Niklas Ravaja Timo Saari Marko Turpeinen Jari Laarni Mikko Salminen Matias Kivikangas Spatial Presence and Emotions during Video Game Playing: Does It Matter with Whom You Play? 381-392 2006 15 Presence 4 http://dx.doi.org/10.1162/pres.15.4.381 db/journals/presence/presence15.html#RavajaSTLSK06