“…Emotions are a critical component of effective learning and problem solving, especially when it comes to interacting with computer-based learning environments (CBLEs; multi-agent systems, intelligent tutoring systems, serious games; Azevedo & Aleven, 2013;Baker et al, 2012;Graesser, D'Mello, & Strain, 2014;Grafsgaard, Wiggins, Boyer, Wiebe, & Lester, 2014;Pekrun, 2011;Sabourin & Lester, 2014). In recent years there has been a surge in interdisciplinary research leading to a plethora of new approaches (including tools/devices and analytical techniques) to measure emotions (e.g., physiological sensors, automatic facial expression analysis software, concurrent state self-report measures; Alzoubi, Hussain, D'Mello, & Calvo, 2011;Baker et al, 2012;Grafsgaard et al, 2014;Harley et al, 2013).…”