[1] Univ Tennessee, Sch Commun Studies, 293 Commun Bldg, Knoxville, TN 37996 USA
[2] Univ Tennessee, Dept Agr Leadership Educ & Commun, 293 Commun Bldg, Knoxville, TN 37996 USA
[3] James Madison Univ, Sch Commun Studies, Harrisonburg, VA USA
[4] Univ Tennessee, Sch Commun Studies, Knoxville, TN USA