A good bias is my choice of operators for missions based on what I have seen from their performance in training and operations. Good performance in training creates a bias to suggest I can count on that person in the operation as well as in the future based on previous operations.
A bad related bias is when an operator has not reached the performance I have come to expect after a period of time in training and thus reducing their operational experience. I need to understand some may take longer to be able to perform to expectations than other.