Unit Bias
Unit bias is the tendency to believe that a single unit of something is the right, appropriate, or optimal amount to consume or use.
This bias occurs because our brains often default to treating one discrete unit as a complete and sufficient portion. It simplifies decision-making by providing a clear, default stopping point. For example, a person might feel compelled to finish an entire plate of food or a single-serving package, even if they are already full, simply because it is presented as one unit.
Recognising a definition is not the same skill as spotting it.
Two scenarios from the app, with distractors drawn from the same family of biases — which is what makes them hard.
When planning a vacation, Zoe books one activity per day, thinking it's the perfect balance to avoid over-scheduling while still having fun.
Leo was at a sporting goods store. He bought one water bottle, believing that a single bottle was the appropriate amount for his hikes.
Biases rarely arrive alone.
Understand more. Assume less.
188 biases, 18,869 scenarios, and a record of how you actually decide.
Get Debias on Google Play