Rearrange the parts of the sentence in correct order.

P: This discipline is characterized by several concepts and approaches that are used by psychologists in understanding human behavior.

Q: The field of psychology can be described as a discipline that focuses on the study of mind and behavior.

R: Some of the most common psychological concepts that are used to modify or change an individual’s behavior include operant conditioning, positive and negative punishment, and positive and negative reinforcement.

S: Since psychology is a broad field, psychologists not only use these concepts and approaches but also conduct scientific research that enables them to understand human behavior.