ABSTRACT
Individuals have been found to “project” their own substance use onto perceptions of their friends’ substance use. This study explores whether companionship and conflict relate to incorrect perceptions of a friend’s heavy alcohol and marijuana use after controlling for the behavior of the respondent and friend. Mixed models demonstrate that having higher levels of companionship, but not conflict, with a friend result in significantly higher perceptual levels of the friend’s heavy alcohol and marijuana use. While beneficial for the friendship, higher levels of companionship may result in a person overestimating the heavy alcohol and marijuana use of a friend.