Interfaces That Adapt like Humans. - Samuel Alexander; Abdolhossein Sarrafzadeh (APCHI, 2004)

Frown gives game away: affect sensitive systems for elementary mathematics. - Abdolhossein Sarrafzadeh; Chao Fan; Farhad Dadgostar; Samuel Alexander; Chris H. Messom (SMC (1), 2004)

Modeling Emotions from Non-verbal Behaviour in an Affective Tutoring System. - Samuel Alexander (User Modeling, 2005)

"How do you know that I don't understand?" A look at the future of intelligent tutoring systems. - Abdolhossein Sarrafzadeh; Samuel Alexander; Farhad Dadgostar; Chao Fan; Abbas Bigdeli (Comput. Hum. Behav., 2008)

Foundation of an affective tutoring system: learning how human tutors adapt to student emotion. - Samuel Alexander; Abdolhossein Sarrafzadeh; Stephen Hill (Int. J. Intell. Syst. Technol. Appl., 2008)

Affective Tutoring System for Better Learning. - Abdolhossein Sarrafzadeh; Samuel Alexander; Jamshid Shanbehzadeh (Int. J. Mob. Blended Learn., 2009)

The First-Order Syntax of Variadic Functions. - Samuel Alexander (Notre Dame J. Formal Log., 2013)

An axiomatic version of Fitch's paradox. - Samuel Alexander (Synth., 2013)

Guessing, Mind-Changing, and the Second Ambiguous Class. - Samuel Alexander (Notre Dame J. Formal Log., 2016)

Measuring Intelligence and Growth Rate: Variations on Hibbard's Intelligence Measure. - Samuel Alexander; Bill Hibbard (J. Artif. Gen. Intell., 2021)