Discrediting in a Message Board Forum: The Effects of Social Support and Attacks on Expertise and Trustworthiness. - Michael G. Hughes; Jennifer A. Griffith; Thomas A. Zeni; Matthew L. Arsenault; Olivia D. Cooper; Genevieve Johnson; Jay H. Hardy; Shane Connelly; Michael D. Mumford (J. Comput. Mediat. Commun., 2014)