CBT for insomnia

1. Introduction

Version followed: multicomponent CBT-I as defined in the AASM 2021 clinical practice guideline (Edinger et al.), delivered in the Penn 8-session structure (Perlis and colleagues; Muench, Vargas, Posner & Perlis 2022), with each component taken from its developer's protocol chapter in Behavioral Treatments for Sleep Disorders (Perlis, Aloia & Kuhn, eds., 2011). Where protocols differ (titration thresholds, minimum time in bed, session count), the alternatives are named: Spielman's sleep restriction rules, Edinger's Duke/VA manual, CBTI-M (Taylor, revised 2019) and BBTI (Germain & Buysse).

CBT-I is not one technique but a short, diary-driven package for chronic insomnia. It combines sleep-regulation education, sleep restriction and stimulus control (the behavioural core), usually sleep hygiene and counter-arousal methods, and cognitive work on sleep-related beliefs, worry and monitoring [source: Edinger et al. 2021; Muench et al. 2022]. Its model of change is Spielman's 3P model: whatever predisposed and precipitated the insomnia, it is kept going by perpetuating factors — extended time in bed, irregular schedules, napping, "trying" to sleep, conditioned arousal to the bed, and worry about consequences. Treatment removes these: restricting time in bed raises homeostatic sleep pressure and consolidates sleep, a fixed rise time anchors the circadian rhythm, stimulus control re-pairs the bed with rapid sleep rather than wakeful frustration, and cognitive methods reduce the sleep effort and threat appraisal that sustain arousal [source: Spielman, Yang & Glovinsky 2011; Bootzin & Perlis 2011; Morin & Bélanger 2011]. The therapist's job is mostly prescription, titration and adherence work, guided by weekly sleep-diary data.

Note: CBT-I has no single founder. Stimulus control is Bootzin's (1972), sleep restriction Spielman's (1987), and the multicomponent package and its cognitive components were developed by Morin, Edinger, Espie, Harvey, Perlis, Lichstein and others [source: Wikipedia CBT-I article; BTSD chapter authorship].

2. Framework

[source: Penn session structure slides (Perlis); Muench et al. 2022; Edinger et al. 2021; CBTI-M therapist manual rev. 2019; Germain & Buysse BBTI chapter; Edinger Duke manual]

Format. Typically 4–8 sessions (AASM: CBT-I 4–8, brief therapies 1–4), weekly or fortnightly, 15–90 minutes, individual or group; also delivered via telehealth and digital programmes. Penn slides advise staying open to more than 8 sessions, as many patients have not recovered baseline sleep time by session 8 [source: Muench et al. 2022; Penn slides].

Phase A — Assessment and baseline (session 1, plus 1–2 weeks of diaries).

Goals: confirm chronic insomnia; screen for conditions that CBT-I alone will not fix or that make sleep restriction unsafe (sleep apnoea, restless legs, circadian rhythm disorder, parasomnias, epilepsy, bipolar disorder, unstable medical or psychiatric illness, safety-critical job or driving); take sleep, medical, psychiatric, substance and medication history; administer ISI and start the daily sleep diary [source: CBTI-M; Edinger et al. 2021; Spielman et al. 2011].
Move on when: 1–2 weeks of usable diary data exist (Penn: diaries are "the price of therapy"), the patient is medically and psychiatrically stable enough, and no unmanaged sleep disorder better explains the complaint [source: Penn slides]. Refer for polysomnography when apnoea, periodic limb movements or parasomnia is suspected [synthesis, consistent with Spielman et al. 2011 contraindications].

Phase B — Initiation of the behavioural core (session 2).

Goals: sleep education (two-process model, 3P model); calculate baseline sleep time and efficiency; prescribe the sleep window (sleep restriction) and stimulus control instructions; plan how to stay awake until the bedtime and what to do when out of bed; warn about early sleepiness and safety [source: Penn slides; Germain & Buysse; Spielman et al. 2011].

Phase C — Titration, adherence and added components (sessions 3–7).

Each session: review the diary (ideally with a calculator spreadsheet), compute mean sleep efficiency (SE = total sleep time ÷ time in bed × 100), check adherence, titrate the window, troubleshoot, then add one new component [source: CBTI-M; Muench et al. 2022].
Penn order: session 3 problem-solving + sleep hygiene; sessions 4–7 upward titration, cognitive therapy around session 5. CBTI-M order (6 sessions): sleep basics → sleep schedules → sleep hygiene → relaxation → beliefs about sleep → problem solving [source: Penn slides; CBTI-M].
Titration rule followed here (Spielman/Muench): weekly, on 7 nights of data — SE ≥ 90%: add 15 (or 30) minutes; SE 85–<90%: no change; SE < 85%: remove 15 (or 30) minutes. Older adults: thresholds 85% and 80%. Alternatives: Edinger manual (initial window = average sleep + 30 min; add 15 min if SE ≥ ~85% and still sleepy, cut 15 min if SE < 80%); CBTI-M (> 90% add 15; 85–90% hold; 70–85% cut 15 after checking adherence; < 70% recalculate); BBTI (titrate on sleep latency and wake after sleep onset both under 30 minutes on most nights) [source: Spielman et al. 2011; Muench et al. 2022; Edinger manual; CBTI-M; Germain & Buysse].

Phase D — Consolidation and relapse prevention (final session).

Goals: fix the final schedule, review what worked, write a relapse plan, teach how to re-apply restriction and stimulus control if insomnia returns [source: Penn slides; Germain & Buysse final visit].
Ending criterion: there is no fixed stopping rule. Spielman's endpoint is the time in bed that gives good daytime functioning and reliable consolidated sleep — the point of maximum net benefit, not maximum efficiency (which is highest at the minimum window, when patients are sleepiest) [source: Spielman et al. 2011; Muench et al. 2022]. Many services also use an ISI score in the no-clinically-significant-insomnia range as a remission marker [uncertain: ISI cut-offs from Morin et al. 2011 validation paper].

Expected course. Sleep often worsens for 1–2 weeks, then improves over the next 4–6; latency and wake after sleep onset typically fall by about half; total sleep time gains come later [source: CBTI-M; Muench et al. 2022].

Brief and alternative formats. BBTI: four weeks (45-minute visit, phone call under 20 minutes, 30-minute visit, phone call), plus a brief final visit 1–2 weeks later, using education + stimulus control + sleep restriction only [source: Germain & Buysse]. Edinger's Duke/VA manual: one 45–60-minute session (rationale, education, six rules, window) plus 30–45-minute follow-ups [source: Edinger manual].

3. Guiding principles

Data-driven, not impression-driven. Every prescription and titration decision comes from the patient's own diary averages — never from "how the week felt" [source: Edinger et al. 2021; Lichstein et al. 2011].
Treat perpetuating factors, not the original trigger. Ask what keeps insomnia going now; the precipitating stressor is context, not the target [source: Spielman et al. 2011].
Sleep is involuntary; effort backfires. Coach the patient to set up conditions and then let sleep come, rather than try harder [source: Espie 2011; Morin & Bélanger 2011].
Fixed rise time is the anchor. Same wake time seven days a week (less than an hour's variation) regardless of the night before [source: Bootzin & Perlis 2011; Spielman et al. 2011].
Bed is for sleep (and sex). Waking activities, worry and clock-watching move out of bed [source: Bootzin & Perlis 2011].
Explain every rule's rationale; never just hand over a list. Understanding drives adherence; a handout-only approach invites "I've tried that" [source: Bootzin & Perlis 2011; Posner & Gehrman 2011].
Collaborate on the schedule. Let the patient choose bed and rise times within the prescribed window and negotiate the starting dose [source: Edinger manual; Spielman et al. 2011].
Dose adequately. Avoid under-dosing restriction and over-dosing time in bed; extend in small steps [source: Penn slides].
Safety before efficacy. Screen for drowsy driving, safety-critical work, mania risk, seizures and falls, and adjust or omit restriction when present [source: Edinger et al. 2021; Spielman et al. 2011].
Set expectations up front. Things get worse before better; commit to the plan for a set number of nights; skills persist after therapy ends [source: Penn slides; CBTI-M].
Reframe the goal. Aim for shorter sleep latency, less time awake and better days — not a fixed number of hours [source: Penn slides; Morin & Bélanger 2011].
Test beliefs with experience. Prefer behavioural experiments to verbal persuasion when beliefs are strong [source: Harvey & Talbot 2011].
Normalise slips. A lapse is information for problem-solving, not failure [source: CBTI-M].
Adapt only when needed. Deliver standard CBT-I first; modify for a clear reason (comorbidity, safety, intolerance) rather than by default [source: Muench et al. 2022].

4. Intervention inventory

Interventions 1–9 are the behavioural and educational core; 10–17 are counter-arousal and cognitive components; 18–21 are formats, specialist variants and relapse prevention. All example language is illustrative unless quoted.

4.1 Sleep diary and sleep metrics

Purpose / when: Baseline (1–2 weeks before prescribing) and throughout treatment; the basis of every titration decision. Also a tool against misperception and catastrophising [source: Muench et al. 2022; Lichstein et al. 2011; CBTI-M].
Steps:
1. Give a daily diary completed each morning within an hour or so of rising: time to bed, lights out, estimated time to fall asleep (SL), number and total duration of awakenings (WASO), final wake time, time out of bed, naps, caffeine/alcohol/medication, sleep quality rating. Ask for estimates, not clock-checking.
2. Compute weekly means: time in bed (TIB), total sleep time (TST = TIB − SL − WASO − early-morning awakening time), SE = TST/TIB × 100 [source: Muench et al. 2022].
3. Exclude truly atypical nights outside the patient's control (illness, emergency duty) [source: CBTI-M; Lichstein et al. 2011].
4. Graph the data with the patient each session.
Example language (illustrative): "I'm not asking you to watch the clock — your best guess in the morning is exactly what I need. These numbers will decide your schedule, so they work for you."
Watch for: Missing or retrospective diaries (fill in only with the patient's best recall in session, and problem-solve the barrier); clock-watching to fill it in; perfectionism. Working when diaries are complete enough to compute 7-night means.

4.2 Sleep education (two-process and 3P models)

Purpose / when: Session 2 (CBTI-M session 1), before any prescription; it supplies the rationale that makes restriction and stimulus control acceptable [source: Germain & Buysse; CBTI-M; Edinger manual].
Steps:
1. Sleep drive (Process S): builds with time awake, is discharged by sleep; naps, lie-ins and early bedtimes spend it [source: Edinger manual; CBTI-M].
2. Body clock (Process C): a regular rise time and morning light set the rhythm; irregular schedules produce "jet lag at home" [source: Edinger manual; CBTI-M].
3. Draw the 3P timeline: predisposing traits, the precipitating event, and the perpetuating habits (extended TIB, napping, worrying in bed) that outlived the trigger [source: Spielman et al. 2011; CBTI-M].
4. Normal sleep facts: individual variation in need, lighter more broken sleep with age, recovery of deep sleep after sleep loss [source: Edinger manual].
5. Link each upcoming rule to the model.
Example language (illustrative): "Your insomnia started with that stressful year, but what keeps it going now are the things you sensibly did to cope — more time in bed, catching up at weekends. Those habits spread your sleep thin. We're going to concentrate it."
Watch for: Lecturing; use the patient's own diary and history. Working when the patient can explain in their own words why less time in bed could help.

4.3 Sleep restriction therapy (sleep window / prescribed time in bed)

Purpose / when: The core behavioural ingredient for sleep-onset, maintenance and mixed insomnia, indicated when SE is below about 85% (80% in older adults). Builds sleep pressure, consolidates sleep, reduces anticipatory anxiety [source: Spielman et al. 2011; Edinger et al. 2021].
Contraindications / cautions: Safety-critical jobs or regular driving, conditions worsened by sleepiness or deep sleep (epilepsy, parasomnias, untreated sleep-disordered breathing), predisposition to mania/hypomania, excessive daytime sleepiness. Unlikely to help someone who falls asleep quickly and only wakes too early [source: Spielman et al. 2011; Edinger et al. 2021]. Use sleep compression (4.4) or a larger window instead.
Steps (Spielman/Muench version):
1. From baseline diaries, take mean TST. Set initial TIB = mean TST (gentler variant: + 30 minutes; Edinger and BBTI use + 30 by default) [source: Spielman et al. 2011; Edinger manual; Germain & Buysse].
2. Apply a floor: 5 hours in Spielman's current chapter (original 1987 study 4.5 h; Penn slides 4 h; CBTI-M 5.5 h; BBTI recommends at least 6 h for older adults because of falls) [source: as named]. This guide follows 5 h, with 5.5–6 h for older adults [synthesis].
3. Fix the rise time first (no later than the usual workday rise time) and count back to the earliest bedtime. Place the window where sleep is best: long sleep latency → later bedtime; good early sleep but poor late sleep → earlier rise time; diffuse waking → trim both ends [source: Spielman et al. 2011].
4. Same window 7 days a week; no naps or lying down outside it (modern variant permits a planned short nap early on, especially in older adults) [source: Spielman et al. 2011].
5. Plan how to stay awake until bedtime (light, upright, mildly engaging activities away from the bed; avoid dozing on the sofa) and morning activities [source: Penn slides; Germain & Buysse].
6. Titrate weekly on 7 nights' data (rules in Section 2). Add increases where the night is most needed — often at the start of the night if early waking is the problem [source: Spielman et al. 2011].
7. Stop titrating at the point of maximum net benefit (good daytime function, reliable sleep), then hold [source: Spielman et al. 2011].
Example language (illustrative): "Your diary says you're sleeping about five and three-quarter hours, spread over eight and a half in bed. We'll start with a window that matches the sleep you're actually getting — say 12:30 to 6:15 — and earn time back week by week as your sleep fills it. Sleep may be shorter at first, but each night should feel less like a gamble."
Example language (safety, illustrative): "For the first couple of weeks you'll likely be sleepier than usual. If you feel drowsy, don't drive — we'll widen the window if needed."
Watch for: Daytime sleepiness, fatigue, irritability, poor concentration, headache (mostly in weeks 1–2) [source: Edinger et al. 2021; Spielman et al. 2011]; drowsy driving (Edinger manual case of falling asleep at a traffic light → widen window and stop driving); mood elevation in bipolar spectrum; staying in bed outside the window "just resting"; reports of near-zero sleep (possible paradoxical insomnia: SE may never pass threshold — consider increasing by 15–30 min weekly regardless, or stop restriction) [source: Spielman et al. 2011]. Working when SL and WASO shrink, SE rises above 85%, and the window can be extended.

4.4 Sleep compression

Purpose / when: Gradual alternative to restriction for patients with little daytime impairment, short sleep need, older adults, those who will not tolerate abrupt cuts, or where restriction is unsafe [source: Lichstein, Thomas & McCurry 2011; Muench et al. 2022].
Steps:
1. Two weeks' baseline diary; compute mean TIB and TST (exclude atypical nights).
2. Gap = TIB − TST. Divide across planned sessions (usually about six). Example from the chapter: TIB 8 h, TST 6 h → cut about 20 minutes per week until TIB ≈ 6 h.
3. Negotiate bed and rise times within each week's TIB; keep them consistent.
4. Slow down if TST rises or daytime impairment grows; around sessions 4–5 renegotiate the pace. If TST reaches TIB early, hold for a few weeks; resume cuts if sleep worsens [source: Lichstein et al. 2011].
- Spielman's chapter describes a different compression schedule (cut half the TIB–TST gap at session 1, then a quarter at sessions 2 and 3) [source: Spielman et al. 2011]. Name which you use.
Example language (illustrative): "Rather than a big change, we'll trim twenty minutes a week. You choose whether it comes off the evening or the morning."
Watch for: Rushed cuts (sleepiness, irritability); rotating shift workers are poor candidates; plan evening and morning activities for the new awake time [source: Lichstein et al. 2011].

4.5 Stimulus control therapy

Purpose / when: All insomnia types, particularly sleep-onset problems and conditioned arousal ("sleepy on the sofa, wide awake in bed") [source: Bootzin & Perlis 2011].
Steps:
1. Introduce with an analogy: would you study better in bed or at the kitchen table? Have the patient list everything done awake in bed/bedroom and compare with a good sleeper's list [source: Bootzin & Perlis 2011].
2. Give and explain the instructions (paraphrased from Bootzin): (a) go to bed only when sleepy; (b) use bed only for sleep and sex — no reading, TV, eating, phone or worrying; (c) if not asleep fairly quickly, get up and go to another room, return only when sleepy; (d) repeat (c) as often as needed; (e) same rise time every morning; (f) no daytime naps [source: Bootzin & Perlis 2011; Edinger et al. 2021].
3. Define "sleepy" (eyes closing, yawning, head nodding — not just tired) [source: CBTI-M].
4. Set the get-up cue: roughly 10–15 minutes by estimate (the "quarter-hour rule"), never by clock-watching; for clock-anxious patients, turn the clock away and get up at the first sign of frustration. Lying awake 60+ minutes is never acceptable [source: Bootzin & Perlis 2011; CBTI-M].
5. Make the night plan: a warm, dim room ready in advance; calm, non-screen activities; stay up until sleep feels likely (usually at least 15 minutes); no sleeping on the sofa; return to bed if 45+ minutes remain before rise time [source: Bootzin & Perlis 2011].
6. Start sleepiness monitoring gently: "bed only when sleepy" is a goal to reach over a few weeks, combined with the prescribed earliest bedtime [source: Bootzin & Perlis 2011].
Example language (illustrative): "Right now your bed is a place where you lie and battle. We want your body to learn that bed means falling asleep fast. Each time you get up instead of fighting, you're teaching it that."
Watch for: "Yo-yo" nights in the first one to two weeks (prepare for them); falls in frail patients, sedative users or those with orthostatic hypotension (use counter-control, 4.6); cognitive impairment; patients who stay in bed "because they weren't frustrated" [source: Bootzin & Perlis 2011; Edinger et al. 2021]. Working when nights out of bed decrease and sleep onset after returning becomes faster.

4.6 Counter-control (stimulus control variant)

Purpose / when: For patients who cannot safely or practically leave bed (mobility limits, fall risk, shared accommodation, no other room) [source: Muench et al. 2022; Bootzin & Perlis 2011 mention modifications for disabled or fall-risk patients].
Steps: Sit up in bed and do a calm, non-arousing activity under dim light (for example reading something undemanding) instead of leaving the room; lie down again only when sleepy; otherwise keep all other stimulus control rules [uncertain: procedure detail from the original counter-control study (Zwart & Lisman 1979); steps are a synthesis consistent with Muench et al. 2022].
Example language (illustrative): "Since getting up at night isn't safe for you, we'll change the spot rather than the room: sit up, low light, something quiet, and lie back down when your eyes get heavy."
Watch for: Dozing while sitting up (sleep in bed is fine, but the aim is to lie down only when sleepy); bright screens.

4.7 Sleep hygiene (tailored)

Purpose / when: Remove lifestyle and environmental factors that add arousal; a support to CBT-I, not a stand-alone treatment (AASM: conditional against as single therapy) [source: Posner & Gehrman 2011; Edinger et al. 2021].
Steps:
1. Screen with a hygiene questionnaire (e.g., Sleep Hygiene Index or Sleep Hygiene Awareness and Practice Scale) or interview; focus only on active problems [source: Posner & Gehrman 2011].
2. For each relevant rule, cover: why it matters, the science, and a specific plan. Rules (paraphrased): exercise not right before bed; avoid naps (or keep brief and adjust bedtime); a light snack is fine, avoid heavy or sugary food late; limit fluids before bed; caffeine cut-off tailored to the person (CBTI-M: none after noon); no alcohol as a sleep aid; no nicotine, especially during night waking; mask noise with constant white noise; pets out of the bed; cool, dark, comfortable bedroom, clock turned away; regular wake time [source: Posner & Gehrman 2011; CBTI-M].
3. Every few rules, remind the patient that no single change — or all of them together — is guaranteed to end insomnia.
4. During treatment apply them together; afterwards reintroduce one at a time to learn which matter for this person [source: Posner & Gehrman 2011; CBTI-M].
Example language (illustrative): "You probably know most of these already. Rather than go through a list, let's look at which two or three actually show up in your diary."
Watch for: Patients concluding "behavioural treatment doesn't work" after hygiene alone; abrupt smoking cessation worsening sleep; caregivers who must hear at night; very dark rooms and falls in older adults; reflux or restricted diets and snacks [source: Posner & Gehrman 2011].

4.8 Wind-down (buffer) period and planned out-of-bed time

Purpose / when: Create a transition from the day and fill the extra hours that restriction creates. Introduced with the schedule [source: CBTI-M ("wind-down hour"); Germain & Buysse (planned morning activities); Lichstein et al. 2011 (plan evening and morning activities)].
Steps:
1. Agree a roughly hour-long pre-bed routine done outside the bedroom: dim light, relaxing, non-work, low screen activities [source: CBTI-M].
2. Schedule specific activities for the late evening before the prescribed bedtime and for the early morning after the rise time.
3. Rehearse what to do when sleepy before the window opens (stand, change rooms, mild activity) [synthesis].
Example language (illustrative): "From ten until your window opens at midnight, what will you actually do? Let's write down three options that are pleasant but won't wind you up."
Watch for: Dozing during the wind-down (common in older adults and depression); the wind-down turning into effortful "sleep preparation" rituals [synthesis].

4.9 Scheduled worry period / constructive worry

Purpose / when: For patients whose mind races with problems and plans in bed [source: Edinger manual rule 4; Carney 2003 dissertation (constructive worry)].
Steps:
1. Early in the evening (well before the wind-down), set aside a fixed block of time (length not specified in the sources; 15–20 minutes is a common choice [synthesis]).
2. Write each current problem or concern.
3. For each, write the next step — not the full solution: what to do; whom to consult; "deal with it if it arises"; or, for important but unsolvable problems, how to accept or cope.
4. Fold the sheet and put it away (some versions keep it on the nightstand).
5. If worry arises in bed, remind oneself it has been dealt with as well as possible for today and will be revisited tomorrow evening; if the mind keeps racing, get up (stimulus control) [source: Carney 2003 abstract; Bonfil 2014 summary; Edinger manual].
Example language (illustrative): "Your bed has become your office for worrying. Let's give the worrying an appointment at seven o'clock instead, with a pen."
Watch for: Doing it at bedtime (too close); the list becoming a rumination session; the evidence in Carney's study showed reduced pre-sleep cognitive arousal but no change in diary sleep measures, so treat it as an arousal-reduction aid, not a stand-alone treatment [source: Carney 2003].

4.10 Relaxation training (counter-arousal)

Purpose / when: Reduce somatic and cognitive arousal; best for sleep-onset insomnia; AASM conditional recommendation as a single component. Less central in contemporary protocols but in CBTI-M as a full session [source: Lichstein, Taylor, McCrae & Thomas 2011; Edinger et al. 2021; Muench et al. 2022; CBTI-M].
Options and steps:
- Hybrid passive relaxation (Lichstein, ~10 minutes): (1) about 45 seconds setting a relaxed attitude — mind-wandering is fine, don't force it; (2) about 1.5 minutes of five slow deep breaths, each briefly held, exhaling with a soft "relax"; (3) about 5 minutes of body focusing through arms, face, trunk and legs, noticing relaxing sensations; (4) about 2 minutes of autogenic focus on heaviness and warmth in the limbs. Patients can emphasise the parts they like [source: Lichstein et al. 2011].
- Progressive muscle relaxation: tense a muscle group 5–15 seconds, release 20–45 seconds; 10–30-minute sessions; over sessions move from individual groups to whole-body release (the chapter does not specify a muscle sequence) [source: Lichstein et al. 2011].
- Diaphragmatic ("tactical") breathing: slow belly breathing with counting, pairing the out-breath with a cue word; rate tension 0–100 before and after [source: CBTI-M].
- Guided imagery: recall a relaxing place the patient has actually been, using all five senses; avoid future-focused images [source: Lichstein et al. 2011].
- Autogenic training (brief versions about 30 seconds per component) and biofeedback (usually frontalis EMG; no more effective than PMR) are alternatives [source: Lichstein et al. 2011].
- Practice schedule: at least twice daily — a daytime skill-building practice and a bedtime practice (the "therapeutic dose"); can be used during night waking. Optionally two weeks of daytime-only practice first. Record or provide audio guidance [source: Lichstein et al. 2011; CBTI-M].
Example language (illustrative): "This isn't something you can get right or wrong. If your mind wanders, that's part of it — just come back to the next breath."
Watch for: Relaxation-induced anxiety in a minority (switch method or keep eyes open); trying too hard to relax; no time to practise; imagery unsuitable for some (and trauma-related imagery risk — choose neutral scenes [synthesis]) [source: Lichstein et al. 2011]. Working when pre/post tension ratings fall and sleep onset shortens.

4.11 Cognitive therapy for dysfunctional beliefs about sleep (Morin)

Purpose / when: Target beliefs that turn sleeplessness into a threat: unrealistic sleep expectations, faulty attributions ("purely chemical"), amplified consequences, misconceptions about sleep-promoting practices. Usually mid-treatment (Penn session 5; CBTI-M session 5) [source: Morin & Bélanger 2011; Penn slides; CBTI-M].
Steps:
1. Teach the cognitive model with a non-sleep example, then apply to a recent bad night.
2. Elicit automatic thoughts through self-monitoring and Socratic questioning.
3. Select targets using the DBAS (Morin's Dysfunctional Beliefs and Attitudes about Sleep scale; review the most strongly endorsed items — CBTI-M: top four, two to three per session). Do not reproduce items; administer the licensed form.
4. Work one belief at a time: evidence for/against, likelihood of the feared outcome, alternative explanations (reattribution), decatastrophising, what one would tell a friend, costs and benefits of the belief.
5. Shift attention away from sleep monitoring; address deeper beliefs only as far as the patient can use.
6. Homework: three-column thought record (situation, thoughts, emotions with intensity), upgraded to five columns (adding alternative thought and re-rated emotion).
7. Let the patient generate alternatives; offer one only if they can't [source: Morin & Bélanger 2011; CBTI-M].
Example language (illustrative): "When you think 'If I don't get eight hours I won't cope tomorrow', how many times in the past month have you had under eight hours — and on how many of those days did you actually not cope?"
Watch for: Patients who hear "it's all in your head" — present psychological factors as one modifiable part of a multi-cause picture; simplify for cognitive impairment or low psychological-mindedness; sometimes plain education corrects the belief without formal restructuring [source: Morin & Bélanger 2011]. Working when belief ratings and DBAS scores fall and pre-sleep anxiety reduces.

4.12 Decatastrophising by probability estimation (Perlis & Gehrman)

Purpose / when: For patients who overestimate catastrophic consequences of a bad night; usually one session in the second half of treatment [source: Perlis & Gehrman 2011].
Steps:
1. Introduce it as a look at how night-time thinking can make insomnia worse, without condescension.
2. Calculate insomnia duration in days (use a life-event timeline; count conservatively; adjust for nights per week from diaries).
3. Elicit 3–10 catastrophic thoughts with an "If I don't fall asleep, tomorrow I'll…" stem; if the answer is benign ("be tired"), follow it to the feared consequence (a T-chart on a whiteboard).
4. For each, record the certainty (0–100%) felt at the moment of night-time worry.
5. Establish how often each feared event has actually happened over the insomnia period.
6. Multiply certainty × insomnia days to get "expected" occurrences and compare with actual occurrences (the central moment of the exercise).
7. Discuss why night-time judgement inflates threat (sleep loss, circadian timing, darkness).
8. Agree a short counter-phrase for use at night [source: Perlis & Gehrman 2011].
Example language (illustrative): "You've had about 2,000 bad nights. At 3 a.m. you're 80% sure you'll be fired the next day — that would predict around 1,600 firings. How many have there been?"
Watch for: Sounding pedantic; real catastrophes the patient links to sleepiness (e.g., a serious accident — may make the exercise inappropriate and changes the clinical priority); cognitive impairment [source: Perlis & Gehrman 2011].

4.13 Behavioural experiments (general protocol; Harvey)

Purpose / when: Generate experiential evidence when verbal methods are not enough; aim for about one per session; needs sessions of about 50 minutes [source: Harvey & Talbot 2011 (ch. 7)].
Steps: (1) identify the target belief, thought, behaviour or process precisely; (2) design the experiment collaboratively and specifically (when, where, what, resources), practising in session if possible; (3) write predictions and a recording method; (4) anticipate obstacles; (5) run it; (6) review, draw and write down conclusions, designing a follow-up if unclear. Prefer short experiments (within a day or session) to limit night-to-night confounds; record outcomes promptly [source: Harvey & Talbot 2011].
Experiments on beliefs (Harvey & Eidelman):
- Energy experiment: on two days, alternate a 3-hour block of conserving energy with a 3-hour block of activity (order reversed on day 2); rate fatigue, mood and coping 0–10. Typical conclusion: energy stretches with use.
- "Poor sleep is dangerous": one night with sleep reduced by about 1–1.5 hours, pleasant activity in the freed time, monitor coping. Later in treatment only; never before driving or safety-critical work.
- Control experiment: one night trying everything to make sleep happen versus one night dropping all sleep effort; compare diary measures.
- Survey: patient surveys 10–20 similar-age people about their sleep and daytime tiredness; collate together [source: Harvey & Eidelman 2011 (ch. 8)].
- Savouring vs worrying in bed: rate pleasantness and sleep quality on trial nights [source: Harvey & Talbot 2011].
Example language (illustrative): "Let's treat this as a test rather than a debate. What exactly do you predict will happen on the day you stay active? Write it down, and we'll compare."
Watch for: Unexpected results (debrief the sequence of events openly); vague delayed reports; repeat key conclusions in later sessions.

4.14 Reducing safety behaviours and sleep-related monitoring

Purpose / when: Safety behaviours (napping, lie-ins, early bedtimes, coffee or alcohol to cope, clock-watching, cancelling plans, monitoring tiredness) prevent disconfirmation of feared beliefs and often worsen sleep. Assess with the Sleep-Related Behaviours Questionnaire and the Sleep Associated Monitoring Index [source: Harvey & Eidelman 2011 (ch. 10)].
Steps: use the six-step experiment format to compare the usual behaviour with a changed condition:
- Monitoring: alternate 2-hour blocks of body/symptom scanning and outward focus (e.g., during a walk), three times in a week; rate mood, energy and performance three times a day.
- Clock: usual clock-checking versus clock out of sight (alarm set to remove fear of oversleeping) for a week or more; add night-time anxiety ratings to the diary.
- Napping: week 1 unchanged, week 2 no dozing with pleasant activities scheduled at usual nap times (at least two weeks; warn of short-term tiredness; older adults may keep a short early-afternoon nap).
- Caffeine: usual intake versus limited intake earlier in the day with other energy strategies; rate energy.
- Alcohol: usual versus reduced drinking with none close to bedtime; warn that sleep takes a few nights to adjust [source: Harvey & Eidelman 2011].
Example language (illustrative): "Checking the clock feels like it gives you control. Let's find out what it actually does to your anxiety — one week with it, one week without."
Watch for: Alcohol dependence (do not run a reduction experiment where withdrawal is a risk — refer for medical assessment [synthesis]); naps in high-risk drivers.

4.15 Correcting sleep and daytime misperception

Purpose / when: For patients who underestimate their sleep or attribute all daytime impairment to it. First check that the patient actually misperceives — some are accurate [source: Harvey & Talbot 2011 (ch. 9)].
Steps:
1. Use spontaneous discrepancies first; ask what sense the patient makes of them.
2. Where available, compare actigraphy or PSG with the diary and calculate perception accuracy; without equipment, compare the number of perceived awakenings with a handheld counter the patient presses on waking.
3. Teach: sleep onset is hard to judge because it is defined by missing memories; felt time is distorted by mood and clock-watching; sleep inertia (grogginess for minutes after waking) is normal, not proof of a bad night.
4. Daytime experiments: daily same-condition photos for a week, then ask the patient to pick the most tired-looking one; or concentration ratings 1–5 three times daily compared with diary sleep [source: Harvey & Talbot 2011].
Example language (illustrative): "You've told me you didn't sleep at all on Tuesday. The watch shows about three and a half hours. What do you make of that?"
Watch for: Verbal persuasion alone (less effective than experiments); patients feeling disbelieved — validate the distress while testing the estimate [source: Harvey & Talbot 2011; synthesis].

4.16 Paradoxical intention (Espie)

Purpose / when: For high sleep effort, preoccupation and performance anxiety (the psychophysiological picture). Advanced technique when used alone; not for very concrete thinkers or cognitively impaired patients. AASM: no recommendation (insufficient evidence) [source: Espie 2011; Edinger et al. 2021].
Steps:
1. Ask how a good sleeper "does" sleep — they don't do anything; sleep is allowed to come.
2. Measure: the patient completes the Glasgow Sleep Effort Scale as a good sleeper would (near zero), then for themselves (usually high). Use the licensed scale; do not reproduce items.
3. Formulate the problem as a "sleep effort syndrome" and "draw the thin line" between healthy commitment (keep) and effort, forcing and preoccupation (drop).
4. Use everyday parallels: sleeping better in the lab, the itch you try not to scratch, the thought-suppression "white bear", performance failures in sport.
5. Give up trying to sleep, by one of two methods: Method 1 ("turning the tables") — a carefree stance toward wakefulness, seeing it as an opportunity; Method 2 (explicit paradox) — at the usual time, lights off, eyes open, gently try to stay awake a little longer without deliberately arousing oneself; same on night waking [source: Espie 2011].
Example language (illustrative): "Tonight, when the light goes off, keep your eyes open and see if you can stay awake just a bit longer — no phones, no getting up, just gently resisting the heaviness."
Watch for: Mechanical or literal compliance; continued striving (now to "do PI right"); use gentle humour and de-catastrophising, not instruction-giving [source: Espie 2011]. Integration with stimulus control (which says get up when awake) needs explicit agreement on which rule applies [synthesis].

4.17 Mindfulness-based and acceptance-based additions

MBTI (Ong) combines mindfulness meditation with stimulus control and sleep restriction and is a separate manualised programme; AASM gives no recommendation for mindfulness. Use it as a referral or adjunct for patients with high sleep effort or rumination rather than improvising it into CBT-I [source: Lichstein et al. 2011 (MBTI described); Edinger et al. 2021; uncertain: Ong's MBTI chapter].

4.18 Brief behavioural treatment for insomnia (BBTI) as a format

Purpose / when: Where time or access is limited, or as a first step in stepped care [source: Germain & Buysse; Edinger et al. 2021].
Steps: Week 1 (in person, ~45 min): education, stimulus control, sleep window = diary sleep + about 30 minutes, choose morning activities, written goals. Week 2 (phone, <20 min): adherence, questions, adjust. Week 3 (in person, ~30 min): troubleshoot, teach self-titration. Week 4 (phone): if latency and waking are under 30 minutes on most nights but sleepiness persists, add 15 minutes; if either exceeds 30, cut 15. Final brief visit 1–2 weeks later reviews rules and self-titration [source: Germain & Buysse].
Watch for: Bipolar or psychotic disorders, regular drivers and machine operators, falls in older adults (window at least 6 h) [source: Germain & Buysse].

4.19 Intensive sleep retraining (specialist, laboratory)

Described for completeness: after one night restricted to 5 hours, a 25-hour laboratory session offers a sleep opportunity every 30 minutes (each up to 20 minutes, ended after 3 minutes of EEG-verified sleep, with feedback on whether sleep occurred), then 8 hours' recovery sleep, followed by stimulus control and weekly sessions. Requires a sleep laboratory; contraindicated with epilepsy and bipolar disorder. Not deliverable in ordinary practice [source: Harris & Lack 2011].

4.20 Bright-light timing (optional adjunct)

Listed by Penn as an optional component to help patients stay awake until the prescribed bedtime and to correct mild phase shifts; not standardised [source: Penn slides; uncertain: Lack & Wright's bright-light chapter; no protocol is given here]. Screen for a circadian rhythm disorder and refer rather than improvise light schedules [synthesis].

4.21 Relapse prevention (final session)

Purpose / when: Final session; insomnia is often episodic, so the patient needs a plan for future bad patches [source: Penn slides; Germain & Buysse].
Steps:
1. Review the diary trajectory and what changed; let the patient name which components helped.
2. Agree the maintenance schedule (fixed rise time; bedtime when sleepy, within the final window).
3. Teach self-titration: how to widen or shorten time in bed using efficiency or latency/waking rules [source: Germain & Buysse].
4. Write a written plan: early warning signs (several poor nights, sleeping in, napping, going to bed early to "catch up"); first response — do not extend time in bed, re-apply stimulus control, restart the diary, and reinstate a restricted window if poor sleep persists for more than a few weeks [synthesis consistent with Spielman, Bootzin and Edinger rationales].
5. Reintroduce hygiene "rules" one at a time to discover which matter for this person [source: Posner & Gehrman 2011].
Example language (illustrative): "A run of bad nights after a stressful week is normal. The trap is to respond by spending longer in bed. What will you do instead?"
Watch for: Ending while daytime sleepiness persists; leftover hypnotic tapering (coordinate with the prescriber; no dosing guidance here).

5. Handling problems

Non-adherence to the sleep window or rise time (the commonest failure; Edinger names three culprits: no fixed rise time, staying in bed awake, daytime dozing) [source: Edinger manual].

Check the diary night by night for the specific break (lie-ins, early bedtimes, evening dozing, staying in bed awake) before titrating; don't cut the window for non-adherence-driven low efficiency without first fixing the behaviour [source: CBTI-M; Spielman et al. 2011 citing Friedman et al.].
Practical fixes: alarm across the room, a morning commitment (walk, breakfast with someone), pre-planned out-of-bed activities, no reclining in the last hours before bedtime [source: Edinger manual; CBTI-M].
Normalise slips, address guilt, identify what derailed the plan, recruit family support [source: CBTI-M].
If restriction is the obstacle, negotiate: start with diary sleep + 30 minutes, or switch to compression [source: Spielman et al. 2011; Lichstein et al. 2011].

Anxiety about restriction ("I'll be a wreck")

Treat the anxiety as data on the target belief and examine it with the patient [source: Harvey & Eidelman 2011].
Loosen the window and allow a short early-afternoon nap, then reintroduce structure (Edinger case 3) [source: Edinger manual].
Use a scheduled-commitment frame: a fixed number of nights, then review the data together [source: Penn slides].

Excessive daytime sleepiness or safety concerns

Ask about drowsy driving at every session. If present: widen the window (e.g., 30 minutes, then 15), advise not driving until it resolves, and consider temporary duty changes for safety-critical work (CBTI-M suggests about two weeks, via supervisors) [source: Edinger manual; CBTI-M].
Reconsider restriction entirely for safety-critical jobs; use compression or stimulus control alone [source: Edinger et al. 2021; Spielman et al. 2011].

Stuck: efficiency good but no improvement in total sleep or satisfaction

Check the endpoint: further extension may only refragment sleep; reframe from "more hours" to good daytime function [source: Spielman et al. 2011].
Consider low sleep need (compression logic) or paradoxical insomnia (misperception work, actigraphy; increase window weekly regardless of efficiency) [source: Lichstein et al. 2011; Spielman et al. 2011; Harvey & Talbot 2011].
Add the cognitive components (beliefs, decatastrophising, safety behaviours) if only the behavioural core has been delivered [source: Morin & Bélanger 2011; Perlis & Gehrman 2011].
Re-screen for an untreated sleep disorder (apnoea, restless legs, circadian delay or advance), medication effects, pain or substance use, and refer [synthesis, consistent with Edinger et al. 2021 cautions].
Offer more sessions; many patients need more than eight [source: Penn slides; Muench et al. 2022].

Stuck: efficiency stays low despite adherence

Recalculate from fresh diaries and reset the window (CBTI-M rule for SE < 70%); check for stimulus control errors (lying awake too long) [source: CBTI-M].
Look for hyperarousal and worry; add relaxation, constructive worry or paradoxical intention [source: Lichstein et al. 2011; Espie 2011].

Clock-watching and sleep effort generated by the rules themselves

Muench et al. warn that the 15-minute rule can provoke clock-watching and that "return when sleepy" can become effortful. Turn the clock away and use frustration as the get-up cue; use paradoxical intention or the control experiment to reduce effort [source: Muench et al. 2022; Bootzin & Perlis 2011; Espie 2011; Harvey & Eidelman 2011].

Overwhelm (stress, many competing problems)

Reduce the agenda to the two core rules (fixed rise time, out of bed when awake) and the diary; postpone add-ons [synthesis].
Use the constructive-worry sheet to contain problems outside bed [source: Carney 2003].

Skepticism and "I've tried all that"

Distinguish CBT-I from sleep hygiene leaflets; explain each rationale; run self-directed experiments on disputed rules; accept partial change rather than forcing full compliance when resistance is high (Edinger case 4) [source: Posner & Gehrman 2011; Edinger manual].
Patients who attribute insomnia to a chemical imbalance: present a multi-cause model in which behaviour and thinking are the modifiable parts [source: Morin & Bélanger 2011].

Ruptures

Sources say little about alliance ruptures in CBT-I [uncertain]. Likely flashpoints are feeling blamed for poor adherence, feeling disbelieved about how little they sleep, or feeling patronised in decatastrophising [synthesis, informed by Perlis & Gehrman 2011 and Harvey & Talbot 2011 cautions]. Response: name it, validate the difficulty of the regimen, give the patient choice over timing and dose, and return to shared data rather than authority [synthesis].

Modality-specific difficulties

Hypnotic use: CBT-I can be delivered alongside hypnotics; coordinate any tapering with the prescriber (no dosing here). Stimulus control needs care in sedated patients because of falls; combination treatment may reduce long-term durability [source: Edinger et al. 2021; Muench et al. 2022; Germain & Buysse].
Bipolar disorder, epilepsy, parasomnias: restriction may provoke mania, seizures or parasomnias; use a wider window or compression, monitor mood weekly, and coordinate with the treating psychiatrist or neurologist. Restriction usually means 1–2 hours' loss, not the 4–8 hours of deprivation that carries the known risk, but caution remains [source: Muench et al. 2022; Edinger et al. 2021].
Older adults, pain, mobility limits: lower efficiency thresholds, a minimum window around 6 hours, planned short naps, counter-control instead of leaving the bed, night lighting to prevent falls [source: Spielman et al. 2011; Germain & Buysse; Posner & Gehrman 2011].
Depression: patients may struggle to fill time out of bed and to initiate activity; schedule activities concretely and expect slower uptake [source: Edinger et al. 2021; synthesis].
Shift workers / irregular schedules: poor candidates for compression and restriction in standard form; assess for shift-work disorder and refer [source: Lichstein et al. 2011; synthesis].
Suicide risk: insomnia commonly co-occurs with depression and suicidal thinking. Screen for suicidal ideation at intake and when mood worsens, follow your service's standard risk assessment and safety planning, including lethal-means counselling (safe storage or removal of means, including stockpiled sleep medication), and do not defer this to the insomnia agenda [synthesis; not addressed in the CBT-I sources].
Group and digital delivery: individual titration still needs each person's diary; in groups, calculate windows individually and handle adherence privately [synthesis; group delivery of compression with 3–6 people is described by Lichstein et al. 2011].

Sources

Sources:

Further reading (not drawn on): Morin et al. (2006) review via PubMed; VA CBT-I therapist manual (Manber et al. 2014); Europe PMC.

Books and papers cited:

Bootzin, R. R. (1972). Stimulus control treatment for insomnia. Proceedings of the APA.
Spielman, A. J., Saskin, P., & Thorpy, M. J. (1987). Treatment of chronic insomnia by restriction of time in bed. Sleep, 10, 45–56.
Morin, C. M. (1993). Insomnia: Psychological Assessment and Management. Guilford.
Perlis, M. L., Jungquist, C., Smith, M. T., & Posner, D. (2005). Cognitive Behavioral Treatment of Insomnia: A Session-by-Session Guide. Springer. [uncertain]
Perlis, M., Aloia, M., & Kuhn, B. (Eds.) (2011). Behavioral Treatments for Sleep Disorders: A Comprehensive Primer of Behavioral Sleep Medicine Interventions. Academic Press/Elsevier.
Manber, R., & Carney, C. E. (2015). Treatment Plans and Interventions for Insomnia: A Case Formulation Approach. Guilford. [contents only]
Nowakowski, S., Garland, S. N., Grandner, M. A., & Cuddihy, L. J. (Eds.) (2022). Adapting Cognitive Behavioral Therapy for Insomnia. Academic Press.
Edinger, J. D., et al. (2021). Behavioral and psychological treatments for chronic insomnia disorder in adults: an AASM clinical practice guideline. J Clin Sleep Med, 17(2), 255–262.
Harvey, A. G. (2002). A cognitive model of insomnia. Behaviour Research and Therapy, 40, 869–893. [uncertain]
Morin, C. M., et al. (2006). Psychological and behavioral treatment of insomnia: update of the recent evidence (1998–2004). Sleep, 29(11), 1398–1414. [uncertain]

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