The accuracy of estimation of short time intervals was studied in old institutionalized and young college male and female participants as a function of three levels of audible background metronome rate (0, 40 and 90 beats/min). The main effects of metronome and interval length, as well as the age by metronome rate interaction, were significant. Unlike the young participants, the time judgments of the older participants were significantly and systematically determined by metronome rate. These results are consistent with the notion of increased field-dependence among older persons and suggest that their greater social conformity and their inability to ignore irrelevant stimuli might also be explicable in the same theoretical terms.