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Cognitively Demanding Object Negotiation While Walking and Texting.

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Using cell phones while walking increases pedestrian collisions with obstacles. Cognitive abilities like attention and flexibility impact performance, especially in complex environments, highlighting distraction risks.

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Area of Science:

  • Human-computer interaction
  • Neuroscience
  • Transportation safety

Background:

  • Pedestrian injuries linked to cell phone use are rising.
  • The specific impact of cell phone use on obstacle avoidance is not well understood.

Purpose of the Study:

  • To investigate how cell phone use affects obstacle avoidance in pedestrians.
  • To determine the role of cognitive capacity in mediating these effects.

Main Methods:

  • Thirty healthy adults walked on a treadmill in a virtual reality environment.
  • Participants engaged in a texting task concurrently with navigating varying levels of object complexity.
  • Cognitive capacity was assessed using standard tests.

Main Results:

  • Cell phone use resulted in increased collisions and delayed responses during object negotiation.
  • Cognitive complexity of the navigation task further delayed responses.
  • Baseline attentional capacity inversely correlated with collisions during cell phone use.
  • Cognitive flexibility predicted better performance when multitasking.

Conclusions:

  • Cell phone use while walking acts as a visual distraction, impairing obstacle negotiation.
  • Cognitive abilities are crucial for safe navigation when multitasking.
  • Performance deficits are most pronounced in cognitively demanding situations.