Mark gained his first degree in psychology from Nottingham University, and his PhD in Experimental Psychology from Cambridge. For the past twenty years he has been researching and teaching at Middlesex University in North London. In his professional life he is a researcher who likes games, and is fascinated by the effects games and online activities have on thoughts, emotions, and our sense of self. In his personal life he is a gamer who is fascinated by the research questions which games and online behaviour raise. As an experimental psychologist and recent father, he strives to retain a dispassionate passion about all of this, following the data wherever they may lead.