The Affective-Behaviour-Cognition (ABC) Learning Gains Project involves a collaboration between three UK universities - Open University, Oxford Brookes University, and University of Surrey. The project aims to develop models of learning gains by analyzing secondary data on affect, behavior, and cognition from the Open University's vast learning management system datasets. The project is divided into phases, with Phase 1 involving secondary data analysis led by the Open University and Phase 2 involving in-depth interviews and testing the validity of self-reported learning gains measures led by Oxford Brookes University and University of Surrey. Current progress includes obtaining ethics approval, collecting and analyzing demographic and academic performance data from Arts module AA100 taken by over 3000 students, and