Selective use of heuristic and systematic processing under defense motivation

Recent versions of the heuristic-systematic model predict that defense-motivated people will process heuristic cues selectively in two ways: (a) Heuristic cues will be subject to biased evaluation, and (b) heuristic, rather than systematic, processing will predominate when cues support, rather than threaten, defensive concerns. This experiment presented college students with a proposed mandatory essay-exam program, giving opinion poll results as a heuristic cue, followed either by arguments both for and against essay exams, or by no arguments. Cues congenial to students' preferred test type were judged as more reliable than hostile cues when no arguments were presented. Systematic processing mediated attitude judgment only when the cue was hostile; when the cue was congenial, attitude judgment was more influenced by vested interest. This influence may represent a low-effort heuristic processing strategy specific to defense motivation.