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🥸Intro to Psychology

Key Psychological Theories

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Why This Matters

Psychology isn't just a collection of names and dates—it's a toolkit for understanding why humans think, feel, and behave the way they do. On the AP exam, you're being tested on your ability to apply these theories to real-world scenarios, distinguish between competing explanations for the same behavior, and recognize how different perspectives approach questions about learning, development, and mental processes. The theories you'll encounter here represent fundamentally different assumptions about human nature: Are we shaped by our environment? Driven by unconscious forces? Active constructors of our own reality?

These frameworks fall into distinct camps based on what they emphasize: observable behavior vs. internal mental processes, environmental influence vs. innate potential, and conscious vs. unconscious motivation. Don't just memorize who developed each theory—know what mechanism each one proposes and when you'd use it to explain a given phenomenon. FRQs love asking you to apply multiple perspectives to the same scenario, so understanding the core logic of each approach will serve you far better than rote recall.


Learning Through Association and Consequence

These theories share a common foundation: behavior is shaped by environmental experiences. The key difference lies in whether learning happens through passive association or active response to consequences.

Classical Conditioning

  • Learning through association—a neutral stimulus becomes meaningful after repeated pairing with a stimulus that naturally triggers a response
  • Pavlov's dogs demonstrated the core mechanism: the bell (CS) predicted food (UCS), eventually triggering salivation (CR) on its own
  • Emotional conditioning explains phobias, taste aversions, and why therapy techniques like systematic desensitization work by creating new associations

Operant Conditioning

  • Behavior shaped by consequences—Skinner showed that voluntary actions increase or decrease based on what follows them
  • Four key mechanisms: positive reinforcement (add pleasant), negative reinforcement (remove unpleasant), positive punishment (add unpleasant), negative punishment (remove pleasant)
  • Reinforcement schedules determine how resistant behaviors are to extinction—variable ratio schedules produce the most persistent responding

Behaviorism

  • Only observable behavior matters—Watson and Skinner rejected introspection, arguing psychology should study measurable responses to stimuli
  • Environment over biology—the "blank slate" view suggests nearly any behavior can be conditioned given the right environmental setup
  • Foundation for applied behavior analysis and systematic approaches to behavior modification in clinical and educational settings

Compare: Classical vs. Operant Conditioning—both involve learning from environment, but classical pairs stimuli (involuntary responses) while operant uses consequences (voluntary behavior). If an FRQ describes someone developing a fear response, think classical; if it's about increasing study habits through rewards, think operant.


The Mind as Active Processor

These theories reject the behaviorist focus on observable behavior alone, arguing that what happens between stimulus and response—the cognitive processes—is where the real action is.

Cognitive Theory

  • Mental processes drive behavior—perception, memory, attention, and problem-solving actively shape how we interpret and respond to the world
  • Schemas are mental frameworks that organize information; when they don't match reality, we experience cognitive dissonance or develop cognitive distortions
  • Cognitive-behavioral therapy (CBT) applies this principle: change maladaptive thought patterns to change feelings and behaviors

Information Processing Theory

  • Mind-as-computer metaphor—information flows through stages of encoding, storage, and retrieval, with limited capacity at each step
  • Memory systems include sensory memory, short-term/working memory, and long-term memory, each with different characteristics and limitations
  • Cognitive load explains why multitasking impairs learning—working memory can only handle so much at once

Social Learning Theory

  • Learning through observation—Bandura's Bobo doll studies showed children imitate aggressive models without direct reinforcement
  • Cognitive mediation distinguishes this from pure behaviorism: attention, retention, reproduction, and motivation all affect whether observed behavior is performed
  • Self-efficacy (belief in your ability to succeed) and reciprocal determinism (behavior, cognition, and environment all influence each other) are key testable concepts

Compare: Behaviorism vs. Cognitive Theory—behaviorists say stimulus → response; cognitivists say stimulus → mental processing → response. The same reward might work differently for two people based on how they interpret it.


The Unconscious and Inner Experience

These perspectives look inward, examining forces we may not be consciously aware of and the subjective experience of being human.

Psychoanalytic Theory

  • Unconscious drives shape behavior—Freud argued that repressed memories, desires, and conflicts influence us without our awareness
  • Personality structure: the id (pleasure principle), ego (reality principle), and superego (moral standards) create internal conflict
  • Defense mechanisms like repression, projection, and rationalization protect the ego from anxiety—know these for the exam

Humanistic Theory

  • Humans are inherently growth-oriented—Rogers and Maslow rejected both behaviorism's environmental determinism and Freud's dark view of human nature
  • Self-actualization sits atop Maslow's hierarchy; unconditional positive regard in Rogers' client-centered therapy creates conditions for growth
  • Free will and self-concept are central—this perspective emphasizes subjective experience and personal meaning over objective measurement

Compare: Psychoanalytic vs. Humanistic—both focus on internal experience, but Freud saw humans as driven by unconscious conflict while humanists viewed us as naturally motivated toward growth. Same patient, very different therapy approaches.


Development Across the Lifespan

These theories examine how we change over time, emphasizing either cognitive maturation, social-emotional bonds, or psychosocial challenges at different life stages.

Developmental Theories

  • Stage-based progression—Piaget's four stages (sensorimotor, preoperational, concrete operational, formal operational) describe qualitative shifts in thinking ability
  • Multiple frameworks: Erikson's eight psychosocial stages focus on identity challenges; Vygotsky's sociocultural theory emphasizes the zone of proximal development and social scaffolding
  • Nature-nurture interaction—maturation sets the timeline, but experience determines what's learned within each stage

Attachment Theory

  • Early bonds shape later relationships—Bowlby argued attachment to caregivers is an evolved survival mechanism; Ainsworth identified patterns through the Strange Situation
  • Four attachment styles: secure, anxious-ambivalent, avoidant, and disorganized—each predicts different relationship patterns in adulthood
  • Internal working models formed in infancy become templates for expectations about relationships and self-worth

Compare: Piaget vs. Vygotsky—both studied cognitive development, but Piaget emphasized individual discovery through stages while Vygotsky stressed social interaction and cultural tools. An FRQ about a child learning from a more skilled peer? That's Vygotsky's zone of proximal development.


Quick Reference Table

ConceptBest Examples
Learning through associationClassical Conditioning, Taste Aversion
Learning through consequencesOperant Conditioning, Behaviorism
Role of mental processesCognitive Theory, Information Processing, Social Learning Theory
Unconscious influencesPsychoanalytic Theory, Defense Mechanisms
Human potential and growthHumanistic Theory, Self-Actualization
Lifespan changePiaget's Stages, Erikson's Stages, Attachment Theory
Observation and modelingSocial Learning Theory, Bobo Doll Study
Nature vs. nurture interactionAttachment Theory, Developmental Theories

Self-Check Questions

  1. Both classical and operant conditioning involve learning from the environment. What is the key difference in how learning occurs in each, and what type of behavior does each explain?

  2. A student watches a classmate get praised for answering a question and becomes more likely to raise their hand. Which theory best explains this, and what cognitive processes must occur for the learning to happen?

  3. Compare and contrast the psychoanalytic and humanistic views of human nature. How would a therapist from each perspective approach a client struggling with low self-esteem?

  4. An FRQ asks you to explain why a child who was neglected in infancy struggles to form close relationships as an adult. Which theory provides the best framework, and what key concept would you use?

  5. How would a behaviorist and a cognitive psychologist differently explain why a student fails to study for an exam despite knowing the test is important?