Interpersonal accuracy, the ability to correctly assess other people’s states or traits, has been studied for over 60 years,
and many correlates have been uncovered. Furthermore, theorists routinely propose that having this kind of skill matters
for social and workplace outcomes. However, much of the empirical work concerned with interpersonal accuracy does
not directly address real-life outcomes for people who have, or lack, this skill. The present article summarizes literature
pointing to behavioral correlates of interpersonal accuracy and illustrates when and why interpersonal accuracy is
related to favorable interaction outcomes. There seems to be no specific behavior associated with high interpersonal
accuracy. Instead, interpersonal accuracy seems to foster behavioral adaptability, the ability to change one’s behavior
to match the expectations of the social interaction partner. This behavioral adaptability might be responsible for the
positive interaction outcomes related to interpersonal accuracy. We illustrate the mechanism and boundary conditions
underlying and framing how interpersonal accuracy affects interaction outcomes and discuss future directions in
research on interpersonal accuracy.