"Twenty dogs are initially presented with numerous CS-tone/US-footshock pairings. These dogs are then placed in a shuttle box, and movement from one side of the shuttle to the other terminates periodic presentations of the CS tone. No shocks are delivered in the shuttle box, but the dogs learn to move to the other side of the box to escape the tone. This is an example of "

An escape from fear procedure.

Explanation:

Escape from fear (EFF) is a phenomenon involving animals learning to perform an escape of a fear-eliciting conditioned stimulus (CS) in a situation where the escape response is paired with CS termination.

Escape from fear procedure however, comprises of traditionally condition a fear response, then the subjects are allowed to perform an instrumental response to avoid the Condition Stimulus-- This is mainly confirm predictions of two-process theory.

Hence, in this case, this is an example of an ESCAPE FROM FEAR PROCEDURE.

answer; sutherland-differential association;