Erikson, Piaget & Psychology Theories & Concepts Explained

Frustration-Aggression Theory: Why the ‘Always’ Rule Failed

Picture yourself second in line for concert tickets when a stranger slips in right in front of you. Now imagine the same thing happening when you’re twelfth in line. Most people get far angrier in the first situation, and a classic field study found exactly that. Frustration-aggression theory explains why: when a goal gets blocked, the urge to strike back...

Developmental Tasks Examples: 12 Real Cases From Age 1 to 72

A 15-month-old lets go of the coffee table. A 52-year-old takes a phone call about his mother’s broken hip. A retired teacher wakes up on a Monday with nowhere to be. Each one is facing a developmental task: a challenge that shows up at a fairly predictable point in life and shapes how ready a person is for the next...

Havighurst’s Developmental Tasks: Life Stages & Teachable Moments

Why does a 16-year-old suddenly care about the career quiz that bored them at 12? Robert Havighurst would say the task arrived. Havighurst developmental tasks are the skills, attitudes and roles people are expected to master at certain points in life, from learning to walk to adjusting to retirement. Each task shows up when the body, society and the person...

Robbers Cave Experiment Summary: The Part Sherif Left Out

In the summer of 1954, 22 eleven-year-old boys arrived at a camp in the Oklahoma hills expecting swimming, hiking, and campfires. Their friendly counselors were actually psychologists, quietly taking notes. Within days, the boys were burning flags and planning raids on each other’s cabins. The Robbers Cave experiment went on to become one of the most retold studies in social...

Independent vs Dependent Variables: How to Spot Them in Real Psychology Studies

You are halfway through a psychology exam, and the question describes a study where children watch an adult attack an inflatable doll and are then left alone with it. Which part did the researcher control, and which part was simply counted? Independent and dependent variables in psychology sound easy until a study summary scrambles the wording. Five famous experiments, a...

Theories of Emotion: James-Lange vs Cannon-Bard vs Schachter-Singer

A car swerves toward you in a parking lot. Before you’ve even processed what happened, your heart is hammering, your hands are shaking, and you’re scared. So which came first: the pounding heart or the fear? For more than a century, theories of emotion have answered that question in surprisingly different ways, and the answer that feels most obvious is...