[Effect of stimulus opening size in global dominance with orientation classification task].

The aims of this study is to examine whether global dominance depends on the opening size of the stimulus with concentric hierarchical figures and orientation classification task and to determine the role of the salience of global opening and its coincidence with vertical symmetry axis of context. In the first experiment, participants had to indicate the opening direction of stimuli, which were open-left and open-right figures. Three openings were included: 10, 25 and 50% of the total circle perimeter.

Hemispheric differences for global and local processing: effect of stimulus size and sparsity.

The present experiment was designed to assess the hemispheric differences for global and local processing in healthy participants under different conditions of stimuli visibility, by means of varying the size and sparsity. Three different sizes and three different matrixes of hierarchical stimuli were introduced. Stimuli consisted of incomplete squares with one side missing.

[Psychological profile of potential organ donors and non-organ donors].

The aim of this research was to analyse the psychological profile of potential organ donors and potential non-organ donors, from a sample of people with qualifications lower than a Bachelor's degree. The variables examined were prosocial behaviour, the scales of the Constructive Thinking Inventory, and the dimensions of personality of the Big-Five Questionnaire. The results show that non-organ donors have a lower score in prosocial behaviour, are less efficient in their actions, with a tendency for less thought before acting, and they tend to be prejudiced.