This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Psychiatry
Operant conditioning in which pain stimulus are given to a child for decreasing a ceain undesired behavior can be classified as: 
Select and explain. 
A. Positive reinforcement, B. Negative reinforcement, C. Punishment, D. Negotiation
C: Punishment
Answer: C: Punishment 
Explanation: Punishment is decrease in frequency of a behavior due to unpleasant consequences. Positive reinforcement - Frequency of behavior increases because it leads to positive consequences. Negative reinforcement- Frequency of behavior increases as it is followed by negative consequence.eg cleaning room to avoid scolding. All above three are types of operant conditioning.