There is a surge of studies confirming that old age spares the ability to bind in visual working memory (VWM) multiple features within singular object representations. Furthermore, it has been suggested that such ability may also be independent of the cultural background of the assessed individual. However, this evidence has been gathered with tasks that use arbitrary bindings of unfamiliar features. Whether age spares memory binding functions when the memoranda are features of everyday life objects remains less well explored. The present study investigated the influence of age, memory delay, and education, on conjunctive binding functions responsible for representing everyday items in VWM. We asked 32 healthy young and 41 healthy older adults to perform a memory binding task. During the task, participants saw visual arrays of objects, colours, or coloured objects presented for 6 s. Immediately after they were asked either to select the objects or the colours that were presented during the study display from larger sets of objects or colours, or to recombine them by selecting from such sets the objects and their corresponding colours. This procedure was repeated immediately after but this time providing a 30 s unfiled delay. We manipulated familiarity by presenting congruent and incongruent object-colour pairings. The results showed that the ability to bind intrinsic features in VWM does not decline with age even when these features belong to everyday items and form novel or well-known associations. Such preserved memory binding abilities held across memory delays. The impact of feature congruency on item-recognition appears to be greater in older than in younger adults. This suggests that long-term memory (LTM) supports binding functions carried out in VWM for familiar everyday items and older adults still benefit from this LTM support. We have expanded the evidence supporting the lack of age effects on VWM binding functions to new feature and object domains (i.e., everyday items). We have confirmed that education does not negatively impact on such ability at old age. Such results have important implications for the selection of culturally unbiased tests to screen for abnormal ageing trajectories.
Introducción. La hipótesis del marcador somático establece que las emociones participan del proceso cognitivo de la toma de decisiones guiando la conducta y dotando a la experiencia de una cualidad positiva o negativa que permite la adaptación del individuo al medio social. Objetivo. Evaluar la toma de decisiones mediante el desempeño en la tarea Iowa Gambling Task (IGT) en niños y niñas que cumplían con uno o dos criterios según el DSM-IV para desarrollar el Trastorno Disocial de la Conducta (TDC). Método. La muestra estuvo conformada por 81 menores de edad (48 que cumplían con uno o dos criterios del DSM-IV y 33 sin alteraciones de comportamiento). Se utilizó la Escala Muldimensional de la Conducta, el SNAP IV y el Checklist para TDC como instrumentos de tamizaje para su selección, posteriormente se realizó la evaluación con la versión computarizada de la IGT Resultados. Se dan diferencias estadísticamente significativas entre el grupo estudio y de comparación para la selección de las barajas desventajosas B durante la ejecución de la tarea. Los menores en riesgo presentaron un desempeño menor para la prueba general de toma de decisiones. Discusión. Los resultados indican la presencia de alteraciones en los procesos de toma de decisiones de los menores que presentan uno o dos criterios clínicos para desarrollar el TDC. Esto puede ser debido a una dificultad para el procesamiento de las contingencias a las decisiones desventajosas, lo cual les impide generar estados somáticos en función de las posibles consecuencias futuras.
ABSTRACT. COVID-19 is an infectious disease declared by the World Health Organization as a public health emergency of international concern. Objective: The objective of this article was to determine the physical, psychological, and social health conditions and mood of COVID-19 quarantine in adults with mild cognitive impairment. Methods: The sample consisted of 129 participants, most of them were healthy, but some have mild cognitive impairment. The data were collected with a questionnaire and the Yesavage Geriatric Depression Scale applied through phone calls from April to June 2020. Results: Statistically significant differences were found in the changes in sleep habits of the healthy participants (p=0.018). Intragroup comparisons of the Yesavage Geriatric Depression Scale in healthy participants were significant (p=0.010) and at the intergroup level before and after quarantine showed significant differences in pretest scores (p=0.003). Conclusions: Social isolation had a negative psychological effect on sleep habits, depressed mood, and physical health, mainly in healthy participants.
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