Photo of Suzanne H. Mitchell, Ph.D.

Suzanne H. Mitchell Ph.D.

  • (503) 494-1650

    Portland Campus

    • Professor of Behavioral Neuroscience School of Medicine
    • Professor of Psychiatry School of Medicine
    • Professor Oregon Institute of Occupational Health Sciences
    • Neuroscience Graduate Program School of Medicine
    • Behavioral Neuroscience Graduate Program School of Medicine

Suzanne H. Mitchell, Ph.D., is a tenured Professor at Oregon Health & Science University (OHSU), in the Department of Behavioral Neuroscience, with secondary appointments in Psychiatry and in the Oregon Institute for Occupational Health Science. 

She obtained her B.Sc. and M.Sc. degrees at the University of Hull, England and her Ph.D. at SUNY-Stony Brook, USA. Her dissertation focused on the economics of foraging behavior of rats, examining the role of the energetic costs and benefits in feeding decisions. During a post-doctoral fellowship at the University of Chicago, Dr. Mitchell worked with Harriet de Wit, Ph.D. using behavioral economics as an explanation for use of alcohol, nicotine/cigarettes, and amphetamine in humans.  During that time she also began collaborating with Jerry Richards, Ph.D. on delay discounting studies with rats. Following her postdoctoral work, Dr. Mitchell was an Assistant Professor at the University of New Hampshire, where she continued to apply behavioral economic models to recreational drug use. She moved her lab to OHSU in 2001 to devote more time to research, particularly looking into why drug users tend to be more impulsive than non-drug users using human and animal models. Most recently she has returned to her earlier interests in energetic costs and her research has increased its scope to include effort-related decision-making in clinical populations. She has received funding from various NIH institutes (NHLBI, NIAAA, NIDA and NIH), has served on several study sections as a member and as an ad hoc participant, and has received awards for education and mentoring.   

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Areas of interest

  • Determinants of risky and impulsive decision-making
  • Alcohol, nicotine and marijuana use
  • Neurobiology of choice
  • Behavioral genetics of impulsivity
  • Behavioral economics


  • M.Sc., University of Hull, Hull United Kingdom 1987
  • Ph.D., State University of New York at Stony Brook, Stony Brook New York United States 1992

Memberships and associations

  • Society for the Quantitative Analysis of Behavior
  • Society for NeuroEconomics
  • Society for Neuroscience
  • Association for Behavior Analysis International


  • "Functional MRI and delay discounting in patients infected with hepatitis C." Journal of neurovirology  In: , 01.01.2018.
  • "Heterogeneity in development of aspects of working memory predicts longitudinal attention deficit hyperactivity disorder symptom change." Journal of Abnormal Psychology  In: , Vol. 126, No. 6, 01.08.2017, p. 774-792.
  • "Devaluation of outcomes due to their cost : Extending discounting models beyond delay."   Nebraska Symposium on Motivation. Vol. 64 Springer New York LLC, 2017. p. 145-161 (Nebraska Symposium on Motivation; Vol. 64).
  • "Control of chronic excessive alcohol drinking by genetic manipulation of the Edinger-Westphal nucleus urocortin-1 neuropeptide system." Translational Psychiatry  In: , Vol. 7, No. 1, e1021, 01.01.2017.
  • "Quantifying impatience using models of delay discounting in substance use disorders." American Journal of Drug and Alcohol Abuse  In: , 19.12.2016, p. 1-3.
  • "Impulsivity and stress response in nondependent smokers (tobacco chippers) in comparison to heavy smokers and nonsmokers." Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco  In: , Vol. 18, No. 5, 01.05.2016, p. 547-556.
  • "Executive function deficits and glutamatergic protein alterations in a progressive 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine mouse model of Parkinson's disease." Journal of Neuroscience Research  In: , Vol. 93, No. 12, 01.12.2015, p. 1849-1864.
  • "Choice impulsivity : Definitions, measurement issues, and clinical implications." Personality Disorders: Theory, Research, and Treatment  In: , Vol. 6, No. 2, 01.04.2015, p. 182-198.
  • "Comparing hyperbolic, delay-amount sensitivity and present-bias models of delay discounting." Behavioural Processes  In: , Vol. 114, No. 1, 2015, p. 52-62.
  • "Large-scale topology and the default mode network in the mouse connectome." Proceedings of the National Academy of Sciences of the United States of America  In: , Vol. 111, No. 52, 30.12.2014, p. 18745-18750.
  • "Partial inactivation of nucleus accumbens core decreases delay discounting in rats without affecting sensitivity to delay or magnitude." Behavioural Brain Research  In: , Vol. 268, 15.07.2014, p. 159-168.
  • "Behavioral disinhibition in mice bred for high drinking in the dark (HDID) and HS controls increases following ethanol." Drug and Alcohol Dependence  In: , Vol. 136, No. 1, 01.03.2014, p. 149-152.
  • "Assessing delay discounting in mice." Current Protocols in Neuroscience  In: , No. SUPPL.66, 8.30, 2014.
  • "Mind-body practices : An alternative, drug-free treatment for smoking cessation? A systematic review of the literature." Drug and Alcohol Dependence  In: , Vol. 132, No. 3, 01.10.2013, p. 399-410.
  • "Sensitivity to reinforcer delay predicts ethanol's suppressant effects, but itself is unaffected by ethanol." Drug and Alcohol Dependence  In: , Vol. 132, No. 1-2, 01.09.2013, p. 22-28.
  • "Mice bred for severity of acute alcohol withdrawal respond differently in a Go/No-Go task." Alcoholism: Clinical and Experimental Research  In: , Vol. 37, No. 9, 09.2013, p. 1483-1490.
  • "Reward circuit connectivity relates to delay discounting in children with attention-deficit/hyperactivity disorder." European Neuropsychopharmacology  In: , Vol. 23, No. 1, 01.2013, p. 33-45.
  • "Acute Ethanol Administration and Reinforcer Magnitude Reduction Both Reduce Responding and Increase Response Latency in a Go/No-Go Task." Alcoholism: Clinical and Experimental Research  In: , Vol. 36, No. 10, 10.2012, p. 1803-1810.
  • "Acute ethanol does not always affect delay discounting in rats selected to prefer or avoid ethanol." Alcohol and Alcoholism  In: , Vol. 47, No. 5, ags059, 09.2012, p. 518-524.
  • "Behavioral inhibition in mice bred for high vs. low levels of methamphetamine consumption or sensitization." Psychopharmacology  In: , Vol. 222, No. 2, 07.2012, p. 353-365.
  • "Gender differences in factors associated with alcohol drinking : Delay discounting and perception of others' drinking." Drug and Alcohol Dependence  In: , Vol. 123, No. 1-3, 01.06.2012, p. 273-276.
  • "Risk, reward, and economic decision making in aging." Journals of Gerontology - Series B Psychological Sciences and Social Sciences  In: , Vol. 67 B, No. 3, 05.2012, p. 289-298.
  • "Differences in delay discounting between smokers and nonsmokers remain when both rewards are delayed." Psychopharmacology  In: , Vol. 219, No. 2, 01.2012, p. 549-562.
  • "Relation between time perspective and delay discounting : A literature review." Psychological Record  In: , Vol. 61, No. 4, 09.2011, p. 613-632.
  • "The genetic basis of delay discounting and its genetic relationship to alcohol dependence." Behavioural Processes  In: , Vol. 87, No. 1, 05.2011, p. 10-17.
  • "Delay discounting of reward in ADHD : Application in young children." Journal of Child Psychology and Psychiatry and Allied Disciplines  In: , Vol. 52, No. 3, 03.2011, p. 256-264.
  • "Discounting of delayed rewards and executive dysfunction in individuals infected with hepatitis C." Journal of Clinical and Experimental Neuropsychology  In: , Vol. 33, No. 2, 02.2011, p. 176-186.
  • "The role of antipsychotics in smoking and smoking cessation." CNS Drugs  In: , Vol. 25, No. 4, 2011, p. 299-315.
  • "Delay discounting behavior and white matter microstructure abnormalities in youth with a family history of alcoholism." Alcoholism: Clinical and Experimental Research  In: , Vol. 34, No. 9, 09.2010, p. 1590-1602.
  • "Behavioral and biological indicators of impulsivity in the development of alcohol use, problems, and disorders." Alcoholism: Clinical and Experimental Research  In: , Vol. 34, No. 8, 08.2010, p. 1334-1345.

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