2023 Volume 9 Issue 3 Pages 24-36
There are concerns about the existence of metamessages at the scene of receiving test result notifications regarding cognitive function test for older drivers. In this study, we conducted a web-based survey experiment consists of a pre-test questionnaire, a simulated cognitive function test, presenting of the notifications of test results, and a post-test questionnaire targeting 2,000 drivers aged 65 or older, in order to measure the effects on the notifications of test results that the designs and layouts were changed to ease the metamessages. First, the results of the exploratory analysis between individual attributes and the susceptibility of metamessages revealed that the scores of "confidence in driving" and "self-evaluation of driving" increased on women and elderlies. It can be said that this is a side effect not intended by the survey designers. Second, compared to the current notifications of test results, the revised notifications of test results which took measures to ease the metamessages significantly decreased "confidence in driving" in post-tests.
