Children enjoy playing games. We can take advantage of this in the designs of computerized tasks that will engage their interest. These designs also serve to advance the study of chronometric measures, such as manual and saccadic reaction times and event related potentials, with young children. The goals of our method development are (1) to allow for comparable tasks across a wide variety of ages, (2) to make possible comparisons of child performance with data gathered in adult cognitive studies, and (3) to help to support inferences about the development of underlying mechanisms. We have designed a battery of computerized tasks in order to study the development of attention functions of alertness, orienting, and executive control during childhood. Our purpose is to describe each of these tasks in detail and present the results that have been obtained so far. The battery was tested using a sample of 5-year-old children as subjects.Posner and Petersen ( 1990) identified three attentional networks, each one having a unique function and a specified neuroanatomical basis. Posner and Raichle (1996) summarized the three attentional networks' localization in the brain, on the basis of behavioral, neuropsychological, and brain imaging data. ( I) The orienting network is responsible for focusing, disengaging, and shifting of spatial attention. These attentional operations involve a brain network including the posterior parietal lobes, the pulvinar nucleus ofthe thalamus and the superior colliculus. (2) The vigilance network is responsible for maintenance of an alert state. This function seems to involve the right lateralized parietal and right frontal cortical networks and also the locus coruleus. (3) The executive network is responsible for goal-directed behavior, target detection, error detection, conflict resolution and inhibition of automatic responses. The executive network seems to include the midline frontal areas including the anterior cingulate gyrus, supplementary motor area, and portions of the basal ganglia.---_ . _ ----------This work has been partially supported by a fellowship of the Yad Hanadiv-The Rothschild Foundation given to the first author. The programs described in this paper can be freely provided for research purposes. However. we are not able to provide support or to guarantee that they will work with different hardware equipment, especially since touch screens tend to differ. Correspondence should be addressed to A. Berger. Behavioral Science Department. Ben-Gurion University ofthe Negev, Beer-Sheva 84105, Israel (e-mail: andrea@bgumail.bgu.ac.il).Each attentional network has been studied in the literature using a particular paradigm that seems to serve as a marker task for that specific functional network. These paradigms are mostly based on manual responses and reaction time (RT) measurements. They have been developed for use with adult subjects (normal and neurological patient populations).All three networks of attention seem to undergo intense postnatal development (Ruff& Rothbart, 1996), ...