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SHORT-TERM RECOGNITION MEMORY AND LONG TERM RECALL OF SEQUENCES OF EVENTS IN NINE-MONTH-OLD INFANTS

Ashley Ross, Leslie Carver, and Chuck Nelson Ashley Ross

464 Commonwealth Ave #83 Boston., MA 022 15

Nine-month-olds’ recognition memory and recall were tested using the recording of Event-Related Potentials, and an elicited imitation procedure. Infants were first habituated to three familiar sequences. After a short delay of appro.ximately 16 minutes, ERPs were recorded on a visual recognition memory task. The infants returned a week later and were tested for recall of sequences. The electrophysiological results of recognition memory are not statistically significant, although visual inspection of the grand mean shows differential activity for the novel and familiar events. Also. this study has shown that infants can recall two-step sequences after a week delay. Fifty percent of infants replicated at least one of the sequences in correct temporal order. Overall, infants produced a significantly greater number of familiar target actions after the delay than during baseline.