Peak-End Effects for Subjective Mental Workload Ratings

Autor: Doug Peterson, Denis Kozhokar
Rok vydání: 2017
Předmět:
Zdroj: Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 61:2052-2056
ISSN: 1071-1813
2169-5067
DOI: 10.1177/1541931213601991
Popis: The present study examines the possible impact of the peak-end rule as it applies to the measurement of subjective workload. Researchers presented participants with the same three tasks presented in a different order and asked participants to rate the workload of the entire session using a single item rating scale and the NASA-TLX. One of the three tasks was designed to be more challenging than the other two as confirmed by a manipulation check. When the challenging task was presented last in the session, there were significantly higher ratings on the TLX-mental demand and TLX-effort subscales. The overall NASA-TLX and the single item rating scale both produced scores that were higher when this challenging task was last but did not reach statistical significance. Future research regarding subjective mental workload should be careful to consider these end-effects as a potential source of bias.
Databáze: OpenAIRE