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Glasgow Content of Thoughts Inventory (GCTI)

Glasgow Content of Thoughts Inventory (GCTI) Test

Understand which bedtime worries and rumination keep you from falling asleep in about 5 minutes. With 25 quick items, it pinpoints thought patterns to guide targeted support for insomnia.

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Questions: 255 minutes

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08:30

October 2, 2025

October 2, 2025
Material has been updated

October 2, 2025
Material has been published

11997 views

832 completions

722 likes

Scale Explorer

How the Scales are Structured

example score

74/100

Total Score (TS)

This scale measures how frequently intrusive, worry-based thoughts occur before sleep and interfere with falling asleep.

Low

High

25 – 42: Low | 43 – 100: High

A score of 74 falls in the High range, suggesting frequent pre-sleep intrusive thoughts that are likely to make it harder to relax and fall asleep.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

Chronic sleep-onset strugglers

41%OF USERS

People who regularly lie awake for a long time and want to pinpoint which thoughts and worries keep them from falling asleep.

High-stress overthinkers

34%OF USERS

People under ongoing work, study, or life stress who notice bedtime rumination, replaying the day, and anticipatory worry.

Therapy and clinic clients

25%OF USERS

People working with a psychologist or sleep specialist who need a quick snapshot of pre-sleep thought patterns to guide treatment.

BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.

RESULTS YOU CAN ACTUALLY USE

What You’ll See After You Finish the Test

Scale Results
— Explained Clearly

Your scores across each test scale, translated into plain, usable insights. Not just numbers, but what they actually mean for your daily life, emotional state, and overall well-being.

AI-Powered
Interpretation

A structured, clinically grounded explanation. Our AI analyzes patterns and relationships between scales to provide a coherent interpretation — without alarmist language.

Statistical
Comparison

See how you compare to others. Your scores are placed in a statistical context, showing percentiles and trends based on anonymized platform data to help you understand what`s typical.

Practical
Recommendations

Actionable guidance tailored to your profile. Receive clear, realistic suggestions you can apply immediately — focused on coping, self-regulation, and realistic next steps.

AI-Detected
Insights

Key patterns you might not notice on your own. Surfacing subtle connections in your responses that help you better understand what may be driving your current results.

Discuss with
an AI Psychologist

Clarify, reflect, and explore right away. Talk through your outcomes, ask questions, and explore meanings in a calm, non-diagnostic dialogue environment.

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Used in 52+ countries

Benchmarking

See How You Compare

Once you finish the test, your results will be compared with real-world data from people in your country.
Below is a preview of the benchmarks we use to place your score in context.

Points scored (Ps)

Average

66.5

Normal range

56.4 — 76.6

min.

max.

100

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

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CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

Any questions left?

What does this questionnaire measure?

It assesses the types of thoughts that occur just before sleep and may interfere with falling asleep. It focuses on worry, rumination, and sleep-related concerns.

When should it be completed?

It should be completed based on thoughts occurring in the period immediately before trying to fall asleep. Responses should reflect the most recent typical night if completing it at another time.

How are responses rated?

Each item is rated for how familiar the thought is in the moments before sleep. All items should be answered using the same rating scale provided.

How long does it take and how many items are included?

Completion time is about 5 minutes. The questionnaire contains 25 items.

How are the results used?

Results indicate which thought themes are most prominent before sleep and may be associated with difficulty initiating sleep. They can guide treatment planning and track change over time.

WHAT THE TEST MEASURES

About This Assessment

Glasgow Content of Thoughts Inventory (GCTI) Test

sleep

This self-report measure assesses the content of pre-sleep cognitions that may interfere with relaxation and sleep onset. The Glasgow Content of Thoughts Inventory (GCTI) is commonly used to characterize thought patterns associated with insomnia complaints, particularly repetitive thinking and worry.

Developed by G. A. Wells, it includes 25 items and typically takes about 5 minutes to complete. Respondents rate the extent to which specific thoughts are present when trying to fall asleep, supporting clinical formulation and monitoring.

Results from the Glasgow Content of Thoughts Inventory (GCTI) can help identify prominent cognitive themes to target in treatment planning (e.g., cognitive-behavioral interventions focused on maladaptive pre-sleep rumination), and may also be used as an outcome measure in clinical and research settings.

Author: G. A. Wells

Literature: Morin, C. M. Insomnia: psychological assessment and management. Guilford Press. 1993.; Espie, C. A. Insomnia: conceptual issues in the development, persistence, and treatment of sleep disorder in adults. Annual Review of Psychology. 2002.; Harvey, K. J., & Espie, C. A. Development and preliminary investigation of the Glasgow Content of Thoughts Inventory (GCTI): a new measure for the assessment of pre-sleep cognitive activity. British Journal of Clinical Psychology. 2004.

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