Effects of Exogenous and Endogenous Distracters on Immediate and Long-Term Recall in Toddlers.

We explored the role that exogenous and endogenous competitors for attention play in infants' abilities to encode and retain information over a 6-month period. Sixty-six children visited the laboratory at 15 months, and 32 returned for a second visit at 21 months. Children observed models of conventional- relation and enabling-relation action sequences.