This article reviews the positive and negative aspects of screen technology on cognitive development. It discusses the impact of video games and training programs on cognitive control and the adverse effects of screen technology on concentration. The positive side of the argument is supported by Anguera et al. (2013) and Edwards et al. (2010), who suggest that custom-designed video games and cognitive training programs can enhance cognitive control and reduce the risk of cognitive deficits. On the other hand, Owen et al. (2010), Katsnelson (2010), and Carr (2010) argue that screen technology is ineffective in improving cognitive tasks when untrained tasks are delivered to individuals. The article concludes that screen technology can be a useful source to improve cognitive performance if it is designed specifically to the cognitive needs of an individual.