Pardos, Z. A., Baker, R. S., San Pedro, M., Gowda, S. M. and Gowda, S. M. (2014) “Affective States and State Tests: Investigating How Affect and Engagement during the School Year Predict End-of-Year Learning Outcomes”, Journal of Learning Analytics, 1(1), pp. 107-128. doi: 10.18608/jla.2014.11.6.