Why People Gamble: Behavioural Economics

Why people gamble despite negative expected value, including the gambler's fallacy, near-misses, overweighting small probabilities and the thrill of risk.

If gambling loses money on average, why do people do it?

Reasons

Entertainment and excitement.
Hope of a life-changing win.
Social activity.

Biases

Gambler’s fallacy: believing a win is “due” after losses.
Overweighting small probabilities, as in prospect theory.
Illusion of control: thinking choices affect random outcomes.
Near-misses feel like almost winning, encouraging more play.

Chasing losses

Players keep betting to win back money, deepening losses.

Design

Slot machines and apps use lights, sounds and rewards to keep people playing.

The red streak

After eight reds on roulette, a player bets heavily on black, believing it's due, though each spin is independent.

Thinking past spins affect future ones

Each spin is independent.

Key takeaways

People gamble for fun and hope.
The gambler's fallacy misleads players.
People overweight small probabilities.
Chasing losses deepens harm.