Inclusion criteria | Reasoning |
Informed consent via the Webform | To ensure adequate knowledge of the procedures and declare their consent |
Minimal age of 18 years | To ensure a minimum age of participation |
Cannabis use at least once weekly over the last 30 days | To include participants with less than daily cannabis use, increase the validity of results |
At least once-weekly Internet access and a valid e-mail address | To ensure at least some access to the intervention |
Good command of the Spanish language | To ensure that participants will be able to understand the information provided |
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, substance use disorder, or significant current suicidal or homicidal thoughts | To avoid having subjects with these problems enter the study, since they could hinder the treatment’s effectiveness |