Reports three experiments investigating the relationship of the suffix effect and echoic memory. Shows that echoic memory persists for at least 20 seconds. Illustrates that echoic memory can be used to establish a more effective nonechoic memory. Shows that recency recall is higher to auditory than to visual items. (PMJ)

An investigation of a saturation advertising campaign to acquaint the public with changes in radio wavelengths showed that repeated presentation of material does not lead to learning unless appropriate encoding occurs. Such encoding will occur when subjects are allowed to use previously acquired learning strategies. (PMJ)