A mental set is our tendency to approach situations in certain ways because that method worked in the past.
The inability to see an object as useful for any other use other than the one for which it was intended.
The tendency to search for information that confirms our preconceptions while ignoring or devaluing information that contradicts them.
Perseveration: The repetition of a particular response (such as a word, phrase, or gesture) despite its lack of relevance in the current context.