Bringing Empathy into Play: On the Effects of Empathy in Violent and Nonviolent Video Games. - Christian Happ; André Melzer; Georges Steffgen (ICEC, 2011)

Superman vs. BAD Man? The Effects of Empathy and Game Character in Violent Video Games. - Christian Happ; André Melzer; Georges Steffgen (Cyberpsychology Behav. Soc. Netw., 2013)

Trick with treat - Reciprocity increases the willingness to communicate personal data. - Christian Happ; André Melzer; Georges Steffgen (Comput. Hum. Behav., 2016)