The Alliance for Nonprofit Management names the winner of the 2018 Terry McAdam Book Award: The Goldilocks Challenge: Right-Fit Evidence for the Social Sector, by Mary Kay Gugerty Professor of Nonprofit Managment, and IPA Founder, Dean Karlan. Awarded for its persuasiveness, readability, and applicability to the nonprofit sector, The Goldilocks Challenge delves into how to measure impact using the CART principles, by focusing on data that is, credible, actionable, responsible, and transportable.