Here are three examples of cognitive biases:

1. Confirmation Bias: The tendency to seek out and interpret information in a way that supports one's pre-existing beliefs, while disregarding information that contradicts them.
2. Availability Bias: The tendency to make decisions based on information that is most readily available, rather than seeking out all relevant information.
3. Hindsight Bias: The tendency to believe, after an event has occurred, that one would have correctly predicted the outcome, despite having had no prior evidence or justification to support the prediction.