In the first study, 3-, 6-, and 9- month-olds' behavior was assessed as a stranger broke contact to stare at the infant, to look at a wall, or to look at another person. Regardless of age and the reason contact was broken, the still-face reaction did not depend on the experimenter's intention. In the second study, 3-, 6-, and 9-month-olds interacted with their mother who broke contact to look away for no apparent reason or in the direction of a sound. Infants at all ages responded to the still-face episode, but not as a function of the underlying reason contact was broken. The findings suggest a primacy of interpersonal communication in the first year.