Tool use in neurodegenerative diseases: Planning or technical reasoning?

Recent works showed that tool use can be impaired in stroke patients because of either planning or technical reasoning deficits, but these two hypotheses have not yet been compared in the field of neurodegenerative diseases. The aim of this study was to address the relationships between real tool use, mechanical problem‐solving, and planning skills in patients with Alzheimer's disease (AD, n = 32), semantic dementia (SD, n = 16), and corticobasal syndrome (CBS, n = 9). Patients were asked to select and use ten common tools, to solve three mechanical problems, and to complete the Tower of London test. Motor function and episodic memory were controlled using the Purdue Pegboard Test and the BEC96 questionnaire, respectively. A data‐transformation method was applied to avoid ceiling effects, and single‐case analysis was performed based on raw scores and completion time. All groups demonstrated either impaired or slowed tool use. Planning deficits were found only in the AD group. Mechanical problem‐solving deficits were observed only in the AD and CBS groups. Performance in the Tower of London test was the best predictor of tool use skills in the AD group, suggesting these patients had general rather than mechanical problem‐solving deficits. Episodic memory seemed to play little role in performance. Motor dysfunction tended to be associated with tool use skills in CBS patients, while tool use disorders are interpreted as a consequence of the semantic loss in SD in line with previous works. These findings may encourage caregivers to set up disease‐centred interventions.     

A family of Gödel hybrid logics

In this paper, we define a family of fuzzy hybrid logics that are based on Gödel logic. It is composed of two infinite-valued versions called ${\mathsf{GH}}_{\infty }$ and ${\mathsf{WGH}}_{\infty }$, and a sequence of finitary valued versions ${({\mathsf{GH}}_n)}_{0<n<\infty }$. We define decision procedures for both ${\mathsf{WGH}}_{\infty }$ and ${({\mathsf{GH}}_n)}_{0<n<\infty }$ that are based on particular sequents and on a set of proof rules dealing with such sequents. As these rules are strongly invertible the procedures naturally allow one to generate countermodels. Therefore we prove the decidability and the finite model property for these logics. Finally, from the decision procedure of ${\mathsf{WGH}}_{\infty }$, we design a sound and complete sequent calculus for this logic.     

“If You Can’t Follow,You’re Out.” The Perspectives of People with Mental Health Problems on Citizenship

Applied Research in Quality of Life - The new paradigm of ‘community care’ promotes the integration of people with mental health problems in society. This reconversion in social care...     

Effect of environmental exposure to a maternally-learned odorant on anxiety-like behaviors at weaning in mice

Animal Cognition - Early sensory experience, such as exposure to maternal or other environmental factors, is considered to influence neurocognitive development and behaviors. In many species,...     

Mentalization-Based Interventions in Child Psychiatry and Youth Protection Services I: Objectives,Setting, General Principles and Strategies

ABSTRACT

Many of the children who receive services in child psychiatry or are in the care of Youth Protection Services present with complex, multiple and often severe problems. Classic psychodynamic psychotherapy seems to be of little benefit to them. The majority of these children tend to not use symbolic play as a means of expressing their intrapsychic conflicts or relational difficulties and they do not verbally communicate much with clinicians. They are more likely to display an imaginative poverty that translates into boredom, motor discharge, and an inability to use the material put at their disposal for therapeutic purposes. The systematic and rigorous observations of these children in Quebec revealed that the majority of them present with severe mentalizing difficulties. They often show attitudes and behaviors linked to the prementalizing modes of psychic functioning. This article presents a mentalization-based intervention adapted to these children’s difficulties. The objectives, adaptation of the work setting, and general principles underlying this intervention are discussed. In addition, general intervention strategies are also covered. These interventions are considered as preparatory work whose principal purpose is to enable children to benefit later on from psychodynamic psychotherapy. The authors also recommend specific intervention strategies adapted to children’s predominant mode of psychic functioning. The details of these strategies will be shared in a separate article.     

Clinical Assessment of Prementalizing Modes of Psychic Functioning in Children and Their Parents in the Context of Trauma

ABSTRACT

As psychoanalytic psychotherapy for children depends on their capacity to mentalize, it is essential to integrate this dimension in their psychological assessment. Mentalization refers to the capacity to identify and comprehend the mental states (feelings, thoughts and intentions) underlying and explaining one’s own behaviors and those of others. This vital ability, which develops during the first five or six years of life in the context of a secure parent-child attachment, is often impaired in children subjected to neglect and maltreatment. Based on rigorous and systematic clinical observations made in youth protection and child psychiatry services, the authors suggest that the children in these settings, along with their parents, frequently present a prementalizing mode of psychic functioning. Further, the authors propose operationalizing the teleological, psychic equivalence, and pretend modes as they might be observed in older children and their parents. To this end, they begin by identifying behaviors, attitudes, and relational patterns potentially linked to each of these modes within a theoretical framework. Next, they describe the characteristics of these children’s narratives, play, and artistic productions. Lastly, three clinical vignettes are used to illustrate how the prementalizing modes are manifested. The results of this clinical assessment can guide the choice of techniques to be used in child psychotherapy.