Marissa Burgermaster|Krzysztof Z. Gajos|Patricia Davidson|Lena Mamykina
The Role of Explanations in Casual Observational Learning about Nutrition
Columbia University Irving Medical Center|Harvard University Press|West Chester University|Columbia University
ubiquity internetbased nutrition information sharing indicates opportunity use social computing platforms promote nutrition literacy healthy nutritional choices conducted series experiments unpaid volunteers using online nutrition knowledge test test asked participants examine pairs photographed meals identify meals higher specific macronutrient eg carbohydrate answer participants received feedback accuracy answers viewed proportions peers choosing response received correctness feedback expert dietitian without expertgenerated explanations received correctness feedback crowdgenerated explanations results showed neither viewing peer responses correctness feedback alone improved learning however correctness feedback explanations ie modeling led significant learning gains significant difference explanations generated experts peers suggests importance explanations social computingbased casual learning nutrition potential scaling approach via crowdsourcing