Lab Members

Lab Director

Ellen Peters

Dr. Peters is a Distinguished Professor of Psychology at The Ohio State University. She conducts basic and applied research in judgment and decision making. In her research, Dr. Peters focuses on understanding the basic building blocks of human judgment and decision making and especially how affective, intuitive, and deliberative processes help people to make decisions in an increasingly complex world. She studies decision making as an interaction of characteristics of the decision situation and characteristics of the individual and is particularly interested in issues of number processing, affect and emotion, and adult aging in judgment and decision making. She is a Fellow of the American Association for the Advancement of Science (AAAS), the American Psychological Association, the Association for Psychological Science, and the Society of Experimental Psychology.  For more information about Dr. Peters, visit her faculty page. To view talks given by Dr. Peters, follow this link.

Affiliated Faculty

Hal Arkes

Hal R. Arkes is an Emeritus Professor of Psychology at The Ohio State University. He received his B.A. from Carleton College in 1967 and his Ph.D. in Psychology in 1971 from the University of Michigan. He served as a program director at the National Science Foundation in Washington during 1993-1995 and again in 1998-2000. In 1996-1997 he served as the President of the Society for Judgment and Decision Making. His research interests are in judgment and decision making, principally medical, legal, and economic decision making. His most prolific contribution is serving tens of thousands of meals as a cook in the US Army.

Research Associates

Martin Tusler

Martin is a Research Associate in the CAIDe Lab. He assists with experiment design, programming, analysis, and dissemination.




Brittany Shoots-Reinhard

Brittany is a Research Associate in the CAIDe Lab. She completed her B.S. in psychology and Ph.D. in social psychology from Ohio State. Her research interests include judgment and decision making, attitudes and persuasion, and motivation. Her current projects involve the antecedents and consequences of objective and subjective numeracy as well as factors influencing the efficacy of risk communications (e.g., tobacco warning labels).

Post-Doctoral Researchers

Pär Bjälkebring

Par’s research interest concerns how emotions and cognition influence decision-making. His current research centers on how emotions, numeracy, memory, and age influence decision-processes. He is currently working with different aspects of numeric competencies, how they influence decision-making, and how these might be improved. He received his Ph.D. in Psychology at the University of Gothenburg.

Graduate Students

Tyler MacDonald

Tyler graduated magna cum laude from the Ohio State University with a B.A. degree and research distinction in political science. His research examines the role of numeracy, motivated cognition, social factors of decision making, and affect on consumer and financial decisions. These interests are particularly focused in the areas of poverty, inequality, and prosocial behavior.

Michael Silverstein

Michael graduated magna cum laude from Muhlenberg College with a B.A. and honors in Psychology. His research interests include numeracy, affect, motivated cognition, risk literacy, health, and how irrelevant factors influence judgments and decisions.



Research Staff

Hayley Svensson

Hayley is a fourth-year undergraduate student majoring in Psychology with a minor in Organizational Communication. She is a member of instrumental music groups on campus and is also a Research Assistant in a Developmental Psychology lab at OSU. Hayley’s research interests include incentives, numeracy, and motivation. Hayley plans to attend graduate school and study Social Psychology, specifically motivation.

Undergraduate Research Assistants

Shivangi Bhardwaj

Shivangi is a fourth-year undergraduate student majoring in Psychology. She is conducting an independent research project in the CAIDE Lab with the aid of other lab members. She plans on attending graduate school for Health Psychology.



 Elli Billisits

Elli is a fourth-year undergraduate student majoring in Psychology. She is interested in Social Psychology and plans on furthering her education into graduate school to study Industrial/Organizational Psychology and Human Resources. In addition, Elli is an HR student assistant for the Office of the Chief Information Officer and the Office of Distance Education and eLearning.


Molly Hawkins

Molly is a second-year undergraduate student majoring in Psychology. She is interested in clinical and counseling psychology and plans to go to graduate school for Mental Health Counseling. She is a member of The Boo Radley Society on campus and is currently an Disaster Casework Intern for The Red Cross.


 Jeremy Huang

Jeremy is a third-year undergraduate student majoring in psychology and data analytics.  His areas of interest include Human-Computer Interaction and User Experience Research.  After graduation, he plans to attend graduate school pursing a master’s degree in Information Science.


Shuchun Lai

Shuchun is a fifth-year undergraduate student majoring in psychology and philosophy, with a minor in statistics. She is very interested in social psychology, especially the area of decision making, and she plans to attend graduate school to obtain a Ph.D. Decision Psychology. She is also a member of another psychology lab at OSU.

Kayla Malone

Kayla is a second-year undergraduate student majoring in Health Sciences and double minoring in Clinical Psychology & Individual Differences and Health and Society.  After graduation, she plans to attend graduate school for a physicians assistant program. She is aspiring to be either a Clinical Psychologist, Physician Assistant, or an Anesthesiologist Physician Assistant.

Sara Pierce

Sara is a third-year undergraduate student double majoring in Psychology and Classics. After graduating, she plans on going to graduate school to study either cognitive psychology or psycho-linguistics. Her research interests include how numeracy impacts decision-making processes.


Joey Wong

Joey is a fourth-year undergraduate student with a major in Psychology and minor in Communication Technology. He hopes to branch out into the User Experience (UX) field by utilizing his Cognitive Psychology-focused background. He is interested in human decision making and is excited to broaden his knowledge in this field.

High School Researchers

Caroline Rueter

Caroline is a senior at Mount Notre Dame High School in Reading, Ohio. She is working on an independent project under the supervision of Dr. Shoots-Reinhard, focusing on subjective numeracy in parents and their children. In college, Caroline plans to study educational and abnormal psychology with a focus on public policy, in the hopes of applying what she learns to a career in politics.

Former Post-Doctoral Researchers

Breann Erford

Breann received her M.A. in quantitative psychology and Ph.D. in decision psychology from the Ohio State University. Her research interests include decision making, numeracy, and predecisional biases. Her current work is focused on the effects of objective and subjective numeracy on health-related judgments and decisions.


Abigail Evans

Abby completed her B.A. in psychology at Indiana University and her Ph.D. in social psychology at the University of Iowa. Her research interests lie at the intersection of attitude change, health behavior, and decision making. Her current research investigates how people understand, interpret, and utilize information within the contexts of tobacco regulation, cancer prevention, and medical decision making.

Dana Chesney

Dana Chesney (Ph.D.) researches understanding of numbers and number concepts in adults and children. She is specifically interested in how this understanding impacts decision making and life outcomes, and how this understanding might be improved. She completed her undergraduate work at the University of Virginia, and her doctoral work at Rutgers University, New Brunswick, with Rochel Gelman. She went on to work with Nicole McNeil at the University of Notre Dame and Ellen Peters here at The Ohio State University. Dana is now working as an Assistant Professor at St. John’s University.

Former Graduate Students

Mary Kate Tompkins

Mary Kate graduated magna cum laude from The Ohio State University with a B.S. degree and research distinction in psychology. Her research interests include numeracy, choice architecture, affect, and health.  She has since received her Ph.D. from The Ohio State University.


David Falco

David received his M.A. in Biological and Experimental Psychology, B.S. in Applied Statistics, and B.A. in Psychology from American University.  His research interests include numeracy, consumer behavior, behavioral economics, and memory.



Jaime Gilden

Jaime graduated summa cum laude from Montana State University with a B.S. degree and honors distinction in psychology. Her research interests include numeracy, risk perceptions, and environmental decision making.



Louise Meilleur

Louise completed her B.A.A Honors at Kwantlen Polytechnic University in Vancouver Canada. Her research interests are in medical decision making and public policy.  She is currently the Director of Health Surveillance for the First Nations Health Authority (FNHA) in British Columbia, Canada.



Dan Schley

Dan completed his B.A. in economics at the University of California-San Diego. His research interests center around numerical cognition and the subjective judgments made about objective numbers. Much of his research is focused around differentiating sources of information (learning about probabilities through experience as opposed to description), the subjective values of the differing sources and how the information is processed intuitively and deliberately. In addition, he is also interested in repeated decisions, economic decision models, behavioral game theory, and probabilistic inference. Dan has since received his Ph.D. from The Ohio State University and is currently an Assistant Professor of Marketing at Erasmus University.

Aleksandr Sinayev

Aleksandr graduated magna cum laude from Binghamton University with degrees in mathematics and psychology and a minor in economics. He has research experience in memory, cognition and vocational behavior. Currently, he is interested in how various formats (such as frames and reference classes) influence judgment and decision making, including risk perception. He is also interested in developing mathematical and statistical models to understand areas of judgment and decision making that have traditionally resisted this sort of measurement (e.g., affect). For more information on Aleks, visit his website.

Former Visiting Scholars

Kevin Tiede

Kevin Tiede graduated from the University of Koblenz-Landau, Germany, with a B.S. degree in psychology and is currently a master’s student at the University of Koblenz-Landau. His research interests include numeracy and judgment and decision making.



Former Research Staff

Joe Macisco

Joe graduated magna cum laude with a B.A. in psychology and minors in neuroscience and criminology from The Ohio State University.  His research interests include judgment and decision making, games, and health.



Former Undergraduate Research Assistants

Leayh Abel, Kali Amoah, Kate Caldwell, Quijia Chen, Gillian Davis, Anna Dewan, Colin Gloudemans, Ashley Greivenkamp, Colleen Fazio, Alexis Froning, Caitlin Hand, Olivia Hardtke, Samantha Kassirer, Lindsay Keeran, Nick Larbes, Kelsey Lewis, Katie Martin, Madison Maskalunas, Tomas Moreno-Vasquez, Niraj Patel, Ariana Quintana, Kara Ruder, Matt Scalia, Elizabeth Seguin, Diandra Showe, Janell, Verdream, David Weiner