The Ford Insomnia Response to Stress Test (FIRST)

What does FIRST measure?

FIRST measures sleep reactivity — the degree to which your sleep gets thrown off by stress and arousal. It is a short questionnaire: you rate how likely your sleep would be to suffer across a set of stressful or stimulating circumstances, and the ratings add up to a single score, with higher numbers meaning a more reactive sleep system. Unlike an insomnia test, it asks about your general tendency, not any particular bad night.

It was developed by sleep researchers at Henry Ford Hospital, which is where the name comes from. There is no single official clinical cutoff that labels someone 'a high reactor'; researchers generally compare higher scorers against lower ones. Because it is a copyrighted instrument, this page describes what it captures rather than listing its questions.

What is sleep reactivity?

Sleep reactivity is a trait — a stable, measurable tendency for stress to disturb sleep, the way some people's stomachs are more easily upset than others'. Researchers think of it as a predisposing vulnerability that sits quietly until a stressor arrives. Insomnia itself is trouble falling or staying asleep despite the chance to sleep, and when it persists three nights a week for more than three months it becomes chronic 1Ref 1National Heart, Lung, and Blood Institute (2022).Insomnia — What Is Insomnia?.Definition of insomnia and the three-nights-a-week, more-than-three-months threshold at which insomnia is considered chronic.. High reactivity is one reason a short-term sleep problem crosses that line.

Think of it as the sleep equivalent of a low or high threshold. The stressor is the same; what differs is how far the sleep system bends before it breaks. FIRST is an attempt to put a number on that threshold before life tests it.

Why does stress ruin some people's sleep and not others?

The difference is partly built in. Sleep reactivity tends to run in families and is more pronounced in people who are prone to worry or who have had insomnia before. When a precipitating stressor lands — a job loss, a new baby, a loss — a high-reactor's sleep is far more likely to fracture, while a low-reactor rides out the same week and still sleeps. This is much of the mechanism behind why stress and sleep collide so unevenly from one person to the next.

It is also why the advice to simply relax rarely lands. For a high-reactor, stress does not just occupy the mind; it shifts the physiology of sleep itself, and the vulnerability was there before the stress arrived.

Sleep reactivity is the trait; a stressor is the trigger. You need both for stress-driven insomnia — which is why the same crisis spares one person and floors another.

Does a high FIRST score mean I'll get insomnia?

No. A high FIRST score is a probability, not a prophecy. Plenty of high-reactors go through stressful stretches and sleep fine, and many never develop chronic insomnia at all. What the score identifies is who stands to gain most from protecting their sleep early — before a few rough nights harden into a lasting pattern. It is a risk marker, used in research and increasingly in prevention, not a diagnosis of anything.

The value of knowing is mostly about timing. If you understand that your sleep is stress-sensitive, an acute bout of sleeplessness is less alarming and easier to handle well, which is exactly what keeps it from becoming chronic.

A high score is a heads-up, not a sentence — most stress-related sleep loss is short-lived and recovers on its own.

How FIRST fits the bigger picture of insomnia risk

Sleep researchers often describe chronic insomnia as the product of three ingredients: a predisposition, a trigger, and the habits that keep it going. Sleep reactivity is the predisposition — the trait you bring to the situation. A stressful event is the trigger. And behaviors like lying in bed awake for hours, or leaning hard on naps and caffeine, are what turn a few bad nights into a lasting problem.

FIRST measures only the first ingredient, and that is precisely its usefulness. Knowing your predisposition before a trigger arrives lets you protect the third stage — the habits — at the moment it counts most. It reframes insomnia from a personal failing into a predictable interaction: a vulnerable sleep system meeting a hard stretch of life, with the outcome shaped by what happens next.

What helps if your sleep buckles under stress?

For someone whose sleep buckles under stress, the useful move is to catch an acute bout early and not let it harden into a chronic one. Cognitive behavioral therapy for insomnia is the recommended first-line treatment for chronic insomnia, ahead of medication 2Ref 2Mysliwiec V, Martin JL, Ulmer CS, et al. (2020).The Management of Chronic Insomnia Disorder and Obstructive Sleep Apnea: Synopsis of the 2019 U.S. Department of Veterans Affairs and U.S. Department of Defense Clinical Practice Guidelines.That the VA/DoD clinical practice guideline recommends CBT-I as the first-line treatment for chronic insomnia, ahead of medication.. Its behavioral components — stimulus control, relaxation, and sleep restriction therapy — carry graded evidence for improving sleep 3Ref 3Edinger JD, Arnedt JT, Bertisch SM, et al. (2021).Behavioral and psychological treatments for chronic insomnia disorder in adults: an American Academy of Sleep Medicine systematic review, meta-analysis, and GRADE assessment.That behavioral components such as stimulus control, relaxation, and sleep restriction carry graded evidence for improving sleep outcomes., and a brief sleep-restriction protocol has worked even when delivered in ordinary general practice 4Ref 4Falloon K, Elley CR, Fernando A 3rd, Lee AC, Arroll B (2015).Simplified sleep restriction for insomnia in general practice: a randomised controlled trial.That a brief, simplified sleep-restriction protocol improved insomnia severity when delivered in ordinary general practice..

Simple, evidence-based steps for how to sleep better when stressed can blunt an acute episode before it settles in. If the sleeplessness lingers, a behavioral sleep medicine evaluation is where a high-reactor gets a targeted plan. The AASM CBT-I first line recommendation applies here too: the therapy that treats established insomnia is also the best-studied way to keep a stress-triggered bout from becoming permanent.

How is FIRST different from an insomnia test?

FIRST and an insomnia questionnaire answer different questions. FIRST measures a trait: how vulnerable your sleep is to stress in general. An insomnia severity measure like the insomnia severity index measures a state: how bad your insomnia is right now, with a total of around ten or more flagging a likely clinical case 5Ref 5Morin CM, Belleville G, Belanger L, Ivers H (2011).The Insomnia Severity Index: psychometric indicators to detect insomnia cases and evaluate treatment response.That a total Insomnia Severity Index score of around ten is the cutoff optimal for detecting a likely insomnia case in the community.. A person can be a high-reactor with a low current severity score — vulnerable but sleeping — or the reverse.

Where FIRST gauges vulnerability, other tools map the problem itself: a severity index for how bad it is, the dbas scale for the beliefs that keep insomnia going, and subtype labels like sleep-onset insomnia for the specific pattern of a bad night. FIRST sits upstream of all of them, describing the sleeper rather than the current symptom.