A survey study on the associations between misperceptions on substance use by peers and health and academic outcomes in university students in North-West Europe

The basis of Social Norms Theory is that behavior is influenced by the perception of peer behavior. This implies that an overestimation (misperception) of substance use by peers would lead to an increase in personal substance use. It is hypothesized that the misperception of substance use by peers is negatively associated with health and academic performance, and that this association can be explained by an increase in personal substance use. The aim of this study is to investigate the associations of misperception of consumption of tobacco, alcohol, and recreational drugs with health and academic performance, and to test whether or not this association could be explained by substance use in a sample of university students