This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
All of the following are done in behaviour therapy to increase a behaviour except - 
Select and explain. 
A. Punishment, B. Operant conditioning, C. Negative reinforcement, D. Reward
A: Punishment
Answer: A: Punishment 
Explanation: Punishment is used for decreasing an undesired behavior.
Reinforcement is used for increasing the desired behavior. Reinforcement may be positive (reward) or negative.
Operant conditioning can be used to increase as well as to decrease a behavior. Punishment and reinforcement are examples of operant conditioning.