Frontal Lobes and Ageing Effect on the P300 Component of the Auditory Event—Related Potentials

Dans cette étude, on a comparé le temps de latence et l'amplitude du P300 dans un échantillon de dix jeunes gens (moyenne d'âge: 20 ans) et de dix personnes plus âgées (moyenne d'âge: 68 ans). Comme prévu, le temps de latence augmente avec l'âge, mais le taux de croissance varie avec l'aire corticale prise en considération. L'amplitude baisse avec l'âge pour presque toutes les localisations cérébrales, sauf pour l'aire frontale où elle augmente. Nous avons aussi montré l'importance de ces découvertes pour la mesure du vieillissement du cerveau et pour le diagnostic des maladies cérébrales qui apparaissent avec l'âge.
In the present investigation we compared the latency and amplitude of the P300 in a sample of 10 young people (mean age = 20) and 10 elderly people (mean age = 68). As expected, latency increases with age, but this increasing rate varies depending on the cortical area analysed. The amplitude decreases with age over nearly all areas of the scalp, except for the frontal areas, where it increases. We also establish the importance of these findings in the evaluation of brain ageing and in the diagnosis of cerebral diseases that appear with age.     

Vocational Preference and P–O Fit: Reflections on Holland's Theory of Vocational Choice

It is 40 years since Holland first proposed his theory of vocational choice. In that period it is probably true to say that it has attracted more research than any other vocational guidance measure. This paper looks at the central concept in his theory (congruence) and other areas of vocational guidance, namely "fit". It also looks at current research issues relating to Holland's theory. Particular attention is paid to the research papers that examine the overlap between the six (RAISEC) personality types of Holland and the consensually accepted "Big Five" factor view of personality theorists. Finally a summary of the major theoretical, empirical, and methodological problems in the area is discussed.     

Do your Dark Side Traits Fit? Dysfunctional Personalities in Different Work Sectors

This study investigates differences in “dark side” traits between those in the public and private sectors, as well as between managers in three distinct industries. In all, 5,693 British adults were tested, roughly half of whom clearly worked in public sector jobs and half in the private sector. We also tested three groups of people (total 1,102) working in very different sectors: finance, insurance, and emergency services. They all completed the Hogan Development Survey (HDS; Hogan & Hogan, 1997), which is a measure of dysfunctional personality styles or potential management derailers. It has 11 dimensions and three higher order factors. Multivariate and univariate analyses of co‐variance (controlling for sex, age, and social desirability) and logistic regressions showed many significant differences, with private sector employees scoring higher on the factor Moving Against/Cluster B and lower on the factor Moving Away/Cluster A. The analysis of the three groups showed that those in the emergency services differed on most traits while Finance and Insurance industry personnel were very similar.     

Pocket money: A study of economic education

Despite the fact that some work had been done on children's conceptions of economic affairs, very little work appears to have been done on children's use of money. This study set out to examine sex, age and class differences in 7–12-year-old children's pocket money/allowances. Males and females, from middle- and working-class backgrounds in three age groups (7/8, 9/10, 11/12), completed a questionnaire which sought to establish such things as the amount of pocket money children received; other sources of income; whether they were required to work for their pocket money; whether and how they were encouraged to save it, etc. The results showed that, whereas there were few sex or class differences, there were a large number of significant age differences. The results are discussed in terms of the children's socialization and experience of money. Limitations of this research and suggestions for further work in this field are noted.     

The art of healing and the many worlds of time

This essay is a contribution to the understanding of the difficulties involved in integrating biomedicine and holistic medicine. The phenomenology of the perception of time as described by Mann, Siegler, and Osmond is postulated as underlying the different orientations to the practice of medicine.