Barbara Jean Rolls

Professor and Helen A. Guthrie Chair of Nutritional Sciences; Professor of Biobehavioral Health

Barbara Jean Rolls

Publication Tags

Food Meals Obesity Portion Size Weights And Measures Eating Weight Loss Preschool Children Energy Intake Vegetables Eating Behavior Child Satiation Research Ice Cream Preschool Child Fruit Cross Over Studies Body Weight Maintenance Snacks Energy Diet Questionnaire Lunch

Most Recent Publications

Eating rate and bite size were related to food intake across meals varying in portion size: A randomized crossover trial in adults

P Cunningham, Liane S. Roe, Kathleen Loralee Keller, A Hendriks-Hartensveld, Barbara J. Rolls, 2023, Appetite

Children's portion selection is predicted by food liking and is related to intake in response to increased portions.

Hanim Diktas, Kathleen Keller, Liane Roe, Barbara Rolls, 2022, Journal of Nutrition on p. 2287-2296

Does labelling a food as ‘light’ vs. ‘filling’ influence intake and sensory-specific satiation?

Anouk E.M. Hendriks-Hartensveld, Barbara J. Rolls, Paige M. Cunningham, Chantal Nederkoorn, Remco C. Havermans, 2022, Appetite

Construct validation of the Reasons Individuals Stop Eating Questionnaire (RISE-Q) and the development of the RISE-Q-15

Liam R. Chawner, Shihui Yu, Paige M. Cunningham, Barbara Rolls, Marion M. Hetherington, 2022, Appetite

Examining the Role of Food Form on Children's Self-Regulation of Energy Intake

Nicole Reigh, Barbara J. Rolls, Lori Anne Francis, Kristin A. Buss, John E. Hayes, Marion Hetherington, M Heatherington, Kameron Moding, Samantha Kling, Kathleen Keller, 2022, Frontiers in Nutrition

Switching between bites of food and sips of water is related to food intake across meals varying in portion size.

P Cunningham, L Roe, Kathleen Keller, Barbara Rolls, 2022, Appetite

Dietary energy density and its contribution to weight control

Barbara Rolls, 2022,

The relative importance of complexity, variety, and portion size in ice cream preference in Dutch and American participants

Anouk Hendriks-Hartensveld, Jennifer Brodock, John E. Hayes, Barbara J. Rolls, Kathleen Keller, Remco Havermans, 2022, Food Quality and Preference

Promoting vegetable intake in preschool children: Independent and combined effects of portion size and flavor enhancement

Hanim E. Diktas, Liane S. Roe, Kathleen L. Keller, Christine E. Sanchez, Barbara J. Rolls, 2021, Appetite

The Satiation Framework: Exploring processes that contribute to satiation

Paige M. Cunningham, Barbara J. Rolls, 2021, Physiology and Behavior

Most-Cited Papers

NIH working group report: Innovative research to improve maintenance of weight loss

Paul S. MacLean, Rena R. Wing, Terry Davidson, Leonard Epstein, Bret Goodpaster, Kevin D. Hall, Barry E. Levin, Michael G. Perri, Barbara J. Rolls, Michael Rosenbaum, Alexander J. Rothman, Donna Ryan, 2015, Obesity on p. 7-15

Myths, presumptions, and facts about obesity

Krista Casazza, Kevin R. Fontaine, Arne Astrup, Leann L. Birch, Andrew W. Brown, Michelle M. Bohan Brown, Nefertiti Durant, Gareth Dutton, E. Michael Foster, Steven B. Heymsfield, Kerry McIver, Tapan Mehta, Nir Menachemi, P. K. Newby, Russell Pate, Barbara J. Rolls, Bisakha Sen, Daniel L. Smith, Diana M. Thomas, David B. Allison, 2013, New England Journal of Medicine on p. 446-454

Weighing the Evidence of Common Beliefs in Obesity Research

Krista Casazza, Andrew Brown, Arne Astrup, Fredrik Bertz, Charles Baum, Michelle Bohan Brown, John Dawson, Nefertiti Durant, Gareth Dutton, David A. Fields, Kevin R. Fontaine, Steven Heymsfield, David Levitsky, Tapan Mehta, Nir Menachemi, P. K. Newby, Russell Pate, Hollie Raynor, Barbara J. Rolls, Bisakha Sen, Daniel L. Smith, Diana Thomas, Brian Wansink, David B. Allison, 2015, Critical Reviews in Food Science and Nutrition on p. 2014-2053

What is the role of portion control in weight management

B. J. Rolls, 2014, International Journal of Obesity on p. S1-S8

Serving a variety of vegetables and fruit as a snack increased intake in preschool children

Liane S. Roe, Jennifer S. Meengs, Leann L. Birch, Barbara J. Rolls, 2013, American Journal of Clinical Nutrition on p. 693-699

Dietary Management of Obesity: Cornerstones of Healthy Eating Patterns

Alissa D. Smethers, Barbara J. Rolls, 2018, Medical Clinics of North America on p. 107-124

Dietary energy density: Applying behavioural science to weight management

B. J. Rolls, 2017, Nutrition Bulletin on p. 246-253

Dietary energy density is associated with obesity and other biomarkers of chronic disease in US adults

Jacqueline A. Vernarelli, Diane C. Mitchell, Barbara J. Rolls, Terryl J. Hartman, 2014, Zeitschrift fur Ernahrungswissenschaft on p. 59-65

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

Dietary energy density and obesity: how consumption patterns differ by body weight status

Jacqueline A. Vernarelli, Diane C. Mitchell, Barbara J. Rolls, Terryl J. Hartman, 2018, Zeitschrift fur Ernahrungswissenschaft on p. 351-361

News Articles Featuring Barbara Jean Rolls

Jan 12, 2023

Best Weight-Loss Diets of 2022, Ranked

Winter is a pivotal season. It’s often a turning point for those who’ve been dragging their feet about making healthier choices, like moving more and eating healthier. That’s why, each year, U.S. News & World Report evaluates the most popular diets, and ranks them by category.

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Jan 06, 2023

Penn State professor’s diet named in the top 10 for overall best weight lost

Each year, the Volumetrics plan has consistently been recommended when people have looked to U.S. News & World Report rankings for advice on diets to improve their health or manage their weight.

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Jan 03, 2023

Volumetrics again ranked as one of the nation’s best diets

Each year, the Volumetrics plan has consistently been recommended when people have looked to U.S. News & World Report rankings for advice on diets to improve their health or manage their weight.

Full Article

Jan 05, 2022

WTAJ News at 6

This local TV news segment features Barbara Rolls, professor and Helen A. Guthrie Chair of Nutritional Sciences.

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Nov 26, 2021

Why You Always Have Room for Pie

One of the more curious phenomena of the Thanksgiving meal is how we can feel completely full, yet somehow always find room for dessert.

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Feb 17, 2021

Volumetrics Diet: lose weight by eating more

Food. We need it to survive. We consume it every day. Yet, sometimes food has the power to consume us.

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Oct 13, 2020

Tips To Be Fit: How important is water to trying to lose weight?

We have all heard that to curve your appetite just drink water to make your stomach feel full and you won’t eat as much. “Water doesn’t help you eat less,” says Barbara Rolls, a nutritionist at Penn State University. The body has different satiety points for food and water, and one doesn’t translate to the other. But eating foods high in water content could satisfy appetite and curb calorie consumption.

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Jun 27, 2020

Obesity: America’s number one export?

Food research by the U.S. military, particularly World War II, led to the creation of processed wartime rations. After the Allied victory, the world largely adopted America's processed-food diet, a key factor for the global obesity crisis.

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Jan 17, 2020

Penn State Professor’s Diet Plan Ranked Second-Best For Weight Loss

Penn State students who have a New Year’s Resolution involving eating healthier can follow an award-winning diet plan that was developed at Penn State.

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Jan 07, 2020

You can be full and have room for dessert

Those with a sweet tooth will be well versed in feeling full but having space for pudding. Good news for many, an expert claims “dessert stomach” is not only real, but part of our evolution.

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