"Give me a dozen of healthy children. I can make them doctors, judges, teachers, beggars and even thieves."
J.B. Watson
This famous quote, claiming the ability to shape any healthy infant into any profession through controlled environment and conditioning, is attributed to John B. Watson, the founder of behaviorism, reflecting his strong environmental determinism stance.
A child gets scared just on seeing a doctor because it is related to the doctor giving him an injection needle in his previous time. This is an example of:
Operant conditioning theory was propounded by: