures, which is more likely in patients and during rupture episodes. Discussion: although certain modifications are necessary, the RFS can be applied to clinical material, and it is a promising strategy for the study of mentalization within psychotherapy.     

Emotion in an alliance rupture and resolution sequence: A theory‐building case study

Aims: Alliance rupture and resolution processes are occasions for the client to have his or her core interpersonal patterns activated in the here and now of the therapy and to negotiate them with the therapist. So far, no studies have been conducted on emotional processing, from a sequential perspective using distinct emotion categories, in alliance rupture and resolution therapy sessions. This is the objective of this theory‐building case study. Method: This client underwent a 34‐session long, psychodynamic psychotherapy within the context of an open trial. An alliance rupture‐resolution sequence of two subsequent sessions, along with a third control session, was selected from this case and these sessions were rated using the Classification of Affective‐Meaning States (CAMS), an observer‐rated method to classify distinct emotions, according to current emotion‐focused models. Results: The results indicate that the rupture session was associated, above all, with core maladaptive fear, evoked in the actual here and now of the therapeutic relationship, whereas the resolution session was associated with the expression and experience of adaptive hurt as regards biographical issues of the client. Discussion: These results are discussed with regard to the alliance rupture and resolution model and the exploration of integrating client's emotional processing in the model.