Hypervigilance
A sustained state of scanning the environment and people for danger, with heightened startle and difficulty relaxing.
What drives it
Keeps the person ahead of threats that were once real; the cost is exhaustion and a mind that reads danger into neutral cues.
How it shows
Work
Sits facing the door, notices every change in the boss's tone, reads hidden meaning into short emails, cannot focus because they are tracking the room, prepares for worst-case outcomes. Often an excellent early-warning system for real problems.
Relationships
Reads a partner's micro-moods and reacts before anything is said; difficulty relaxing at home; startles easily; checks locks; needs to know where everyone is.
Self
You can't fully relax; you notice everything; you scan new rooms for exits or for who is upset; quiet feels unsafe.
What tells it apart
Conscientiousness: Conscientiousness is careful about tasks and feels calm; hypervigilance is scanning people and threats and feels tense.
Paranoid personality: Hypervigilance is driven by fear and the person can often accept reassurance and see it as excessive; paranoid personality holds firm beliefs that others mean harm and resists counter-evidence.
Fear versus anxiety: Anxiety is the feeling; hypervigilance is the visible behaviour of constant scanning, startle and checking.
A test
Watch for startle at sudden noise, repeated glances toward doors or faces, and difficulty relaxing in safe settings; ask if they ever feel truly off duty.
Questions to carry
- In a safe setting, where do the person’s eyes go, and how easily do they startle?
- Where am I fully off duty, and how long has it been since I was?
How strong the research is
moderate. Well documented as a feature of PTSD and anxiety; lab measures of threat-attention bias are unreliable and treatments built on them have largely disappointed.
Where it comes from
DSM-III, 1980 (PTSD criteria); research on attentional bias to threat, 1980s onward