Chen Yu and Linda B. Smith. «The Social Origins of Sustained Attention in One-year-old Human Infants», Current Biology 26, no. 9 (May 9, 2016): 1235–40.

Indiana University, «Infant Attention Span Suffers When Parents’ Eyes Wander During Playtime: Eye-tracking Study First to Suggest Connection between Caregiver Focus and Key Cognitive Development Indicator in Infants», ScienceDaily, 8 апреля 2016, www.sciencedaily.com/releases/2016/04/160428131954.htm.