The Adolescent Brain Cognitive Development Study

The adolescent brain cognitive development study is an ongoing study with thousands of kids in the US. The data includes a question that says, how much time did you spend playing a video game today? So what defines a video game is left to the child and it's up to the child to remember how much time they spent on it which may or may not be particularly accurate. This is self reported, which means the margins for error get get a little fuzzier than normal.