Neonates who were exposed to the same or different words on two consecutive days habituated to the sound on day one and recovered head turning on day two. Infants who heard the same word again on day two responded less well than infants exposed to the word for the first time on day two. (BC)

Findings confirmed that newborns turn toward laterally presented sounds, habituate with repetition, recover to novel sounds, and extend demonstrations of recovery to discrepant stimuli. Recovery was found to be a curvilinear function of degree of discrepancy. Newborns systematically turned away from redundant stimuli. (RH)