Brown and jenkins (1968) trained pigeons to approach and eat grain whenever a food hopper was presented. after the birds were magazine-trained, they turned on a key light before the grain was delivered. the birds started to orient and move towards the lighted disk. eventually, the pigeons began to strike the key. this is called:
(a) shaping
(b) response induction
(c) autoshaping
(d) auto-sign-tracking

(C) autoshaping.

Explanation:

Autoshaping refers to a variety of experimental procedures used in classical conditioning. Autoshaping takes place when a reinforcer is paired with a stimulus. This stimulus is independent of the subject initially. This changes when the subject makes a response to the stimulus. From then on, the reinforcer is contingent on the response to the stimulus, thus bringing it under operant control.

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