Psychology explained visually
Psychology explains the patterns behind everyday behaviour: why you put off the one task that matters, why a price ending in 99 feels cheaper, why a crowd can watch an emergency and nobody helps, why you remember the end of a holiday more than the middle. These aren't personality quirks; they are well-studied effects with names, experiments and practical fixes. Know.it's psychology lessons illustrate them with animated scenarios, so you recognise them the next time they happen to you.
This page gathers our free psychology explainers: cognitive biases and mental shortcuts, learning and memory (including active recall and the spacing effect), motivation and habits, emotions and stress, and social psychology — conformity, groupthink and the bystander effect — plus classic theories like Maslow's hierarchy of needs and conditioning.
Each card opens a short written explanation. An optional visual lesson uses available credits or plan allowance. Use the written guides to study smarter, understand people better or prepare for a psychology course. Requested visual lessons offer language options based on your plan.
What is…? Psychology explainers
Free written definitions, key facts and FAQs
What is a cognitive bias?
What is procrastination?
What is the Dunning-Kruger effect?
What is cognitive dissonance?
What is confirmation bias?
What is emotional intelligence?
What is the placebo effect?
How are habits formed?
What is classical conditioning?
What is operant conditioning?
What is motivation?
What is a logical fallacy?
How does it work? Psychology step by step
The mechanism, one step at a time
How does memory work?
How does spaced repetition work?
How does muscle memory work?
Psychology comparisons
Commonly confused ideas, side by side
Empathy vs. Sympathy: What's the Difference?
Serotonin vs. Dopamine: What's the Difference?
Sympathetic vs. Parasympathetic: What's the Difference?
Key areas of psychology
Where to start, and what each area covers.
Cognitive biases
Confirmation bias, anchoring and the sunk-cost fallacy — the shortcuts that trip up good thinkers.
Learning and memory
Active recall and spaced repetition — study techniques backed by decades of research.
Habits and motivation
How habits form in the brain and what actually keeps you motivated.
Emotions and stress
The fight-or-flight response, emotional intelligence and how stress affects the body.
Social psychology
Why groups conform, why bystanders freeze and how first impressions stick.
Classic theories
Maslow's hierarchy of needs and classical and operant conditioning.