Hazard anticipation of young novice drivers - SWOV

5.2.6. Overt and covert latent hazards
A distinction was made between clicks on overt latent hazards and clicks on
covert latent hazards. In total, there were thirty-two overt latent hazards and
eleven covert latent hazards. The mean percentages correct clicks on overt
latent hazards were: M = 30.0 (SE = 3.4) for learner drivers, M = 37.9 (SE = 2.2)
for novice drivers and M = 34.7 (SE = 3.2) for experienced drivers. ANOVA
showed there was no significant difference between the groups with regard
to clicks on overt latent hazards, F(2,137) = 1.91, p = .15. In the group of novice
drivers, male novice drivers clicked on 42.4% of the overt latent hazards and
female novice drivers on 32.2% of the overt latent hazards. This difference
was significant and had a small effect size, t (72) = 2.16, p < .05, η 2 P
= .056. In
the other two groups, male drivers did not differ significantly from female
drivers with regard to clicks on overt latent hazards. No significant
differences were found with regard to clicks on overt latent hazards between
the crash free novice drivers and the novice drivers that had reported at least
one crash, t (74) = 1.05, p = .30.
The mean percentages correct clicks on covert latent hazards were: M = 48.9
(SE = 3.7) for learner drivers, M = 47.6 (SE = 2.4) for novice drivers and M =
43.6 (SE = 3.5) for experienced drivers. ANOVA showed there was no
significant difference between the groups with regard to covert latent
hazards, F(2,137) = 0.62, p = .54. In all three groups, male drivers did not differ
significantly from female drivers with regard to covert latent hazards. No
significant differences were found with regard to clicks on covert latent
hazards between the crash free novice drivers and the novice drivers that
had reported at least one crash, t (74) = 0.28, p = .78
5.2.7. Scores on the photo task
Analysis of the final scores
The internal reliability of the scores on the eighteen photographs of the photo
task was acceptable, α = .68. Figure 5.5 shows the boxplot of the results.
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