关键词: 电视, 认知发育, 视屏时间, 婴幼儿

Abstract: Objective To explore the relationship between screen exposure and developmental behavior of 18 months old children,so as to provide evidence for reducing video exposure in infants. Methods From December 2016 to December 2017, a self-designed questionnaire was used to collect the screen exposure time of 18-month-old infants who underwent 4-2-1 physical examination, and the social demographic characteristics, screen exposure of parents and other information were also collected. ASQ-3 was used to test the communication, physical development and other abilities of infants. Results The average daily screen time was 40. 8 minutes, of which 172 (26. 1%) were more than one hour. Multivariate binary Logistic regression found that infants with screen time more than 1 hour per day had lower risk of severe and mild developmental delay in communication domain aged 18 months old[OR=1. 55(95%CI:1. 05-2. 28), OR=3. 57(95%CI:1. 49-8. 53), respectively], with statistically significant differences (P＜0. 05). Conclusions Longer screen exposure has a negative effect on children's communication development. Public awareness of the impacts of screen exposure in infants should be raised to reduce the occurrence of language retardation in children.

Key words: television, cognitive development, screen time, infants