016 min
Sunk Cost Fallacy: Why “I've Already Spent So Much” Backfires
The movie is the cheap version. Careers, cars and relationships are where the same reflex gets expensive.
September 24, 2026 · Decision IQ editorial
Read the guideResources
See what is shaping the decision.
Plain-English field notes on common decision traps: what the research says, how they show up, and what to do when you notice one.
027 min
Loss Aversion: Why Losing $50 Hurts More Than Winning $50 Feels Good
The asymmetry is real. The famous two-to-one rule is much less tidy than most explanations suggest.
September 24, 2026 · Decision IQ editorial
Read the guide036 min
Decision Fatigue Is Real, But Not for the Reason You Think
Feeling done with deciding is real. The story that willpower is a fuel tank did not survive serious replication tests.
September 24, 2026 · Decision IQ editorial
Read the guideDecision guides
Substantial choices, mapped across all six brains.
One decision idea a week
One useful idea. No daily drip, no pressure.
A real decision beats a hypothetical one.
Bring yours. You can start without an account.