Dysfunctional personality traits in adolescence: effects on alerting,orienting and executive control of attention

The present study examined attentional networks performance in 39 adolescents with dysfunctional personality traits, split into two group, Group < 10 and Group ≥ 10, according to the number of criteria they met at the Structured Clinical Interview for DSM-IV Axis II Personality Disorders. The attentional performance has been tested by means of a modified version of the Attentional Network Test (ANTI-V) which allows testing both phasic and tonic components of the alerting system, the exogenous aspect of the orienting system, the executive network and their interactions. Results showed that the orienting costs of having an invalid spatial cue were reduced in the Group ≥ 10 criteria compared to the Group < 10. Moreover, adolescents included in the Group ≥ 10 showed lower conflict when attention was cued to the target location (valid trials) but showed normal interference when there was no overpowering focus of attention (invalid trials). The results found with ANOVA after splitting the sample into two categorical groups were also observed in a complementary correlation analysis keeping intact the continuous nature of such variables. These findings are consistent with the notion that dysfunctional features of personality disorders may represent the psychological manifestations of a neuropsychological abnormality in attention and executive functioning. Finally, we discuss the implications of this attentional anomaly for dysfunctional personality traits and behaviour.     

Whole-Body Movements in Long-Term Weightlessness: Hierarchies of the Controlled Variables Are Gravity-Dependent

Switching between contexts affects the mechanisms underlying motion planning, in particular it may entail reranking the variables to be controlled in defining the motor solutions. Three astronauts performed multiple sessions of whole-body pointing, in normogravity before launch, in prolonged weightlessness onboard the International Space Station, and after return. The effect of gravity context on kinematic and dynamic components was evaluated. Hand trajectory was gravity independent; center-of-mass excursion was highly variable within and between subjects. The body-environment effort exchange, expressed as inertial ankle momentum, was systematically lower in weightlessness than in normogravity. After return on Earth, the system underwent a rapid 1-week readaptation. The study indicates that minimizing the control effort is given greater weight when optimizing the motor plan in weightlessness compared to normogravity: the hierarchies of the controlled variables are gravity dependent.     

Poor readers but compelled to read: Stroop effects in developmental dyslexia.

We studied a group of 24 children with dyslexia in second to fifth primary school grades by using a discrete-trial computerized version of the Stroop Color-Word Test. Since the classic Stroop effect depends on the interference of reading with color naming, one would expect these children to show no interference or, at least, less interference than normal readers. Children with dyslexia showed, however, a Stroop effect larger than normal readers of the same age. This suggests that reading, although difficult and slow, is an inescapable step that precedes naming both in poor and in normal readers.     

Disorganized Narratives: Problems In Treatment And Therapist Intervention Hierarchy

The way in which patients tell therapists their stories has an impact on treatment. They try to put their emotions and the events generating them, their goals and the behavior they adopt to achieve them, and so on, together in a coherent discourse. But some patients fail in organizing their narratives. They might describe a diffuse arousal without letting the reasons for their discomfort be known, switch from one subject to another without any apparent connection, or pile up one topic after another, thus overwhelming a listener, who is unable to see which is the main one. We call such narratives disorganized. They do not help a patient to make sense of experience or achieve consistency in behavior. A therapist listening has difficulty in planning treatment and often reacts negatively to such patients. Here we propose a series of interventions aimed at improving narrative coherence, creating a sound therapeutic relationship and making treatment effective. We will describe the therapy with a seriously dissociated patient in which this intervention has proven useful.     

General principles for treating personality disorder with a prominent inhibitedness trait: towards an operationalizing integrated technique

Psychotherapists need to perform tasks such as being empathetic, performing an ongoing assessment of cases, self-disclosing, making explicit treatment contracts, validating patients' experiences and promoting awareness of psychological experience, if they are to be effective in treating personality disorder (PD). Successful therapy also requires a systematic accurate PD model. We suggest here that it is still unclear how, when, and according to what session markers therapists need to perform specific operations to maximize therapeutic gains. This article describes and operationalizes a step-by-step procedure for organizing and delivering the interventions necessary for effective outcomes, such as maintaining a good therapeutic relationship, increasing understanding of mental states, reducing symptoms and improving social adaptation. The procedure is illustrated by reference to the treatment of cases of emotionally overly-constricted PDs. We include a theoretical proposal to facilitate the development of measures for evaluating the efficacy of therapist actions.     

Quantum dynamical reduction and reality: Replacing probability densities with densities in real space

Consideration is given to recent attempts to solve the objectification problem of quantum mechanics by considering nonlinear and stochastic modifications of Schrödinger's evolution equation. Such theories agree with all predictions of standard quantum mechanics concerning microsystems but forbid the occurrence of superpositions of macroscopically different states. It is shown that the appropriate interpretation for such theories is obtained by replacing the probability densities of standard quantum mechanics with mass densities in real space. Criteria allowing a precise characterization of the idea of similarity and difference of macroscopic situations are presented and it is shown how they lead to a theoretical picture which is fully compatible with a macrorealistic position about natural phenomena.     

Gastroesophageal reflux disease: alexithymia and attachment style

Alexithymia and its relation with attachment style were evaluated in a group of 69 patients (men, M age = 46.4 yr., SD = 12.6; women, M age = 44.2 yr., SD = 14.4) affected by Gastroesophageal Reflux Disease. Two self-evaluation questionnaires were used for psychological evaluation, the 20 item Toronto Alexithymia Scale (TAS-20) and the Attachment Style Questionnaire (ASQ). The TAS-20 analysis showed that the clinical sample taken as a whole did not score in the alexithymic range. The inverse correlations between the Confidence ASQ subscale and the Difficulty Communicating Feelings TAS-20 subscale showed that communication of emotions could develop more easily within the framework of a relational context characterized by safety and confidence. In this group of patients this was represented by the referent caregiver.     

Metacognitive Interpersonal Therapy Improves Adherence to Antiretroviral Therapies in a Man with a Severe Personality Disorder: A Case Report

Treatment adherence by patients with HIV ensures they gain the full benefit of antiretroviral medications and extend their lives. One problem which may contribute to poor adherence is deficits in metacognition or the capacity to make sense of mental states. In particular, persons who struggle to notice and think about their thoughts and feelings may be less able to direct their own recovery by taking advantage of effective treatments. This raises the possibility that treatments which lead to improved metacognitive function may enhance treatment adherence. We describe the case of a man in an advanced stage of AIDS with Kaposi’s sarcoma. The patient was treated with Metacognitive Interpersonal Therapy combined with psychoeducation about pharmacological treatment for HIV. Primary medical outcomes were suppression of viral load, increase of CD4 count and control of AIDS related conditions such as Kaposi’s sarcoma. The primary psychological outcome was reduction of personality disorders criteria. The patient was able to understand what led him to discontinue medication and then later regain full adherence. He achieved suppression of viral load and restore of CD4 count. As regard severity of personality disorder, he achieved reliable change. Interventions such as Metacognitive Interpersonal Therapy may assist patients with HIV to gain the metacognitive capacities to make sense of their medical and psychological challenges and adhere to antiretroviral therapies leading to enhanced levels of health. Future studies are needed to explore these findings in larger controlled studies.     

Robust recovery of human motion from video using Kalman filters and virtual humans

In sport science, as in clinical gait analysis, optoelectronic motion capture systems based on passive markers are widely used to recover human movement. By processing the corresponding image points, as recorded by multiple cameras, the human kinematics is resolved through multistage processing involving spatial reconstruction, trajectory tracking, joint angle determination, and derivative computation. Key problems with this approach are that marker data can be indistinct, occluded or missing from certain cameras, that phantom markers may be present, and that both 3D reconstruction and tracking may fail. In this paper, we present a novel technique, based on state space filters, that directly estimates the kinematical variables of a virtual mannequin (biomechanical model) from 2D measurements, that is, without requiring 3D reconstruction and tracking. Using Kalman filters, the configuration of the model in terms of joint angles, first and second order derivatives is automatically updated in order to minimize the distances, as measured on TV-cameras, between the 2D measured markers placed on the subject and the corresponding back-projected virtual markers located on the model. The Jacobian and Hessian matrices of the nonlinear observation function are computed through a multidimensional extension of Stirling's interpolation formula. Extensive experiments on simulated and real data confirmed the reliability of the developed system that is robust against false matching and severe marker occlusions. In addition, we show how the proposed technique can be extended to account for skin artifacts and model inaccuracy.