Skinner's invention of the operant chamber and cumulative recorder marked an advance over Thorndike's apparatus in that
A) subjects could now live in the experimental situation.
B) the subjects did not have to be handled too often; they could also emit responses freely.
C) the speed of escaping the puzzle box could be more accurately recorded.
D) the response rate could be measured and figured into a formula that calculates statistical significance.
E) researchers could now have complete control of the operant response.

Question

Quizplus · Accepted Answer

Skinner's operant chamber allowed subjects to emit responses freely without frequent handling, and the cumulative recorder enabled continuous recording of responses, marking an improvement over Thorndike's apparatus.

Skinner's Invention of the Operant Chamber and Cumulative Recorder Marked