Food Coma Is Real: The Effect of Digestive Fatigue on Adolescents' Cognitive Performance

Arbeitspapier

Food coma, also known as postprandial somnolence, is a commonly cited reason for experiencing reduced alertness during mid-afternoon worldwide. By using exogenous variation in the timing of tests and, hence, by extension, plausibly exogenous variation in the temporal distance between an individual's last meal and the time of test, we examine the causal impact of postprandial somnolence on cognitive capacities. Analyzing novel time use data on ~ 4,600 Indian adolescents and young adults, we find that testing within an hour after a meal reduces test-takers' scores on English, native language, math, and Raven's tests by 8, 8, 8, and 16 percent, respectively, compared to test-takers who took the tests more than an hour after their meal. We further find that the negative effect of postprandial somnolence on cognition operates through increased feelings of fatigue and depletion of cognitive resources that become more pronounced while dealing with more challenging test questions.

Object Details

• Language: Englisch

References and Relationships

• Bibliographic citation: Series: IZA Discussion Papers ; No. 16909

Classification and Topics

• Classification: Wirtschaft ; Health Behavior ; Health: Government Policy; Regulation; Public Health ; Analysis of Education ; Human Capital; Skills; Occupational Choice; Labor Productivity
• Subject: post-meal fatigue ; cognitive skills ; low-stakes tests ; India ; adolescents

Contributors, Places and Time

• Event: Geistige Schöpfung
• (who): Hervé, Justine ; Mani, Subha ; Behrman, Jere R. ; Laxminarayan, Ramanan ; Nandi, Arindam
• Event: Veröffentlichung
• (who): Institute of Labor Economics (IZA)
• (where): Bonn
• (when): 2024

Further information

• Last update: 10.03.2025, 11:42 AM CET