Print Email Facebook Twitter Measuring being lost in thought: An exploratory driving simulator study Title Measuring being lost in thought: An exploratory driving simulator study Author Martens, M.H. Brouwer, R.F.T. Publication year 2013 Abstract In driver behaviour research there is considerable focus on distraction caused by specific external systems, such as navigation systems or mobile telephones. However, it is not clear whether self-paced actions such as daydreaming have the same negative effects on driving behaviour. In a driving simulator study, the effects of an internal cognitive process (internal distraction) on driving behaviour and physiological data were compared to the effects of a sound and speech task (external distraction). Three groups of participants made two drives on a motorway, with one control group, one internal distraction group and one external distraction group. Dependent measures included driving behavioural measures, physiological measures and a subjective indication of participants' experienced involvement in the driving task. The effects of both the internal and external distraction task were reflected in speed, number of lane changes, deceleration, glances and subjective ratings. When an effect was found for both the internal and the external distraction task, the results indicated similar (negative) effects. Participants also indicated that they had the feeling they were less involved in the driving task with both secondary tasks. © 2013 Elsevier Ltd. All rights reserved. Subject HumanPCS - Perceptual and Cognitive SystemsBSS - Behavioural and Societal SciencesSafe and Clean MobilityTrafficMobilityCognitive distractionDriving performanceDriving simulatorLost in thoughtPhysiological measures To reference this document use: http://resolver.tudelft.nl/uuid:1fa9e7f4-081f-473f-bd9c-2cc877d768fd DOI https://doi.org/10.1016/j.trf.2013.04.002 TNO identifier 473187 ISSN 1369-8478 Source Transportation Research Part F: Traffic Psychology and Behaviour, 20, 17-28 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.