Abstract

Do you believe you can tell if people are sick with infectious diseases by looking at, listening to, or smelling them? Research on pathogen detection and avoidance suggests that perceivers respond with caution both to true signs of infection and to cues only heuristically associated with infection threat. But what do perceivers actually believe about the effectiveness and use of specific sensory modalities for infection detection? In several studies, U.S. participants reported perceptions of effectiveness and likelihood of using each of the major senses to identify infection threat in two types of targets: people and food. Results revealed prioritization of sight and sound with person targets and prioritization of sight and smell with food targets. These patterns appear consistent with the use of “safe senses” (avoidance of cues involving high perceived transmission risk). Beliefs about sensory use also varied depending on the specific feature being examined, with different patterns of sensory beliefs associated with evaluation of pathogenic danger than with evaluation of desirability and fit with normative standards. We discuss these lay beliefs in the context of recent calls for descriptive research in psychology as well as their implications for current and future work on the behavioral immune system.

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