Kristina Jackson presented a talk entitled "Alternate Representations of Subjective Effects: An Ecological Study of Simultaneous Alcohol and Marijuana Use" as part of the symposium "Novel Technologies and Integrated Approaches for Obtaining and Using Real-time Alcohol Consumption Data Collected in Naturalistic Environments" at the 19th Congress of the International Society for Biomedical Research on Alcoholism (ISBRA2018) in Kyoto Japan.