Erikson, Piaget & Psychology Theories & Concepts Explained

The Overjustification Effect: Why Rewards Can Backfire on Motivation

The overjustification effect occurs when offering an external reward for an activity someone already enjoys causes their intrinsic motivation to decline — sometimes called the undermining effect for exactly this reason. First demonstrated in Deci’s early laboratory work and later confirmed in Lepper, Greene, and Nisbett’s landmark 1973 study, overjustification effect psychology reveals a counterintuitive truth: adding a reward doesn’t...

Social Learning Theory: Bandura’s Observational Learning & Bobo Doll

Social learning theory is Albert Bandura’s framework proposing that people learn by observing others — not only through direct experience or personal reward and punishment. His landmark Bobo Doll experiment showed that children imitate aggressive behavior after simply watching an adult, fundamentally challenging behaviorism’s insistence that consequences must be personally experienced. Social learning theory bridges behavioral and cognitive approaches, showing...

The Macrosystem: Cultural Values, Policies & Trickle-Down Effects

Two children are born on the same day. One grows up in Norway; the other in the United States. Both have loving parents, decent schools, and similar family incomes. Yet by age one, the Norwegian child has spent months bonding with a parent at home on paid leave, while the American child is already in daycare because neither parent could...

Metacognition: Examples, Skills & Why It Makes You a Better Learner

Metacognition is the ability to monitor and control your own thinking and learning processes — often described simply as “thinking about thinking.” When you pause mid-study session and realize you’ve been reading on autopilot without absorbing anything, then decide to slow down and re-read, that moment of self-awareness is metacognition in action. First formally defined by developmental psychologist John Flavell...

Initiative vs Guilt: Erikson’s Stage 3 & Purpose Development

Initiative vs guilt is the third stage of Erik Erikson’s theory of psychosocial development, occurring during the preschool years between ages 3 and 5. In Erikson stage 3, children begin to assert power and control over the world through directing play and other social interactions. Success leads to the virtue of purpose — the ability to envision and pursue goals...

Autonomy vs Shame and Doubt: Erikson’s Stage 2 & Toddler Independence

As infants grow into toddlers, they begin to assert their will, explore their environment, and develop a sense of self apart from their caregivers. According to Erik Erikson, this critical phase—typically occurring between 18 months and 3 years—marks the second stage of psychosocial development: Autonomy vs. Shame and Doubt.