“…However, early advertising and psychological research provide evidence dealing with the comparison of one-sided and two-sided messages regarding attitude change (e.g., Allen, 1991;Hovland, Lumsdaine, & Sheffield, 1949;Lawson, 1970;O'Keefe, 1999). Such research shows that messages including different perspectives seem to be more helpful (Schlosser, 2011) and credible (Kamins, Brand, Hoeke, & Moe, 1989) than one-sided messages.…”