Which statement best describes the results of Killeen’s experiments in which either a pigeon’s own pecking or a computer could turn off a light in an operant chamber?
a. Pigeons responded identically when they turned off the light as when a computer did it.
b. Pigeons correctly discriminated between instances in which they versus a computer turned off the light, but at barely above chance levels.
c. Pigeons correctly discriminated between instances in which they versus a computer turned off the light with 80-90 percent accuracy.
d. The pigeons never responded at all when a key light was turned off by the computer.
Ans: c
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