What is the term for a tendency to approach a problem in only one way?

The term for a tendency to approach a problem in only one way is mental set. A mental set refers to a framework or established pattern of thinking used to solve a problem based on past experiences or learned responses. This might limit a person's ability to conceive of alternative solutions or to think outside the box, which can hinder problem-solving abilities in new or different situations.

For example, if someone has successfully used a specific method to solve a type of puzzle in the past, they may become fixated on that method, attempting to apply it to similar puzzles even when it may not be appropriate. This reliance on one particular approach can restrict creativity and lead to challenges in finding effective solutions when faced with novel problems.

The other terms provided describe different cognitive phenomena. Fixation also refers to a sort of mental set but is more closely associated with an inability to see a fresh perspective on a problem. Cognitive dissonance involves the psychological discomfort experienced when holding conflicting beliefs or values. Framing pertains to the way information is presented, which can affect decision-making processes but is not about sticking to one problem-solving method.