Sonja Yokum, Ph.D.

Contact

Education & Training

B.A., 1996
Radboud University Nijmegen, Nijmegen, The Netherlands
Pedagogical and Educational Science

M.A., 1999
Radboud University Nijmegen, Nijmegen, The Netherlands
Pedagogy: Family and Behavior

Ph.D., 2006
University of Tilburg, Tilburg, The Netherlands
Psychology and Health

Postdoctoral Fellow, 2006-2008
University of Texas, Austin, TX/Oregon Research Institute, Eugene, OR
Neuroimaging and Obesity

Dr. Yokum has 12 years of experience conducting correlational and prospective studies on the correlates and predictors of eating pathology and obesity. She has 6 years of experience in fMRI paradigm design, acquisition, and analysis. In conjunction with Dr. Stice, she has conducted five preliminary fMRI studies. Two of those studies were prospective of which results were published in Science. These studies have identified several novel risk factors for future increases in eating disorders and body mass that have been replicated by independent labs. Dr. Yokum is currently Co-investigator for two NIH-funded large-scale prospective fMRI studies she is conducting in collaboration with Drs. Stice and Burger.  

Current Projects

Target Engagement of a Novel Dissonance-Based Treatment for DSM-5 Eating Disorders

PROJECT PERIOD

07/10/17 - 05/31/22

FUNDING AGENCY

National Institute of Mental Health (NIMH)

CURRENT STATUS

Active and Not Recruiting

TEAM

Principal Investigator
Eric Stice

Co-Investigators
Paul Rohde, Heather Shaw, Sonja Yokum

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Translational Neuroscience: Responsivity Training for Obesity Treatment

PROJECT PERIOD

04/15/17 - 03/31/22

FUNDING AGENCY

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

CURRENT STATUS

Active and Recruiting

TEAM

Principal Investigator
Eric Stice

Co-Investigators
Sonja Yokum

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Food Marketing Vulnerability and Increased Risk for Weight Gain in Adolescents

PROJECT PERIOD

05/05/15 - 02/28/18

FUNDING AGENCY

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

CURRENT STATUS

Active and Not Recruiting

TEAM

Principal Investigator
Sonja Yokum

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An fMRI Test of the Dynamic Vulnerability Model of Obesity: Risk Factor Plasticity

The Chocolate Study

PROJECT PERIOD

05/15/12 - 04/30/17

FUNDING AGENCY

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

CURRENT STATUS

Active and Not Recruiting

TEAM

Principal Investigator
Eric Stice

Co-Investigators
Sonja Yokum

Learn More →


Relation of Consummatory and Anticipatory Food Reward to Obesity

PROJECT PERIOD

08/01/09 - 07/31/16

FUNDING AGENCY

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

CURRENT STATUS

Completed

TEAM

Principal Investigator
Eric Stice

Co-Investigators
Sonja Yokum

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Response-Inhibition Training for Obesity Treatment

A pilot study

PROJECT PERIOD

12/12/14 - 07/13/16

FUNDING AGENCY

Internal ORI funding

CURRENT STATUS

Completed

TEAM

Principal Investigator
Eric Stice

Co-Investigators
Sonja Yokum

Learn More →

Publications

Winter, S. R., Yokum, S., Stice, E., Osipowicz, K., & Lowe, M. R. (2017). Elevated reward response to receipt of palatable food predicts future weight variability in healthy-weight adolescents. The American Journal of Clinical Nutrition. doi: 10.3945/ajcn.116.141143

Abstract or Full Text

Stice, E., Yokum, S., & Gau, J. M. (2017). Gymnemic acids lozenge reduces short-term consumption of high-sugar food: A placebo controlled experiment. Journal of Psychopharmacology, 269881117728541-269881117728541.

Abstract or Full Text

Yokum, S., & Stice, E. (2017). Initial body fat gain is related to brain volume changes in adolescents: A repeated-measures voxel-based morphometry study. Obesity (Silver Spring), 25, 401-407. doi: 10.1002/oby.21728

Abstract or Full Text

Stice, E., Yokum, S., Veling, H., Kemps, E., & Lawrence, N. S. (2017). Pilot test of a novel food response and attention training treatment for obesity: Brain imaging data suggest actions shape valuation. Behaviour Research and Therapy, 94, 60-70. doi:10.1016/j.brat.2017.04.007

Abstract or Full Text

Stice, E., Yokum, S., & Hume, D. J. (2017). Reply to DM Thomas and K Westerterp. The American Journal of Clinical Nutrition, 105, 541-541. doi: 10.3945/ajcn.116.143651

Abstract or Full Text

Stice, E., & Yokum, S. (2016). Gain in body fat is associated with increased striatal response to palatable food cues, whereas body fat stability is associated with decreased striatal response. The Journal of Neuroscience: The Official Journal of the Society for Neuroscience, 36, 6949-6956. doi: 10.1523/JNEUROSCI.4365-15.2016

Abstract or Full Text

Hume, D. J., Yokum, S., & Stice, E. (2016). Low energy intake plus low energy expenditure (low energy flux), not energy surfeit, predicts future body fat gain. The American Journal of Clinical Nutrition, 103, 1389-1396. doi: 10.3945/ajcn.115.127753

Abstract or Full Text

Stice, E., & Yokum, S. (2016). Neural vulnerability factors that increase risk for future weight gain. Psychological Bulletin, 142, 447-471. doi: 10.1037/bul0000044

Abstract or Full Text

Stice, E., Yokum, S., & Hume, D. J. (2016). Reply to DA Schoeller. The American Journal of Clinical Nutrition, 104, 1486-1487.

 

 

Abstract or Full Text

Stice, E., Yokum, S., Burger, K., Rohde, P., Shaw, H., & Gau, J. M. (2015). A pilot randomized trial of a cognitive reappraisal obesity prevention program. Physiology & Behavior, 138124-132. doi:10.1016/j.physbeh.2014.10.022

Abstract or Full Text

Stice, E., Yokum, S., & Waters, A. (2015). Dissonance-Based Eating Disorder Prevention Program Reduces Reward Region Response to Thin Models; How Actions Shape Valuation. Plos One, 10(12), e0144530. doi:10.1371/journal.pone.0144530

Abstract or Full Text

Yokum, S., Marti, C. N., Smolen, A., & Stice, E. (2015). Relation of the multilocus genetic composite reflecting high dopamine signaling capacity to future increases in BMI. Appetite, 8 738-45. doi:10.1016/j.appet.2014.12.202

Abstract or Full Text

Yokum, S., Marti, C. N., Smolen, A., & Stice, E. (2015). Research report: Relation of the multilocus genetic composite reflecting high dopamine signaling capacity to future increases in BMI. Appetite, 8 738-45. doi:10.1016/j.appet.2014.12.202

Abstract or Full Text

Stice, E., Burger, K. S., & Yokum, S. (2015). Reward Region Responsivity Predicts Future Weight Gain and Moderating Effects of the TaqIA Allele. The Journal Of Neuroscience: The Official Journal Of The Society For Neuroscience, 35, 10316-10324. doi: 10.1523/JNEUROSCI.3607-14.2015

Abstract or Full Text

Stice, E., & Yokum, S. (2014). Brain reward region responsivity of adolescents with and without parental substance use disorders. Psychology Of Addictive Behaviors: Journal Of The Society Of Psychologists In Addictive Behaviors, 28(3), 805-815. doi:10.1037/a0034460

Abstract or Full Text

Epstein, L., Yokum, S., Feda, D., & Stice, E. 2014). Food reinforcement and parental obesity predict future weight gain in non-obese adolescents. Appetite, 82, 138-142. doi: 10.1016/j.appet.2014.07.018

Abstract or Full Text

Gearhardt, A., Yokum, S., Stice, E., Harris, J., & Brownell, K. (2014). Relation of obesity to neural activation in response to food commercials. Social Cognitive And Affective Neuroscience, 9(7), 932-938. doi:10.1093/scan/nst059

Abstract or Full Text

Yokum, S., Gearhardt, A., Harris, J., Brownell, K., & Stice, E. (2014). Individual differences in striatum activity to food commercials predict weight gain in adolescents. Obesity (19307381), 22(12), 2544. doi:10.1002/oby.20882

Abstract or Full Text

Stice, E., Burger, K., & Yokum, S. (2013). Caloric deprivation increases responsivity of attention and reward brain regions to intake, anticipated intake, and images of palatable foods. Neuroimage, 67322-330. doi:10.1016/j.neuroimage.2012.11.028

Abstract or Full Text

Yokum, S., & Stice, E. (2013). Cognitive regulation of food craving: effects of three cognitive reappraisal strategies on neural response to palatable foods. International Journal Of Obesity (2005), 37(12), 1565-1570. doi:10.1038/ijo.2013.39

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Stice, E., Becker, C., & Yokum, S. (2013). Eating disorder prevention: current evidence-base and future directions. The International Journal Of Eating Disorders, 46(5), 478-485. doi:10.1002/eat.22105

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Stice, E., Yokum, S., & Burger, K. (2013). Elevated reward region responsivity predicts future substance use onset but not overweight/obesity onset. Biological Psychiatry, 73(9), 869-876. doi:10.1016/j.biopsych.2012.11.019

Abstract or Full Text

Stice, E., Burger, K., & Yokum, S. (2013). Relative ability of fat and sugar tastes to activate reward, gustatory, and somatosensory regions. The American Journal Of Clinical Nutrition

Abstract or Full Text

Stice E, Yokum S, Burger KS, Epstein L, Smolen. (2012). Multilocus Genetic Composite Reflecting Dopamine Signaling Capacity Predicts Reward Circuitry Responsivity. Journal of Neuroscience, 32. 1506-1512.

Abstract or Full Text

Yokum, S., Ng, J., & Stice, E. (2012). Relation of regional gray and white matter volumes to current BMI and future increases in BMI: a prospective MRI study. International Journal of Obesity, 36(5), 656–664. doi:10.1038/ijo.2011.175

Abstract or Full Text

Ng, J., Stice, E., Yokum, S., & Bohon, C. (2011). An fMRI study of obesity, food reward, and perceived caloric density. Does a low-fat label make food less appealing? Appetite, 57, 65-72.

Abstract or Full Text

Yokum, S., Ng, J., & Stice, E. (2011). Attentional bias to food images associated with elevated weight and future weight gain: an fMRI study. Obesity, 19, 1775-1783. PMCID: PMC Journal-In Process.

Stice, E., Yokum, S., Zald, D., & Dagher, A. (2011). Dopamine-based reward circuitry responsivity, genetics, and overeating. Current Topics in Behavioral Neuroscience, 6, 81-93. PMCID: PMC Journal-In Process.

Stice E, Yokum S, Burger KS, Epstein L, Small DM. (2011). Youth at Risk for Obesity Show Greater Activation of Striatal and Somatosensory Regions to Food. The Journal of Neuroscience, 31, 4360-4366.

Abstract or Full Text

Batterink, L., Yokum, S., & Stice, E. (2010). Body mass correlates inversely with inhibitory control in response to food among adolescent girls: an fMRI study. Neuroimage, 52, 1696-1703.

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Stice, E., Yokum, S., Bohon, C., Marti, N., & Smolen, A. (2010). Reward circuitry responsivity to food predicts future increases in body mass: moderating effects of DRD2 and DRD4. Neuroimage, 50(4), 1618-1625. doi:10.1016/j.neuroimage.2010.01.081

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Bohon, C., Stice, E., & Spoor, S. (2009). Female emotional eaters show abnormalities in consummatory and anticipatory food reward: A functional magnetic resonance imaging study. International Journal of Eating Disorders, 42, 210-221. Abstract

Stice, E., Spoor, S., Ng, J., & Zald, D. H. (2009). Relation of obesity to consummatory and anticipatory food reward. Physiology & Behavior, 97 (Proceedings from the 2008 Meeting of the Society for the Study of Ingestive Behavior SSIB 2008), 551-560. doi:10.1016/j.physbeh.2009.03.020

Abstract or Full Text

Experience

2010-
Research Associate
Oregon Research Institute, Eugene, OR

2008-2010
Research Associate
Department of Psychology, University of Texas, Austin, TX

2006-2008
Postdoctoral Research Fellow
Department of Psychology, University of Texas, Austin, TX

2002-2006
Research/Teaching Assistant
Department of Psychology and Health, Tilburg, The Netherlands

2001-2002
Research/Teaching Assistant
Department of Psychiatry, Rotterdam/Groningen, The Netherlands

1999-2001
Research/Teaching Assistant
Department of Pedagogical and Educational Science, Nijmegen, The Netherlands

1997-1999
Pedagogy: Family Behavior Intern
Department of Pedagogical and Educational Science, Nijmegen, The Netherlands