Children exposed to high levels of screen time before age 2 showed changes in brain development that were linked to slower decision-making and increased anxiety by their teenage years, according to new research by Asst. Prof. Tan Ai Peng and her team from A*STAR Institute for Human Development and Potential (A*STAR IHDP) and National University of Singapore (NUS) Yong Loo Lin School of Medicine, using data from the Growing Up in Singapore Towards Healthy Outcomes (GUSTO) cohort.