Confirmation bias when reviewing chart screenshots
Posted: Sat Oct 31, 2026 8:11 pm
Reviewing past trades by looking at screenshots seems like good practice. It carries a trap: seeing what is expected.
With hindsight, the chart tells a clean story. The setup looks obvious, the failure looks avoidable, and the success looks deserved. That clarity wasn't available in real time.
Selective review is the other problem. Memorable wins and painful losses get studied, while the boring middle gets ignored. The sample doesn't represent reality.
Better methods include reviewing trades in random order, covering the part of the chart after entry and asking what decision would be made, and tallying outcomes by setup type instead of examining stories.
Statistics beat anecdotes. After 100 trades of a given type, the numbers show if it works, regardless of how the best screenshots look.
Using a replay tool to practise reading charts bar by bar, without peeking ahead, also reduces hindsight distortion.
How do you review trades without fooling yourself?
With hindsight, the chart tells a clean story. The setup looks obvious, the failure looks avoidable, and the success looks deserved. That clarity wasn't available in real time.
Selective review is the other problem. Memorable wins and painful losses get studied, while the boring middle gets ignored. The sample doesn't represent reality.
Better methods include reviewing trades in random order, covering the part of the chart after entry and asking what decision would be made, and tallying outcomes by setup type instead of examining stories.
Statistics beat anecdotes. After 100 trades of a given type, the numbers show if it works, regardless of how the best screenshots look.
Using a replay tool to practise reading charts bar by bar, without peeking ahead, also reduces hindsight distortion.
How do you review trades without fooling yourself?