“…For example, during 1980, 75% of articles published in three mainstream social psychology journals used only undergraduate research participants (Sears, 1986). However, research on the reactivity of this potentially unmotivated, cynical, or even resentful group (Brody, Gluck, & Aragon, 2000;Coulter, 1986), even apart from concerns regarding external validity (King, Bailly, & Moe, 2004;Sears, 1986;Ward, 1993), is sparse (Britton, 1979;Britton, Richardson, Smith, & Hamilton, 1983).…”