1 items
A single-item scale assessing subjective sleepiness at the moment of assessment. Highly suitable for EMA/ESM studies.
Scoring
Single item, 1–9. Higher scores indicate greater sleepiness. Scores ≥7 indicate impaired performance.
Citation
Åkerstedt, T., & Gillberg, M. (1990). Subjective and objective sleepiness in the active individual. International Journal of Neuroscience, 52(1–2), 29–37.
doi:10.3109/00207459008994241License: Free for research use.
How sleepy do you feel right now?
1–9 · "Extremely alert" → "Extremely sleepy, fighting sleep"
Use this scale in your own ESM/EMA study — embed it as a survey within SMAAT.