Gregory Russell Samanez-Larkin

Gregory Russell Samanez-Larkin

Assistant Professor of Psychology and Neuroscience

Education & Training

  • Ph.D., Stanford University 2010

  • M.A., Stanford University 2008


Research in our lab examines how individual and age differences in motivation and cognition influence decision making across the life span. Our research is at the intersection of a number of subfields within psychology, neuroscience, and economics including human development, affective science, cognitive neuroscience, behavioral economics, and finance. We use a combination of behavioral and neuroimaging techniques ranging from detailed measurement of functional brain activity (fMRI) and neuroreceptors (PET) in the laboratory to experience sampling in everyday life.

Seaman, Kendra L., et al. “Differential regional decline in dopamine receptor availability across adulthood: Linear and nonlinear effects of age..” Human Brain Mapping, vol. 40, no. 10, July 2019, pp. 3125–38. Epmc, doi:10.1002/hbm.24585. Full Text

Smith, Christopher T., et al. “Partial-volume correction increases estimated dopamine D2-like receptor binding potential and reduces adult age differences..” Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism, vol. 39, no. 5, May 2019, pp. 822–33. Epmc, doi:10.1177/0271678X17737693. Full Text

Karrer, Teresa M., et al. “Reduced serotonin receptors and transporters in normal aging adults: a meta-analysis of PET and SPECT imaging studies..” Neurobiology of Aging, vol. 80, Apr. 2019, pp. 1–10. Epmc, doi:10.1016/j.neurobiolaging.2019.03.021. Full Text

Holland, Catherine A. C., et al. “Emotion identification across adulthood using the Dynamic FACES database of emotional expressions in younger, middle aged, and older adults..” Cognition & Emotion, vol. 33, no. 2, Mar. 2019, pp. 245–57. Epmc, doi:10.1080/02699931.2018.1445981. Full Text

Smith, Christopher T., et al. “Lack of consistent sex differences in D-amphetamine-induced dopamine release measured with [18F]fallypride PET..” Psychopharmacology, vol. 236, no. 2, Feb. 2019, pp. 581–90. Epmc, doi:10.1007/s00213-018-5083-5. Full Text

Löckenhoff, Corinna E., et al. “Preferences for Temporal Sequences of Real Outcomes Differ Across Domains but do not Vary by Age..” The Journals of Gerontology. Series B, Psychological Sciences and Social Sciences, vol. 74, no. 3, Feb. 2019, pp. 430–39. Epmc, doi:10.1093/geronb/gbx094. Full Text

Castrellon, Jaime J., et al. “Individual Differences in Dopamine Are Associated with Reward Discounting in Clinical Groups But Not in Healthy Adults..” The Journal of Neuroscience : The Official Journal of the Society for Neuroscience, vol. 39, no. 2, Jan. 2019, pp. 321–32. Epmc, doi:10.1523/JNEUROSCI.1984-18.2018. Full Text

Smith, Christopher T., et al. “Ventral striatal dopamine transporter availability is associated with lower trait motor impulsivity in healthy adults..” Translational Psychiatry, vol. 8, no. 1, Dec. 2018. Epmc, doi:10.1038/s41398-018-0328-y. Full Text


Samanez-Larkin, G. R. “Chapter 3 - Decision Neuroscience and Aging.” Aging and Decision Making: Empirical and Applied Perspectives, 2015, pp. 41–60. Scopus, doi:10.1016/B978-0-12-417148-0.00003-0. Full Text

Sofia Beas, B., et al. “Chapter 2 - Modeling Cost-Benefit Decision Making in Aged Rodents.” Aging and Decision Making: Empirical and Applied Perspectives, 2015, pp. 17–40. Scopus, doi:10.1016/B978-0-12-417148-0.00002-9. Full Text

Samanez-Larkin, GR, Hagen, TA, and Weiner, DJ. "Financial decision making across adulthood." The Psychological Science of Money. April 1, 2014. 121-135. Full Text

Knutson, B, and Samanez-Larkin, GR. "Brain, Decision, and Debt." A Debtor World: Interdisciplinary Perspectives on Debt. January 24, 2013. Full Text

Selected Grants

Effects of Aging on Episodic Memory-Dependent Decision Making awarded by National Institutes of Health (Co-Principal Investigator). 2018 to 2023

Short Courses in Neuroeconomics and Social Neuroscience awarded by National Institutes of Health (Principal Investigator). 2017 to 2021

Forming Science-Industry Partnerships to Link Everyday Behaviors to Well-Being awarded by Stanford University (Principal Investigator). 2017 to 2021

Research Network on Decision Neuroscience and Aging awarded by National Institutes of Health (Principal Investigator). 2016 to 2021

Dopaminergic Neuromodulation of Decision Making in Young and Middle-Aged Adults awarded by Vanderbilt University (Principal Investigator). 2017 to 2019

NEUROMODULATION OF MOTIVATED COGNITION AND DECISION MAKING ACROSS ADULTHOOD awarded by National Institutes of Health (Principal Investigator). 2012 to 2018