کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
897989 | 915216 | 2011 | 13 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The impact of a naturalistic hands-free cellular phone task on heart rate and simulated driving performance in two age groups The impact of a naturalistic hands-free cellular phone task on heart rate and simulated driving performance in two age groups](/preview/png/897989.png)
Heart rate and driving performance were assessed while late middle age (51–66) and younger adults (19–23) engaged in a naturalistic hands free phone task that was designed to place objectively equivalent cognitive demands on all participants. Although heart rate measures have been used in evaluating driver workload, prior studies had not compared responses in late middle age and younger adults with samples of sufficient size to begin to explore possible age relationships. In an evaluation of 37 participants, the two age groups displayed equivalent performance on the cellular telephone task and concurrent decrements in speed control (SD velocity). It was observed that the late middle age subjects drove more slowly overall and, as a group, did not demonstrate heart rate acceleration in response to the phone conversation that was seen in younger drivers. The possibility that age group differences in heart rate response are related to individual differences in attentional focus is raised. While there are significant reasons to discourage all individuals from engaging in phone conversations and other distracting tasks while driving, late middle age adults appeared as capable as young adults of managing the additional workload of a low to moderately demanding cognitive task of the type assessed. The tendency of individuals to adopt self-regulatory behaviors, such as a lower overall driving speed, as a function of age/experience may account for the equivalence in overt performance.
Research highlights
► Young and late middle age drivers performed similarly on a cellular phone task.
► Both groups showed decrements in speed control (SD of velocity).
► Only the younger drivers as a group showed heart rate acceleration during the task.
► Group means were found to obscure individual differences in heart rate response.
Journal: Transportation Research Part F: Traffic Psychology and Behaviour - Volume 14, Issue 1, January 2011, Pages 13–25