“…Cacioppo, Priester, & Berntson, 1993;Tom, Pettersen, Lau, Burton, & Cook, 1991), their evaluation of strangers (Förster, 1998), their susceptibility to counterattitudinal messages (e.g. Cacioppo & Petty, 1979;Petty, Wells, Heesacker, & Cacioppo, 1983;Wells & Petty, 1980), and their memories and encoding of positive versus negative events (Förster & Strack, 1996;Förster & Strack, 1997;Förster & Strack, 1998;Riskind, 1983). Here is one example: participants who held a pen with their teeth to facilitate smiling rated cartoons as funnier than participants who held a pen with their protruding lips, which inhibited a smiling expression (Strack et al, 1988).…”