Final answer:
Fixation involves using a prior strategy and failing to look at a problem from a fresh, new perspective.
Step-by-step explanation:
The cognitive bias that involves using a prior strategy and failing to look at a problem from a fresh, new perspective is Fixation. Fixation is the tendency to become fixated on a single trait or aspect of a problem, which prevents us from considering alternative solutions or perspectives. An example of fixation would be when a person continues to use the same ineffective approach to solve a problem, even when it is not yielding the desired results.