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Testing a sleep-related prediction safely

Agree a small, safe test of a sleep-related prediction and review what actually happened, including any uncertainty.

Written by Tarun Vermani, Trainee Clinical Psychologist Last reviewed

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Agree the experiment with your clinician first. Brief or spoken notes are fine; you may decline or stop. Never deliberately make yourself dangerously sleepy or remove necessary safety measures. Keep to your usual or agreed time in bed. Do not start, stop or change any medication as part of a test; talk to your prescriber first. Do not drive or do safety-critical work while sleepy. Stop the test and contact your clinician or GP if you feel much sleepier than usual, notice loud snoring or pauses in breathing during sleep, or feel unusually high or full of energy with little need for sleep. If help cannot wait, contact your urgent-care service now. This worksheet is for feelings you can manage. If you have urges to hurt yourself, or you feel unsafe, use your safety plan if you have one and tell your therapist. If you might act on the urges, call 999 or go to A&E. To talk to someone now, call Samaritans free on 116 123.

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Prediction, safe test and learning

Test one manageable change in attention, effort or checking. Better sleep is not required for learning.

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When to use ‘Testing a sleep-related prediction safely’

‘Testing a sleep-related prediction safely’ is an interactive cognitive behavioural therapy (CBT) worksheet, most often used in CBT for insomnia and sleep problems.

It is designed to be used within therapy rather than as a standalone self-help tool: a therapist introduces it, works through it collaboratively, and helps make sense of what it surfaces. You can preview the full worksheet above, then assign it digitally for clients to complete between sessions on any device or download it as a print-ready PDF.

How it works

Most people work through it in around 10 minutes. It centres on one focused exercise:

  1. Prediction, safe test and learning: Test one manageable change in attention, effort or checking. Better sleep is not required for learning.

Completed on the Formulate platform, your client's answers are saved automatically and shared straight back to you, so you can review them before the next session rather than waiting for a paper copy to come back.

The CBT approach behind it

In common with other CBT methods, ‘Testing a sleep-related prediction safely’ works by testing fearful predictions through real-world behavioural experiments. The aim is not positive thinking but a clearer, shared understanding of what keeps a difficulty going and practical, testable ways to change it.

Because it is a CBT tool it stays focused on the here-and-now links between thoughts, feelings, the body and behaviour, and it works best as one part of a wider course of therapy rather than as advice or a diagnosis.

Evidence & sources

This worksheet is grounded in established cognitive behavioural therapy theory and practice. Key sources include:

  • Morin, C. M., & Espie, C. A. (2003). Insomnia: A Clinical Guide to Assessment and Treatment. Kluwer Academic/Plenum Publishers.
  • Harvey, A. G. (2002). A cognitive model of insomnia. Behaviour Research and Therapy.
  • Ree, M. J., & Harvey, A. G. (2004). Insomnia. In J. Bennett-Levy et al. (Eds.), Oxford Guide to Behavioural Experiments in Cognitive Therapy. Oxford University Press.

For use alongside professional support

Formulate provides educational CBT resources for use with a qualified therapist. They are not a substitute for professional assessment, diagnosis, or crisis care.

If you need urgent help now:

  • Emergency services: 999 — if you or someone else is in immediate danger
  • NHS 111 (NHS 24 in Scotland): 111 — choose the mental health option for urgent help, in England, Scotland and Wales (in Wales, press 2)
  • Lifeline: 0808 808 8000 — for urgent help in Northern Ireland, free, day or night
  • Samaritans: 116 123 — free, day or night, 365 days a year
  • Shout: 85258 — text SHOUT, free, day or night
  • SANEline: 0300 304 7000 — 4pm–10pm, every day

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