Part of this work was supported by grants from NIDA for marijuana studies (K01 DA021632-01A1 to FMF) and The Mind Research Network for control, nicotine, and obesity studies (Institutional Grant to FMF). FMF and DB are currently supported by NIDA (R01 DA030344-01 and F31 DA035039-01A1, respectively). DB and HA createdRunning Head: UNIQUE IMPULSE IN SUBSTANCE USE AND OVEREATING 2 some of the open source software used for analysis in this manuscript (TExPosition and TInPosition). The authors have no other declarations of interest. The American Journal of Drug and Alcohol Abus