Watch for
Delaying decisions to gather more information when you already have enough to decide.
Decision & ChoiceBias #96
Information Bias
We seek data even when it cannot change the decision.
The tendency to seek additional information even when that information has zero ability to affect the ultimate decision because gathering data feels productive.
Why it matters: Explains analysis paralysis and excessive diagnostic testing in medicine.
Try this
Before seeking more data ask: what would change my decision and can this data change it.
Real-world example
Running additional tests before making a decision when the tests cannot change the recommended course of action.
Key researchers
Jonathan Baron
First described in 1988
Psychological mechanism
Omission bias avoidance and anxiety reduction. Having more information feels like making a more informed decision even when the additional information is irrelevant. It reduces the anticipated regret of not knowing.
Seminal research
Jonathan Baron, Ralp M. Beattie, and John C. Hershey (1988), "Heuristics and biases in diagnostic reasoning."
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
Information bias reveals that data is not always valuable. The value of information depends on its ability to change a decision. When you have enough to decide more data is procrastination not prudence.
Sources
Original ResearchBaron, Beattie and Hershey (1988) — Information bias
EducationalAPA Dictionary entry