Research Showing That Ducklings Who Had Been Denied Access to Their

Multiple Choice

Research showing that ducklings who had been denied access to their mother's call but who did hear the call of a chicken actually preferred to chicken-call after they were hatched, providing empirical evidence in support of the _____ approach to development.

A) operant conditioning
B) epigenetic psychobiological systems
C) sociocultural
D) cognitive-developmental