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AP Psychology study help, unit by unit

Isotoon helps with AP Psychology by animating the ideas behind the vocabulary, such as a neuron firing or a response being reinforced, so you can apply a term to a new scenario instead of only defining it. Choose a unit below and ask what you need explained.

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AP Psychology, unit by unit

  1. Unit 1: Biological Bases of Behavior

    Heredity and environment, the nervous system and how neurons communicate, the structure and function of the brain, sleep and its stages, and how the senses turn physical energy into signals the brain can use.

    How does a neuron send a signal to the next one?
    Read: How neurons send signals

  2. Unit 2: Cognition

    Perception and how expectations shape it, thinking, problem solving and decision making, how memories are encoded, stored and retrieved, why we forget, and how intelligence is defined and measured.

    Why do some memories last and others fade within a day?
    Read: How memory works

  3. Unit 3: Development and Learning

    Physical, cognitive and social development across the lifespan, and how we learn through classical conditioning, operant conditioning and observation.

    What is the difference between classical and operant conditioning?
    Read: Classical vs operant conditioning

  4. Unit 4: Social Psychology and Personality

    How other people shape what we think and do, attribution, persuasion and group behavior, along with theories of personality and motivation and emotion.

    Why do people blame someone's character instead of their situation?

  5. Unit 5: Mental and Physical Health

    Health psychology and stress, positive psychology, how psychological disorders are explained and diagnosed, and approaches to treatment.

    How does stress affect the body over time?

How to use it across the year

AP Psychology has a lot of terms, and the exam rarely asks you to define one. It asks you to recognize the idea in a situation you have not seen. Understanding the mechanism is what makes that possible.

  1. When a term feels abstract, ask how it works. Good places to start are how neurons send signals, how memory works and classical vs operant conditioning.
  2. Then practice applying it. Released free-response questions and the course materials from the College Board show the kind of scenario you will be given.
  3. Rewatch each video 1, 3, 7, 14 and 30 days after you made it. The notebook lists them for you.

For the reasoning behind that schedule, read how to study for exams without forgetting.

What the exam asks you to do

The course was revised for the exam first given in 2025, with more weight on applying concepts and on reading research: identifying a study's method, variables and what its data can and cannot show. Expect scenarios that ask which concept explains a behavior and why. A good test of your own understanding: can you make up a fresh example of a concept, then explain why a similar-looking example is something else? Check the College Board course page for the current format.

Where students get stuck

  • Negative reinforcement versus punishment. Negative reinforcement removes something to make a behavior more likely.
  • Classical and operant conditioning blurring together in a scenario question.
  • Encoding, storage and retrieval, and why a memory can be present but hard to reach.
  • Research methods: correlation versus experiment, and what counts as a confounding variable.
  • Brain regions and neurotransmitters learned as a list, with no picture of how a signal actually travels.
  • Development theories, where it is easy to mix up whose stages describe thinking and whose describe social growth.

What Isotoon does and does not do

Isotoon explains ideas with short narrated videos whose claims are checked and sourced. If a video raises a new question, ask it underneath and the answer continues as the next part. It is not a practice-test bank or a vocabulary list. The psychology page has more questions, and exam prep shows how to fit it into review.

Questions

Is Isotoon affiliated with the College Board?
No. AP is a trademark registered by the College Board, which is not affiliated with and does not endorse Isotoon.
Does this page follow the revised AP Psychology course?
Yes. The units listed are the five units of the revised course first examined in 2025.
Can Isotoon help with psychology vocabulary?
It helps you understand what a term describes, which makes it easier to apply. It does not make flashcards or vocabulary quizzes.

AP is a trademark registered by the College Board, which is not affiliated with, and does not endorse, Isotoon. Check the College Board’s course page for the current units and exam format.