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As previous work has highlighted the significance of the cannabinoid receptor 1 (CNR1) and fatty acid amide hydrolase (FAAH) genes with respect to cannabis dependence (CD), this study sought to characterize the neural mechanisms that underlie these genetic effects. To this end, we collected DNA samples and fMRI data using a cue-elicited craving paradigm in(More)
Craving is one of the primary behavioral components of drug addiction, and cue-elicited craving is an especially powerful form of this construct. While cue-elicited craving and its underlying neurobiological mechanisms have been extensively studied with respect to alcohol and other drugs of abuse, the same cannot be said for marijuana. Cue-elicited craving(More)
CONTEXT The rising rate of overweight and obese individuals among developing countries despite focused efforts on prevention and treatment underscores not only the need to better define the physiological factors that contribute to weight problems, but also the need to elucidate the neurobiological mechanisms of the self-regulatory failure over eating that(More)
In spite of evidence suggesting two possible mechanisms related to drug-seeking behavior, namely reward-seeking and harm avoidance, much of the addiction literature has focused largely on positive incentivization mechanisms associated with addiction. In this study, we examined the contributing neural mechanisms of avoidance of an aversive state to(More)
Posttraumatic stress disorder (PTSD) and alcohol/substance use disorder (A/SUD) are frequently comorbid. Comorbidity is associated with poorer psychological, functional, and treatment outcomes than either disorder alone. This review outlines biological mechanisms that are potentially involved in the development and maintenance of comorbid PTSD and A/SUD(More)
Guilt related to combat trauma is highly prevalent among veterans returning from Iraq and Afghanistan. Trauma-related guilt has been associated with increased risk for posttraumatic psychopathology and poorer response to treatment. Trauma Informed Guilt Reduction (TrIGR) therapy is a 4-module cognitive-behavioral psychotherapy designed to reduce guilt(More)
Despite high prevalence and concerning associated problems, little effort has been made to conceptualize the construct of posttraumatic guilt. This investigation examined the theoretical model of trauma-related guilt proposed by Kubany and Watson (2003). This model hypothesizes that emotional and physical distress related to trauma memories partially(More)
Both pharmacotherapy and psychotherapy are effective treatments for posttraumatic stress disorder (PTSD). Better understanding factors that are associated with engaging in these different treatment options may improve treatment utilization and outcomes. This issue is especially important among veterans returning from Iraq and Afghanistan, given high rates(More)
OBJECTIVES Exposure-based psychotherapies for posttraumatic stress disorder (PTSD) are effective for many, but not all patients. It is important to determine for whom these treatments work and to examine predictors of success. METHOD An 8-week modified prolonged exposure (PE) treatment, including components of behavioral activation and reducing the number(More)
According to recent estimates, over 1 million Operation Iraqi Freedom/Operation Enduring Freedom (OIF/OEF) Veterans are utilizing the post-9/11 GI Bill to pursue higher education. Data collected by the Department of Defense suggests that greater than 17% of returning Veterans may suffer from mental and physical health disorders, which can negatively affect(More)