Which of the following best defines psychology as a scientific discipline?

• A. The study of behavior and mental processes
• B. The study of historical events and their impact on society
• C. The study of the structure and function of the brain only
• D. The study of physical health and nutrition

Answer: (A)

Verified step by step guidance

1. Step 1: Understand that psychology is a scientific discipline focused on studying aspects related to humans and animals.
2. Step 2: Recognize that psychology involves both observable behaviors and internal mental processes such as thoughts, emotions, and perceptions.
3. Step 3: Differentiate psychology from other fields by noting that it is not limited to just brain structure or physical health, but includes a broader study of behavior and mental functions.
4. Step 4: Review the options and identify which one encompasses both behavior and mental processes, as this aligns with the comprehensive scope of psychology.
5. Step 5: Conclude that the best definition of psychology as a scientific discipline is 'The study of behavior and mental processes' because it captures the full range of psychological inquiry.