This study is important for few reasons. First, this study focus on the difficulty of suppressing irrelevant information, executive function ability essential to leading a normal life. Special populations, and specifically people with schizophrenia, have difficulty suppressing irrelevant information, and a correlation has been noted between this characteristic and weak executive functioning capabilities. In this study we evaluate the potential of minimizing these difficulties through use of tDCS. This particular tool was chosen for the study because it is easy to use, non-invasive, and painless. Research has shown that tDCS stimulation of the DLPFC can improve performance in cognitive tasks, a result that has not been mirrored through use of medications. Second, in recognition of the heterogeneity of schizophrenic patients (substantiated by the fact that the success of other treatments varies from patient to patient), our study will perform tests to identify the preferred stimulation region, DLPFC left/right. The results will help determine more specifically if there is a degree of heterogeneity in terms of the region responsible for suppressing irrelevant information . Related to this, we will be able to assess the impact of stimulation, including whether or not stimulation benefits all schizophrenic patients or, alternatively, if there are unknown variables involved which determine the relative success of this treatment amongst individuals. In addition, we will be able to explore differences or correlations between healthy subjects' verbal abilities in relation to the various tests conducted, and assess the impact of these tests on healthy subjects' cognitive inhibition and working memory. Finally, this study is critical because if the treatment method proves to be successful, we would be able to extend this study to other populations that have difficulties with executive functioning, and in addition, to examine the effect of electrical stimulation on other cognitive abilities.