Wearable sensor metric for fidgeting: screen engagement rather than interest causes NIMI of wrists and ankles. - Joe D. Chalkley; Thomas T. Ranji; Carina E. I. Westling; Nachiappan Chockalingam; Harry J. Witchel (ECCE, 2017)

A trigger-substrate model for smiling during an automated formative quiz: engagement is the substrate, not frustration. - Harry J. Witchel; Harry L. Claxton; Daisy C. Holmes; Thomas T. Ranji; Joe D. Chalkley; Carlos P. Santos; Carina E. I. Westling; Michel F. Valstar; Matt Celuszak; Patrick Fagan (ECCE, 2018)

Toward emotional recognition during HCI using marker-based automated video tracking. - Ulrik Söderström; Songyu Li; Harry L. Claxton; Daisy C. Holmes; Thomas T. Ranji; Carlos P. Santos; Carina E. I. Westling; Harry J. Witchel (ECCE, 2019)