Watch for
Assuming a streak changes the underlying probability.
Belief & ConfidenceBias #104
Hot-Hand Fallacy
We believe streaks predict continued success.
The belief that a person who has experienced success in a random sequence has a higher probability of continued success despite the events being independent.
Why it matters: A famous debate in sports statistics. Originally thought to be a fallacy but some contexts show genuine hot hands.
Try this
Check whether the events are actually independent before assuming a streak matters.
Real-world example
A basketball player who has made three shots in a row is believed to be on fire and likely to make the next even though each shot is independent.
Key researchers
Thomas Gilovich, Amos Tversky
First described in 1985
Psychological mechanism
Pattern seeking and representativeness heuristic. The brain sees a streak as non-random suggesting a causal force at work. It underestimates how often streaks occur in truly random sequences.
Seminal research
Thomas Gilovich, Robert Vallone, and Amos Tversky (1985), "The hot hand in basketball: On the misperception of random sequences."
Related Biases
Below is a realistic scenario. Read it, then choose what you would do. The feedback will show whether a cognitive bias influenced your choice — not to judge, but to reveal the pattern in action.
Thought Experiment
This experiment places you in a realistic decision. Your instinctive choice will reveal whether bias is at work.
STEP 1 → ReadSTEP 2 → ChooseSTEP 3 → Reveal
Debrief
The hot-hand fallacy is the mirror of the gamblers fallacy. Gamblers fallacy says a streak must end. Hot-hand says a streak will continue. Both mistake patterns in random sequences for meaningful signals.
Sources
Original ResearchGilovich Vallone and Tversky (1985) — Hot hand
EducationalAPA Dictionary entry