Kathleen Keller
Professor of Nutritional Sciences
Most Recent Publications
High satiety: Evaluating determinants of energy compensation and intake in multiple preloading studies
Barbara J. Rolls, Liane S. Roe, Paige M. Cunningham, Kathleen L. Keller, Faris M. Zuraikat, 2025, Appetite
Food switching at a meal is positively associated with change in adiposity among children at high-familial risk for obesity
Nicholas V. Neuwald, Alaina Pearce, Paige M. Cunningham, Marissa N. Setzenfand, Lauren Koczwara, Barbara J. Rolls, Kathleen Loralee Keller, 2025, Appetite
Executive functioning is linked to feeding practices and food insecurity in Head Start mothers
N Skinner, A Moore, Kathleen Keller, S Anzman-Frasca, S Eagleton, J Williams, 2025, Appetite on p. 107952
Caregiver Feeding Practices in Guinea: Implications for Infant Dietary Diversity
T Schwendler, Kathleen Keller, L Jensen, M Na, M Fofana, M Daffé, H Sankhon, S Kodish, 2025, Maternal and Child Nutrition on p. e70017
Switching between foods is reliably associated with intake across eating events in children
N. V. Neuwald, Alaina Pearce, P. M. Cunningham, L. Koczwara, M. N. Setzenfand, B. J. Rolls, Kathleen Loralee Keller, 2024, Appetite
Child eating behaviors are consistently linked to intake across meals that vary in portion size
Alaina Pearce, N. V. Neuwald, J. S. Evans, O. Romano, B. J. Rolls, Kathleen Loralee Keller, 2024, Appetite
The Cerebellar Response to Visual Portion Size Cues Is Associated with the Portion Size Effect in Children
Bari Fuchs, Alaina Pearce, Barbara J. Rolls, Stephen J. Wilson, E Rose, C Geier, Hough Garavan, Kathleen L. Keller, 2024, Nutrients
Observational Methods in Studies of Infant and Young Child Feeding Practices in Low- and Middle-Income Countries: A Twenty-Year Retrospective Review
T Schwendler, Muzi Na, Kathleen Keller, L Jensen, Stephen R. Kodish, 2024, Nutrients on p. 288
Response to E Satter and B Lohse
Kathleen L. Keller, Alaina L. Pearce, Bari Fuchs, Barbara Jean Rolls, Stephen Wilson, Charles Geier, Emma Jane Rose, Hugh Garavan, 2024, Journal of Nutrition on p. 3854-3855
Does ‘portion size’ matter? Brain responses to food and non-food cues presented in varying amounts
Bari Fuchs, Alaina Pearce, Barbara J. Rolls, Stephen Wilson, E Rose, C Geier, Kathleen Keller, 2024, Appetite on p. 107289
Most-Cited Papers
Mechanisms of the portion size effect. What is known and where do we go from here?
Laural English, Marlou Lasschuijt, Kathleen L. Keller, 2015, Appetite on p. 39-49
A biopsychosocial model of sex differences in children’s eating behaviors
Kathleen L. Keller, Kling, Samantha M. R., Samantha M.R. Kling, Bari Fuchs, Alaina Pearce, Nicole Reigh, Travis Masterson, Kara Hickok, 2019, Nutrients
Double trouble: Portion size and energy density combine to increase preschool children's lunch intake
Samantha M.R. Kling, Liane S. Roe, Kathleen L. Keller, Barbara J. Rolls, 2016, Physiology and Behavior on p. 18-26
Variation in the Ability to Taste Bitter Thiourea Compounds: Implications for Food Acceptance, Dietary Intake, and Obesity Risk in Children
Kathleen Loralee Keller, Shana Adise, 2016, Annual Review of Nutrition on p. 157-182
Portion size has sustained effects over 5 days in preschool children: A randomized trial
Alissa D. Smethers, Liane S. Roe, Christine E. Sanchez, Faris M. Zuraikat, Kathleen L. Keller, Samantha M.R. Kling, Barbara J. Rolls, 2019, American Journal of Clinical Nutrition on p. 1361-1372
Is brain response to food rewards related to overeating? A test of the reward surfeit model of overeating in children
Shana Adise, Charles F. Geier, Nicole J. Roberts, Corey N. White, Kathleen L. Keller, 2018, Appetite on p. 167-179
Feeding Strategies Derived from Behavioral Economics and Psychology Can Increase Vegetable Intake in Children as Part of a Home-Based Intervention: Results of a Pilot Study
Terri L. Cravener, Haley Schlechter, Katharine L. Loeb, Cynthia Radnitz, Marlene Schwartz, Nancy Zucker, Stacey Finkelstein, Y. Claire Wang, Barbara J. Rolls, Kathleen L. Keller, 2015, Journal of the Academy of Nutrition and Dietetics on p. 1798-1807
The application of defaults to optimize parents' health-based choices for children
Katharine L. Loeb, Cynthia Radnitz, Kathleen Keller, Marlene B. Schwartz, Sue Marcus, Richard N. Pierson, Michael Shannon, Danielle DeLaurentis, 2017, Appetite on p. 368-375
Reduced neural response to food cues following exercise is accompanied by decreased energy intake in obese adolescents
S. N. Fearnbach, L. Silvert, K. L. Keller, P. M. Genin, B. Morio, B. Pereira, M. Duclos, Y. Boirie, D. Thivel, 2016, International Journal of Obesity on p. 77-83
Food portion size and energy density evoke different patterns of brain activation in children
Laural K. English, S. Nicole Fearnbach, Stephen J. Wilson, Jennifer O. Fisher, Jennifer S. Savage, Barbara J. Rolls, Kathleen L. Keller, 2017, American Journal of Clinical Nutrition on p. 295-305
News Articles Featuring Kathleen Keller
Oct 20, 2025
AI Counts Kids' Bites In Fight Against Obesity
A new AI-driven bite counter is in development to help counter childhood obesity – potentially even tracking kids while they eat and urging them to slow down.
Full Article
Oct 16, 2025
New AI tool detects bite rate to help prevent childhood obesity
Penn State researchers have developed an artificial intelligence model that can automatically count how quickly children take bites while eating, a breakthrough that could help identify eating habits linked to childhood obesity and make large-scale studies easier to conduct.
Full Article
Oct 15, 2025
Counting bites with AI might one day help prevent childhood obesity
An interdisciplinary team at Penn State published a pilot study demonstrating the potential of using AI to streamline research on obesity risk in children.
Full Article
Oct 04, 2024
USDA grant to support summer research experiences for undergraduates
The U.S. Department of Agriculture’s National Institute of Food and Agriculture recently announced an investment of $11.6 million in its Research and Extension Experiences for Undergraduates program. Among the recipients, Penn State’s College of Agricultural Sciences was awarded a $750,000 grant to support 50 undergraduate students in exploring career opportunities in food science and nutritional sciences.
Full Article