Voucher rewards do not reduce cannabis use in people with psychosis
The use of positive reinforcement in the form of supermarket vouchers to shape behaviour makes no difference in the frequency of cannabis use or relapse rates in those with early psychosis.
The CIRCLE trial included 551 young adults who were being treated in an ‘Early Intervention in Psychosis’ service, including 9 in Oxfordshire and 2 in Berkshire.
Visit the NIHR Dissemination Centre website for more information.
