The Kerplunk experiment was a stimulus and response experiment conducted on rats[1] and demonstrates the ability to turn voluntary motor responses into a conditioned response.[2] The purpose of the experiment was to get kinaesthetic feedback rather than guidance through external stimuli[3] through maze learning.[2] It was conducted in 1907 by John B. Watson and Harvey A. Carr[1][3] and was named after the sound the rat made after running into the end of the maze.[4] The study would help form a chain of responses, hypothesis proposed by Watson.[4]
The study's findings would later give credibility to stimulus and response interpretations that rewards work by strengthening the learned ability to show a habitual motor action in the presence of a particular stimulus.