Hilary Barth, associate professor of psychology, is a co-author of a paper titled, “How feedback improves children’s numerical estimation,” published in the August 2016 issue of the journal Psychonomic Bulletin and Review. Barth’s co-authors are former members of her Cognitive Development Lab, which include Shipra Kanjlia ’11 and Jennifer Garcia ’10, former lab managers Jessica Taggart and Elizabeth Chase, and former postdoctoral fellow Emily Slusser, PhD. The paper explores one theory of children’s cognitive development that there are fundamental developmental changes in the ways children think about numbers. This theory says numbers are arranged on a different mental scale for younger…