TY  - JOUR
PY  - 2022//
TI  - A subjective one-item measure based on NASA-TLX to assess cognitive workload in driver-vehicle interaction
JO  - Transportation research part F: traffic psychology and behaviour
A1  - von Janczewski, Nikolai
A1  - Kraus, Johannes
A1  - Engeln, Arnd
A1  - Baumann, Martin
SP  - 210
EP  - 225
VL  - 86
IS  - 
N2  - This research introduces requirements for subjective instruments that assess the cognitive workload of in-vehicle information systems (IVIS) while driving. The suitability of 11 existing subjective instruments is evaluated, but none of the instruments matches all of the proposed requirements for this specific scenario. Therefore, a new subjective one-item measure is presented. The one-item measure is based on the mental dimension of the NASA Task Load Index (NASA-TLX) questionnaire. It combines the discussed requirements for IVIS research, e.g., time-efficiency and descriptiveness for non-expert participants. A series of three studies with 107 participants overall was conducted to verify the suitability of the measure. The results show that the instrument discriminates effectively and is valid between different levels of cognitive workload. The results are stable across different experimental setups and samples, and the instrument shows high sensitivity even in non-critical cognitive load levels.<p />  <p>Language: en</p>
LA  - en
SN  - 1369-8478
UR  - http://dx.doi.org/10.1016/j.trf.2022.02.012
ID  - ref1
ER  -