Effects of practice, age, and task demands, on interference from a phone task while driving

Area of Science:

• Human-Computer Interaction
• Cognitive Psychology
• Transportation Safety

Background:

• Cellular phone use while driving poses significant risks, impairing driving functions.
• Previous research limitations include lack of repeated dual-task conditions, unrealistic phone tasks, and experimenter-paced scenarios.
• Real-world driving involves adaptive task management and pacing by drivers.

Purpose of the Study:

• To investigate the effects of hands-free cellular phone conversations on driving performance in a simulated environment.
• To examine learning effects and the impact of different phone task types on driving.
• To assess how driving demands and driver age influence the interference from phone conversations.

Main Methods:

• A simulated driving environment was used with participants engaging in five sessions of dual-tasking (driving and phone use).
• Two types of hands-free phone tasks were employed: artificial math operations and emotionally involving conversations.
• Driving performance measures were recorded, and learning effects over repeated sessions were analyzed.

Main Results:

• A learning effect was observed across most driving measures with repeated dual-task exposure.
• Interference from phone tasks on driving performance decreased over time.
• Interference was greater for the math operations task compared to the conversation task, with higher driving demands, and in older drivers.

Conclusions:

• Initial driving impairment from cellular phone use is significant but can be mitigated through practice.
• The type of phone task and individual driver characteristics (age, experience) modulate the impact of distractions.
• Adaptive strategies and learning can reduce the negative effects of phone conversations on driving safety over time.