The purpose of this research study is to investigate how chemicals in the cannabis plant influence mood and behavior in healthy adults (age 18-65) who have used cannabis within the past two months.

This study requires up to 9 study visits, which could range 5 to 8 hours in length starting at 9AM scheduled during the week (Monday – Friday) at the UCLA Westwood Medical Center. You can earn up to $1,000.

Your participation in the screening is voluntary. You do not have to answer any questions you do not wish to answer, and you may stop at any time.

If you qualify and decide to enroll in our study, the answers to the following questions will be kept with your confidential and secure research file. If you do not qualify for the study, or if you decide not to participate, the answers to these questions will be destroyed.

A decision whether to participate in the screening will not affect your relationship with UCLA and your responses will be completely confidential. Only UCLA study staff will be able to see your responses.