When Four-Year-Old Aislin Goes on Errands with Her Dad and Whines

Multiple Choice

When four-year-old Aislin goes on errands with her dad and whines for a treat, he stops somewhere and buys her a treat. But when she goes on errands with her mom, whining never ends up getting her a treat. Before long, Aislin only whines when she is going on errands with her dad. This is called:

A) extinction.
B) a phobia.
C) stimulus discrimination.
D) behaviourism.