A Canadian study published last month in the journal Drug and Alcohol Review looked for differences between people who consume cannabis socially versus those who consume cannabis solo, and found:
Compared to individuals reporting their most recent cannabis-using occasion as social, solitary users were significantly more likely to screen positive for psychosis, endorse more symptoms of cannabis abuse/dependence, report using cannabis to cope, and use cannabis on more days within the previous 30 days.
In its own words, the study “sought to examine the extent to which the social context of cannabis use is related to patterns of use and associated harms.”