noun
fixation
fik-SAY-shun/fɪkˈseɪʃn/
Sustained concentration on a single point.
The man's fixation on the model locomotive makes him ignore the spreading spill.

Etymology
Fixation first named the alchemical process of making a volatile substance permanent, then the condition of being fixed. The psychological sense applies that fixedness to an unusually persistent attachment or preoccupation.
In context
it's repeated unwanted behavior often characterized by fixation or obsessive uh behavior on the part of the perpetrator that causes harm or distress
More examples
- His fixation with perfect grades leaves little time for friends.
- The eye tracker measures each fixation on the small dot.
- Old worries and fixations keep distracting her from work.
Forms
fixation · fixations
fixate verb — To focus persistently on one thing.
Similar words
- obsession
- Suggests a stronger, often intrusive preoccupation that feels difficult to control.
- preoccupation
- Emphasizes something occupying the mind and distracting from other concerns.
- concentration
- Emphasizes focused attention without necessarily suggesting excessive or persistent interest.