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Daytime Sleepiness Perception Scale - 4 (DSPS-4)

Title of the Portuguese Version

Escala de Perceção da Sonolência Diurna

Original Version

Marques, D., Gomes, A., & Azevedo, M. H. (2017)

General Description

The DSPS-4 is a brief measure comprising only 4 items which aims to assess sleepiness perception as a trait, thus, no specific time frame is indicated in the instructions. The score results from the sum of the 4 items, resulting in a total composite score. The available response options are never (0), rarely (1), often (2), almost always (3), and always (4). The scores may range from 0 to 28 points.

  • Marques, D., Gomes, A., & Azevedo, M. H. (2017). DSPS-4: A brief measure of perceived daytime sleepiness. Current Psychology. doi:10.1007/s12144-017-9638-0. http://hdl.handle.net/10316/46844


Daniel Ruivo Marques – drmarques@ua.pt