Pedestrians, vehicles, and cell phones.
← Research streamIn a virtual street-crossing task, participants were less likely to successfully cross when engaged in a hands-free cell phone conversation than when listening to music. While conversing on a cell phone, participants took longer to initiate crossing (~1.5 s),…
Study snapshot
Abstract
With cellular phones and portable music players becoming a staple in everyday life, questions have arisen regarding the attentional deficits that might occur when such devices are used while performing other tasks. Here, we used a street-crossing task in an immersive virtual environment to test how this sort of divided attention affects pedestrian behavior when crossing a busy street. Thirty-six participants navigated through a series of unsigned intersections by walking on a manual treadmill in a virtual environment. While crossing, participants were undistracted, engaged in a hands free cell phone conversation, or listening to music on an iPod. Pedestrians were less likely to successfully cross the road when conversing on a cell phone than when listening to music, even though they took more time to initiate their crossing when conversing on a cell phone ( approximately 1.5s). This success rate difference was driven largely by failures to cross the road in the allotted trial time period (30s), suggesting that when conversing on a cell phone pedestrians are less likely to recognize and act on crossing opportunities.
AI evidence extraction
Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.
Main findings
In a virtual street-crossing task, participants were less likely to successfully cross when engaged in a hands-free cell phone conversation than when listening to music. While conversing on a cell phone, participants took longer to initiate crossing (~1.5 s), and the lower success rate was largely due to failures to cross within the 30 s trial period, suggesting reduced recognition/acting on crossing opportunities.
Outcomes measured
- Pedestrian street-crossing success rate
- Time to initiate crossing
- Failures to cross within allotted trial time (30 s)
Limitations
- Frequency/SAR and RF exposure metrics were not reported; the manipulation appears to be behavioral (conversation) rather than quantified EMF exposure.
- Small sample size (n=36).
- Virtual environment and treadmill task may not generalize to real-world street crossing.
View raw extracted JSON
{
"study_type": "other",
"exposure": {
"band": null,
"source": "mobile phone",
"frequency_mhz": null,
"sar_wkg": null,
"duration": null
},
"population": "Participants performing a street-crossing task in an immersive virtual environment",
"sample_size": 36,
"outcomes": [
"Pedestrian street-crossing success rate",
"Time to initiate crossing",
"Failures to cross within allotted trial time (30 s)"
],
"main_findings": "In a virtual street-crossing task, participants were less likely to successfully cross when engaged in a hands-free cell phone conversation than when listening to music. While conversing on a cell phone, participants took longer to initiate crossing (~1.5 s), and the lower success rate was largely due to failures to cross within the 30 s trial period, suggesting reduced recognition/acting on crossing opportunities.",
"effect_direction": "harm",
"limitations": [
"Frequency/SAR and RF exposure metrics were not reported; the manipulation appears to be behavioral (conversation) rather than quantified EMF exposure.",
"Small sample size (n=36).",
"Virtual environment and treadmill task may not generalize to real-world street crossing."
],
"evidence_strength": "low",
"confidence": 0.74,
"peer_reviewed_likely": "yes",
"keywords": [
"pedestrians",
"divided attention",
"cell phone conversation",
"hands-free",
"portable music player",
"virtual environment",
"street crossing",
"accident prevention"
],
"suggested_hubs": [
{
"slug": "mobile-phones",
"weight": 0.6,
"reason": "Study involves hands-free cell phone conversation during a pedestrian task; no RF exposure metrics reported."
},
{
"slug": "distracted-walking",
"weight": 0.85,
"reason": "Primary focus is attentional distraction and pedestrian safety while using a phone."
}
]
}AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.
Identifiers and source
DOI: 10.1016/j.aap.2009.10.004
PubMed: 20159083