Julie Neiworth, Laurence McKinley Gould Professor of Natural Sciences and Psychology, and co-authors Ana Knighten (Cognitive Science, 2020) and Christopher Leppink-Shands (Psychology, 2019) published an article entitled “Is inferential reasoning a distinctly human cognitive feature? Testing reasoning in cotton top tamarins” in the Journal of Comparative Psychology (June 12, 2023, online version). This study used a 2-4 cups game common to testing human toddlers, apes, and now monkeys to see if they could infer where a treat is hidden based on partial information.