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My research focuses primarily on substance use behavior. This is an interesting area to study self-regulation because it is a risk behavior with strong compelling (e.g., positive drug effects) and inhibiting (e.g., negative consequences) factors. In respect to self-regulation processes, I focus primarily on the role of affect, self-control, and personal goals. Much of my research examines factors that differentiate problematic from non-problematic use. In addition to my research in substance use, I am also interested in individual difference constructs such as affect lability and distress tolerance and have worked to develop and validate questionnaires that measure these dimensions. Finally, I have an interest in applied statistics and research methods. My research incorporates structural equation modeling, multi-level modeling, generalized linear models, and other techniques that are useful in understanding risk behavior. I have conducted experience sampling research using palmtop computers to further examine within-person associations with alcohol-related problems measured in situ.