Table 2.

Exclusion criteria and underlying rationale.

Exclusion criteria	Reasoning
Participation in other psychosocial or pharmacological treatments for the reduction or cessation of cannabis use	To avoid confounding treatment effects
Current pharmacologically treated psychiatric disease or any history of psychosis, schizophrenia, bipolar type I disorder, or significant current suicidal or homicidal thoughts	To avoid having subjects with these problems enter the study