Introduction to Psychology: Foundations, History, and Major Domains

Introduction to Psychology

What is Psychology?

Psychology is the scientific study of mind and behavior. It seeks to understand how individuals think, feel, and act, both as individuals and within groups.

• Mind: Refers to mental processes such as thoughts, feelings, and motives.

• Behavior: Refers to observable actions of humans and animals.

• Scientific Study: Psychology uses empirical methods and systematic observation to draw conclusions about mental processes and behavior.

The Earliest Schools of Psychology

Structuralism and Functionalism

The first formal schools of psychology emerged in the late 19th and early 20th centuries, each with distinct approaches to understanding the mind.

School of Psychology	Description	Historically Important People
Structuralism	Focused on understanding the conscious experience through introspection (self-examination of one's own thoughts and feelings).	Wilhelm Wundt
Functionalism	Emphasized how mental activities helped an organism adapt to its environment.	William James

The History of Psychology: Major Theories

Psychoanalytic Theory (Freud)

Developed in the late 1800s and early 1900s, psychoanalytic theory focuses on the unconscious mind and childhood experiences.

• Theory of Personality: Involves the interaction between the id, ego, and superego.

• Theory of Development: Proposes psychosexual stages—oral, anal, phallic, latency, and genital.

• Freud's ideas remain influential but are considered controversial.

Gestalt Theory

Originating in the early 1900s, Gestalt psychology examines perception and how people organize visual elements into groups or unified wholes.

• Emphasizes that the whole of perception is more than the sum of its parts.

• Example: The 'invisible' triangle illusion demonstrates how the mind perceives shapes that are not actually present.

Behaviorism

Emerging in the early to mid-1900s, behaviorism focuses on observable and measurable behavior, rejecting introspection.

• Key concepts: Conditioning (classical and operant), reinforcement, and punishment.

• Operant conditioning chambers (Skinner boxes) are widely used in research.

Humanism

Developed in the 1950s, humanism emphasizes the innate potential for good in all humans and focuses on the whole person.

• Stresses self-actualization and personal growth.

• Key figures: Abraham Maslow (Maslow's Hierarchy of Needs) and Carl Rogers.

Cognitive Psychology

Arising in the mid-1900s, cognitive psychology studies internal mental processes using the scientific method.

• Rejects introspection as a primary method.

• Major research areas: perception, memory, categorization, knowledge representation, numerical cognition, language, and thinking.

Early Schools of Psychology: Still Active and Advanced

School of Psychology	Description	Earliest Period	Historically Important People
Psychodynamic Psychology	Focuses on the role of the unconscious and childhood experiences in affecting conscious behavior.	Very late 19th to Early 20th Century	Sigmund Freud, Erik Erikson
Behaviorism	Focuses on observing and controlling behavior through what is observable. Emphasizes learning and conditioning.	Early 20th Century	Ivan Pavlov, John B. Watson, B. F. Skinner
Cognitive Psychology	Focuses on mental processes and internal mental states.	1920s	Ulric Neisser, Noam Chomsky, Jean Piaget, Lev Vygotsky
Humanistic Psychology	Emphasizes the potential for good that is innate to all humans and rejects that psychology should focus only on behavior or unconscious drives.	1950s	Abraham Maslow, Carl Rogers

The Five Psychological Domains

Modern psychology is organized into five major domains, each focusing on different aspects of mind and behavior.

• Biological: Biopsychology, neuroscience, sensation, consciousness

• Cognitive: Perception, thinking, intelligence, memory

• Developmental: Learning, lifespan development

• Social & Personality: Social psychology, personality, emotion, motivation

• Mental & Physical Health: Abnormal psychology, therapies, stress, lifestyle, health

The Biological Domain

This domain explores how biological processes influence behavior and mental processes.

• Biopsychology: Studies the relationship between biology and behavior, including neuroscience and neuropsychology.

• Evolutionary Psychology: Examines how evolutionary processes shape behavior.

• Sensation and Perception: Investigates how sensory systems and psychological experiences of sensory information interact.

The Cognitive Domain

The cognitive domain focuses on mental processes and their relationship to experiences and actions.

• Studies language, cognition, memory, intelligence, and more.

• Explores how people perceive, think, and remember information.

The Developmental Domain

This domain examines psychological growth and change across the lifespan.

• Includes behavioral psychology and learning/conditioning (classical and operant conditioning).

• Focuses on stages and milestones of development from infancy through old age.

The Social and Personality Psychology Domain

This domain investigates how individuals' thoughts, feelings, and behaviors are influenced by social contexts and personality traits.

• Social Psychology: Studies how the presence of others affects individual behavior.

• Personality Psychology: Examines patterns of thoughts and behaviors that make individuals unique.

• Personality Trait: A consistent pattern of thought and behavior.

Five Factor Model of Personality

The Five Factor Model (Big Five) describes personality using five broad traits:

Trait	Low Score	High Score
Openness	Practical, conventional, prefers routine	Curious, wide range of interests, independent
Conscientiousness	Impulsive, disorganized	Hardworking, dependable, organized
Extraversion	Quiet, reserved, withdrawn	Outgoing, warm, seeks adventure
Agreeableness	Critical, uncooperative, suspicious	Helpful, trusting, empathetic
Neuroticism	Calm, even-tempered, secure	Anxious, unhappy, prone to negative emotions

The Mental and Physical Health Domain

This domain addresses psychological disorders, therapies, and the interaction of psychological and physical health.

• Abnormal Psychology: Studies abnormal thoughts and behaviors.

• Clinical Psychology: Focuses on diagnosing and treating psychological disorders.

• Health Psychology: Examines how biological, psychological, and sociocultural factors affect health.

Other Sub-fields in Psychology

• Industrial-Organizational Psychology: Applies psychological theories and research to workplace settings.

• Forensic Psychology: Applies psychology to the justice system.

• Sport and Exercise Psychology: Studies the interaction between mental/emotional factors and physical performance in sports and exercise.

Why Study Psychology?

• Develops critical thinking and communication skills.

• Enhances understanding of complex human behavior.

• Useful in a wide range of careers and fields.

• Opens doors to diverse career paths.

Psychology Careers

Psychology graduates can pursue a variety of careers. The following table lists top occupations employing graduates with a BA in Psychology:

Ranking	Occupation
1	Mid- and top-level management (executive, administrator)
2	Sales
3	Social work
4	Other management positions
5	Human resources (personnel, training)
6	Other administrative positions
7	Insurance, real estate, business
8	Marketing and sales
9	Healthcare (nurse, pharmacist, therapist)
10	Finance (accountant, auditor)

Quick Review

• What is psychology?

• Summarize the history of psychology

• Describe the early schools of psychology

• What are the approaches, fields, and subfields of contemporary psychology?

• What major concepts are part of each field?

• Why is studying psychology valuable?

• What possible career paths are there in psychology?