Who it's for — Anyone who has already «decided» long or short and then hunts the chart for confirmations only — skipping objective criteria and opposite signals.
Confirmation bias can push you to notice what supports your preferred thesis and downplay or ignore what contradicts it. In trading it can weaken a structured decision process and a checklist written before entry.
In plain terms — You decided to buy and see only support; bearish signals «don't count». The chart becomes a mirror of your idea.
Operational antidotes
| Tool | Action |
|---|---|
| Pre-trade checklist | Criteria written before opening the chart |
| Devil's advocate | Seek at least one well-founded reason not to enter |
| Log skipped trades and «near» entries too | |
| External review | Compare the setup with fixed rules, not the preferred narrative |
Common mistake — Adding indicators until one «gives the green light» — emotional curve fitting, not analysis.
Example — Long setup: you notice support but overlook falling volume on the breakout and negative delta. Entering on visual confirmation alone leaves the decision exposed to contrary information that was excluded.
Summary card
- What it is: selective search for confirmation.
- Signal: you «already know» direction before the checklist.
- Hub: Trading psychology.
Sources
- CFA Institute — The Behavioral Biases of Individuals — classifies confirmation bias among belief-perseverance biases and discusses detection and mitigation.
- Scientific Reports via PubMed Central — Confirmation bias in information search