Book reading Adult 1 Cellular telephones 1 Child 1 Children's books 1 Cues 1 Developed countries 1 E-book collection 1 Frequency of use 1 Humans 1 Language Development 1 Learning 1 Mobile devices 1 Mobile phones 1 Narration 1 Neural synchrony 1 Reading 1 Reading frequency 1 Telephone sets 1 Word learning 1 Young children 1 Young peoples 1 adult 1 article 1 association 1 child 1 clinical article 1 fNIRS 1 female 1 functional near-infrared spectroscopy 1