Tiredness and Sleepiness Scales

Two sleepiness scales: Karolinska Sleepiness Scale (KSS) and Epworth-inspired Tiredness Scale

This test implements two sleepiness assessment scales: **Karolinska Sleepiness Scale (KSS):** A single-item 9-point scale measuring current sleepiness level, from '1 - Extremely alert' to '9 - Very sleepy, great effort to keep awake, fighting sleep; urgent need to sleep'. Participants rate how sleepy they feel right now by clicking on a vertical visual analog scale. **PEBL Tiredness Scale:** Inspired by the Epworth Sleepiness Scale. Participants rate how likely they would be to fall asleep in seven different everyday situations. Each situation is rated on a 21-point scale from 'Never' (would never fall asleep) to 'Almost certain' (would almost certainly fall asleep). The seven situations are: 1. Sitting and reading 2. Watching TV 3. Sitting, inactive in a public place (e.g., a theatre or a meeting) 4. As a passenger in a car for an hour 5. Lying down to rest in the afternoon 6. Sitting and talking to someone 7. In a car, while stopped for a few minutes in traffic Participants can complete either or both scales depending on parameters. Both use vertical visual analog scales with mouse/touch input.

Device requirements: Desktop, tablet, or mobile device with mouse/touch input

• Fatigue studies
• Sleep deprivation research
• Time-of-day effects assessment
• Shift work studies
• Pre/post intervention alertness measurement
• Screening for excessive daytime sleepiness