The sound of a mobile phone ringing affects the complex reaction time of its owner.

Arch Med Sci · 2012 · PMC3506222 · PMID 23185201

Europe PMC DOI

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may be significantno p-value reported

Although further research carried out in more realistic driving conditions is required for accurate determination of the influence of a ringing phone on a driver, these study results suggest that this influence may be significant.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.