مؤلف: H. Dan O Hair

Kevin Bradley Wright is Professor and Chair of the Department of Communication at Saint Louis University, USA. Lisa Sparks is Foster and Mary Mc Gaw Endowed Professor in Behavioral Sciences at Chapman University, USA, and Full Faculty Member of the NCI-designated Chao Family Comprehensive Cancer Center at the University of California, Irvine. H. Dan O”Hair is a Presidential Professor in the Department of Communication at the University of Oklahoma, USA.