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Impact of meaning and difficulty level of an audio-verbal task in Short-Term Memory (STM) performance while driving by simulator
Seyedeh Monavar Yazdi, Hassan Asilian Mahabadi, Mostafa Pouyakian, Ebrahim Hajizadeh,
Volume 10, Issue 2 (7-2013)
Abstract

Background and aims:

Traffic safety has been influenced by mobile phone induced distraction

while driving and related car crashes. The effects of audio-verbal tasks on driving performances like

break reaction time, hazard detection time and deviation from lane have been studied by many

researchers. But driver’s audio-verbal performance in has not received more attention. The effect of

driving task on conversation task and vice versa can be determined by evaluating conversation

performance and can explain how drivers prioritize two tasks.

Methods:

In this experimental study remembering of negative and positive words by 52 young (23

t0 35 years old) male participants while driving a simulator was examined.

Results:

Results revealed that Short-Term Memory (STM) performance is influenced by difficulty

level of audio task and road type. The Wilcoxon test for nonparametric paired data showed that

mean rank for remembered words in two-way roads is greater than one way roads and this

difference is statistically significant. Also this test has performed for considering the effect of

word’s semantic content on STM performance and showed that there is no statistically significant

difference between remembered positive words and negative ones. Negative and significant

correlation found between age and driving experience with remembering words

Conclusion:

These findings shows that driver’s STM performance while driving is related to limited

capacity of short-term memory in one hand and is influenced by driving circumstances like speed

and road type on the other hand. More studies have suggested determining the effect of semantic

content of auditory task on STM performance while driving.


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