Psychology is the study of mind and behavior. It encompasses the biological influences, social pressures, and environmental factors that affect how people think, act, and feel.
Psychology encompasses in just a brief definition, but topics such as development, personality, thoughts, feelings, emotions, motivations, and social behaviors represent just a portion of what psychology seeks to understand, predict, and explain.

Psychology is a broad and diverse field that encompasses the study of human thought, behavior, development, personality, emotion, motivation, and more. As a result, some different subfields and specialty areas have emerged.
Some of the major areas of research in Psychology are
• Abnormal psychology is the study of abnormal behavior and psychopathology. This specialty area is focused on research and treatment of a variety of mental disorders and is linked to psychotherapy and clinical psychology.
• Biological psychology (biopsychology) studies how biological processes influence the mind and behavior. This area is closely linked to neuroscience and utilizes tools such as MRI and PET scans to look at brain injury or brain abnormalities.
• Developmental psychology is an area that looks at human growth and development over the lifespan including cognitive abilities, morality, social functioning, identity, and other life areas.
• Forensic psychology is an applied field focused on using psychological research and principles in the legal and criminal justice system.
• Industrial-organizational psychology is a field that uses psychological research to enhance work performance and select employees.
• Personality psychology focuses on understanding how personality develops as well as the patterns of thoughts, behaviors, and characteristics that make each individual unique.
• Social psychology focuses on group behavior, social influences on individual behavior, attitudes, prejudice, conformity, aggression, and related topics.
• Clinical psychology is focused on the assessment, diagnosis, and treatment of mental disorders.
• Cognitive psychology is the study of human thought processes including attention, memory, perception, decision-making, problem-solving, and language acquisition.
• Comparative psychology is the branch of psychology concerned with the study of animal behavior.

The most obvious application for psychology is in the field of mental health where psychologists use principles, research, and clinical findings to help clients manage and overcome symptoms of mental distress and psychological illness.

Psychology is both an applied and academic field that benefits both individuals and society as a whole. A large part of psychology is devoted to the diagnosis and treatment of mental health issues.
Some of the ways that psychology contributes to individuals and society include:
• Improving our understanding of why people behave as they do
• Understanding the different factors that can impact the human mind and behavior
• Understanding issues that impact health, daily life, and well-being
• Improving ergonomics to improve product design
• Creating safer and more efficient workspaces
• Helping motivate people to achieve their goals
• Improving productivity

Psychologists seek to understand many different aspects of the human mind and behavior, adding new knowledge to our understanding of how people think as well as developing practical applications that have an important impact on everyday human lives.