Cornwell, J.F.M. (James)

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    The role of target-specific shared reality in interpersonal interactions and protective health behaviours
    (John Wiley & Sons, 2024) Schmalbach, B. (Bjarne); Higgins, E.T. (Tory); Rossignac-Milon, M. (Maya); Cornwell, J.F.M. (James); Echterhoff, G. (Gerald); Keller, V.N. (Victor)
    Shared reality—the experience of sharing common inner states (e.g. feelings, beliefs) with other people about a given topic or target—is a ubiquitous human experience. With research on the construct of shared reality burgeoning in various domains, we examined a fundamental, yet understudied topic: the role of experiencing shared reality about a target in real-time conversations and real-world contexts. Across five studies conducted in various contexts (total N = 973), we developed a measure of target-specific shared reality (SR-T) and examined its role in interpersonal interactions and protective health behaviours. In our initial Studies (1a-2), we developed a measure of SR-T and establish psychometric, construct and criterion validity. In Study 3, we established predictive validity by investigating the link between SR-T and important interpersonal interaction constructs (e.g. interpersonal rapport and epistemic trust in the partner). In Study 4 (preregistered), SR-T moderated the effect of close others’ attitudes on vaccination and precautionary behaviours against COVID-19 during the Omicron-variant peak (2022). Our findings suggest that the experience of SR-T, assessed with a valid measure, is linked to important dimensions of interpersonal interactions and health decisions in the real world.