Attention disorders are one of the major sources of poor school performance. This research project was designed to examine whether a Computer Assisted Instruction (CAI) approach would be successful in achieving higher rates of attention. In order to increase attention behaviour during school time, psychologically‐designed software was developed. The software, called “How to improve your mental skills,” consists of three games based on multimedia perception tasks. First, 155 elementary school children with an average age of 12.4 years, from Cadiz (Spain) School District, were evaluated with two attention tests, the Perception Differences Test (PDT), and the subtest Spatial of Primary Mental Aptitude (S‐PMA). Students were divided and balanced into one experimental and two control groups, according to their scores on the PDT. Then, 10 training sessions, of 25 minutes each, with the software “How to improve your mental skills”, were administered to the experimental group. Children from control group 1 played with a well‐known computer game during the same period of time, whereas children from control group 2 remained in the classroom with nonspecific training. Finally, after the experimental sessions, all the children were re‐evaluated with standard attention tests. Analyses of data included: (1) pre‐ and post‐training comparison of the experimental group scores on the PDT; (2) comparison of the experimental and control group 1 and 2 scores on the PDT and S‐PMA tests after training; and (3) gender and grade interference effects on attention behaviour. Results suggest that children from the experimental group significantly improved their attention behaviour as assessed by the PDT and S‐PMA tests after 10 training sessions with the specific computer software. No gender and grade interference effects on attention behaviour were found. Les désordres d'attention sont une des sources majeures de pauvre performance scolaire. Ce projet de recherche fut conçu pour examiner comment une approche d'enseignement assisté par ordinateur peut être efficace pour obtenir de plus hauts niveaux d'attention. Afin d'augmenter le comportement d'attention en classe, un programme informatique intitulé «Comment améliorer vos habiletés mentales» fut développé. Ce programme, basé sur la psychologie de la peception, consiste en trois jeux multimédias interactifs. L'étude s'est déroulée en trois phases. Premièrement, 155 enfants de L'école primaire, âgés en moyenne de 12,4 ans et issus du district scolaire de Cadiz, en Espagne, furent évalués à partir de deux tests d'attention: le Perception Differences Test (PDT) et le sous‐test Spatial of Primary Mental Aptitude (S‐PMA). Les élèves furent divisés en trois groupes, un groupe expérimental et deux groupes contrôle, en fonction de leur score au PDT. En deuxième lieu, le groupe expérimental fut soumis à 10 sessions d'entraînement, chacune d'une durée de 25 minutes, lors desquelles le programme informatique « Comment améliorer vos habiletés mentales » fut administré. Les enfants du premier groupe co...