On the Concept of Psychological

The idea that certain mental phenomena (e.g. emotions, depression, anxiety) can represent risk factors for certain somatic diseases runs through common thinking on the subject and through a large part of biomedical science. This idea still lies at the focus of the research tradition in psychosomatic medicine and in certain interdisciplinary approaches that followed it, such as psychoneuroimmunology. Nevertheless, the inclusion in the scientific literature of specifically mental phenomena in the list of risk factors pertaining to a specific pathological condition would seem, to say the least, problematic when not completely absent, unlike what happens for certain behavioural factors, such as smoking, sedentary life, and alcohol abuse. It is also significant that insurance companies and health and welfare services do not pay for interventions and treatment for states of anxiety, disorders of mood and of the personality, alexithymia and stress reduction, as means of prevention or treatment of somatic diseases, as instead they do for the treatment of tobacco addiction. However, as I shall endeavour to argue here, there are numerous and well grounded reasons why this different consideration of psychic conditions compared with behaviours is valid and must be maintained in the evaluation of pathogenetic risk factors.     

Web usability evaluation with screen reader users: implementation of the partial concurrent thinking aloud technique

A verbal protocol technique, adopted for a web usability evaluation, requires that the users are able to perform a double task: surfing and talking. Nevertheless, when blind users surf by using a screen reader and talk about the way they interact with the computer, the evaluation is influenced by a structural interference: users are forced to think aloud and listen to the screen reader at the same time. The aim of this study is to build up a verbal protocol technique for samples of visual impaired users in order to overcome the limits of concurrent and retrospective protocols. The technique we improved, called partial concurrent thinking aloud (PCTA), integrates a modified set of concurrent verbalization and retrospective analysis. One group of 6 blind users and another group of 6 sighted users evaluated the usability of a website using PCTA. By estimating the number of necessary users by the means of an asymptotic test, it was found out that the two groups had an equivalent ability of identifying usability problems, both over 80%. The result suggests that PCTA, while respecting the properties of classic verbal protocols, also allows to overcome the structural interference and the limits of concurrent and retrospective protocols when used with screen reader users. In this way, PCTA reduces the efficiency difference of usability evaluation between blind and sighted users.     

Burnout and self-perceptions of physical fitness in a sample of Italian physical education teachers

This study examined the relations of physical education teachers' burnout with some individual variables, including teachers' self-perceived physical fitness and the perceived influence of personal fitness on teaching. Participants were 219 Italian physical education teachers in secondary school. Demographic and professional information, ratings of self-perception of physical condition, and the Italian version of the Maslach Burnout Inventory were recorded. Compared to the data of a normative sample, average scores on the three dimensions of the Maslach Burnout Inventory (Emotional Exhaustion, Depersonalisation, and Reduced Personal Accomplishment) were found. There were statistically significant associations among Reduced Personal Accomplishment, the self-perception of physical fitness, and the perception of the influence of personal fitness on teaching. Women reported scores on Emotional Exhaustion and Reduced Personal Accomplishment indicative of greater severity than men. No significant differences appeared to be related to the years of teaching. Recommendations for further studies are discussed.     

A technique for the measurement of aggressive behavior in mice

This paper describes an apparatus permitting the study of aggressive behavior in mice. Aggressive behavior may be spontaneous or induced by means of an electric shock delivered through the tail.     

Cooperation increases bottlenose dolphins’ (Tursiops truncatus) social affiliation

Animal Cognition - Dolphins live in a fission–fusion society, where strong social bonds and alliances can last for decades. However, the mechanism that allows dolphins to form such strong...     

A Duality for Involutive Bisemilattices

Studia Logica - We establish a duality between the category of involutive bisemilattices and the category of semilattice inverse systems of Stone spaces, using Stone duality from one side and the...