Single-Item Sleep Quality Scale (SQS)
Psychology: Mental Health1 sample item
About this scale
Sleep quality affects many psychological processes. Therefore, we often need to know how well participants sleep. Many sleep quality questionnaires are too long. This SQS with just one item can help, and it's reliability and validity have been tested. The validation piggy-backed on drug trials and lacked a placebo arm explicitly designed for reliability testing; the insomnia sample was small (n≈70). Results are strong but not the last word.
Sample item(s)
“Survey code includes 12 item lines. Open PsyToolkit to review wording and permissions.”
Notes
Psychology field scale. Check the PsyToolkit page and original paper for use rights before fielding.
Source & citation
Snyder, E., Cai, B., DeMuro, C., Morrison, M. F., & Ball, W. (2018). A new single-item sleep quality scale: results of psychometric evaluation in patients with chronic primary insomnia and depression. Journal of Clinical Sleep Medicine, 14(11), 1849-1857. Read full article for free here
Source. Scale details are summarised from the publication cited above. Always consult the original source for the full item set, scoring, and permission to use.
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