Behavior and mental processes can be studied systematically. Psychology is the scientific study of mind and behavior, encompassing perception, cognition, emotion, motivation, development, social interaction, and mental disorders.

Research methods range from laboratory experiments and brain imaging to clinical observation and population surveys. Applied branches include clinical, counseling, educational, occupational, and health psychology. Clinical psychologists assess and treat mental health problems, often using evidence-based psychotherapies, but typically do not prescribe medication.

Psychological knowledge informs education, workplace design, public communication, and healthcare delivery. Understanding cognitive biases and behavioral drivers improves both individual therapy and population-level interventions. The boundary with psychiatry is collaborative rather than rigid.

• Scientific study of mind and behavior
• Includes research and multiple applied fields
• Clinical psychology focuses on assessment and therapy
• Informs health, education, and organizational practice