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Hazard anticipation of young novice drivers - SWOV

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Participants were requested to press with one <strong>of</strong> their fingers on the touch<br />

screen the location <strong>of</strong> the acute threat as soon as they had detected the<br />

immanent hazard. The reaction time was measured. The assumption was<br />

that the reaction times <strong>of</strong> experienced <strong>drivers</strong> would be shorter than the<br />

reaction times <strong>of</strong> <strong>novice</strong> <strong>drivers</strong>, as domain specific knowledge speeds up the<br />

reaction time in change detection flicker paradigm tasks. The results were in<br />

the opposite direction <strong>of</strong> the hypothesis. The reaction times <strong>of</strong> <strong>novice</strong> <strong>drivers</strong><br />

were significantly shorter than the reaction times <strong>of</strong> experienced <strong>drivers</strong>. It<br />

could be that the hazards were so obvious (i.e. immanent) that it was equally<br />

easy to detect these hazards for <strong>young</strong> <strong>novice</strong> <strong>drivers</strong> and older, more<br />

experienced <strong>drivers</strong>. As <strong>young</strong> people have shorter reaction times in general,<br />

the <strong>young</strong> <strong>novice</strong> <strong>drivers</strong> had shorter reaction times on this task than older,<br />

more experienced <strong>drivers</strong>. It would be <strong>of</strong> interest to test if the reaction times<br />

are in the expected directions when instead <strong>of</strong> immanent hazards, latent<br />

hazards are used.<br />

4.1.4. Suitable tasks for testing the hypotheses<br />

In order to test the first and the third hypothesis, a hazard <strong>anticipation</strong> test is<br />

required that measures performance <strong>of</strong> which can be inferred if participants<br />

have detected and recognized overt latent hazards and covert latent hazards.<br />

Of all the discussed methods in Section 4.1.3, only the method applied by<br />

Jackson et al. (2009) in which participants had to predict what could happen<br />

next, is suitable to measure if participants have detected and recognized not<br />

only overt latent hazards but also covert latent hazards. When the video clip<br />

has stopped and the screen has turned black, participants can mention that<br />

for instance from behind the lorry that blocks the view a vehicle may emerge<br />

on collision course (covert latent hazard) and they can for instance also<br />

mention that a visible pedestrian on the pavement may suddenly cross the<br />

road in order to catch the bus (overt latent hazard). If the eye movements are<br />

measured before a video clip stops it is also possible to measure if<br />

participants have looked in the direction <strong>of</strong> covert latent hazards or overt<br />

latent hazards they have mentioned. Are there for instance differences<br />

between <strong>young</strong> <strong>novice</strong> <strong>drivers</strong> and older, more experienced <strong>novice</strong> <strong>drivers</strong> in<br />

anticipatory eye glances and verbal responses about what could happen<br />

next?<br />

The task with photographs (safe, potentially hazardous and hazardous) that<br />

Kelly et al. (2010) and Huestegge et al. (2010) have applied, seems to be the<br />

most promising to measure the emotional aspect <strong>of</strong> hazard <strong>anticipation</strong>.<br />

Detection <strong>of</strong> (latent) hazards on photographs appeared to be relatively easy<br />

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