Stage 1. An animal was exposed to a tone that was followed by a shock to its feet until it learned to freeze when the tone was presented (classical conditioning). Stage 2. The tone is presented with no shock many times. The animal does not freeze when the tone is presented. Stage 3. After a week, when the tone is presented the animal freezes. All stages occur in the same cage. What processes are described in Stages 2 and 3 of the experiment?