"Increased screen time at the age of 2 and 3 was associated with delays in achieving development milestones at ages 3 and 5, respectively," she said. "This study shows that over-use screen time can have consequences for children's development, and parents can think of screens as if they give junk food to their children: in small doses, that's fine, but in excess Follow. "
The new study included data on 2,441 Mothers and children in Canada. The mothers were recruited for the study during their pregnancy between 2008 and 2010, and data were collected between 2011 and 2016.
For each child of the study, the mother completed questionnaires that related to the child's performance in developmental tests at age 24 years 36 and 60 months. Mothers also reported the length of time their children spent on VDUs on a typical day of the week and at weekends.
The researchers found that a longer screen time at 24 months was associated with poorer performance in developmental tests after 36 months and a larger screen. The time after 36 months was associated with lower scores on screening tests at development after 60 months ,
Although the researchers did not numerically examine the relationship between screen time and developmental outcomes, they found "a stable association" between screen time and screening for children test scores that, according to the study, were not considered by other factors.
The average screen duration for children aged 24, 36 and 60 months in the study was about 2.4, 3.6 and 1.6 hours per day who found research of hers.
"To our knowledge, the present study is the first to demonstrate a direct correlation between screening time and poor performance in screening tests in development in very young children," the researchers write.
The study had some limitations, including the fact that some of the data was reported by the mothers themselves and that devices can evolve rapidly over time, which can affect screen time.
The first evaluations of the children in the study were done after 24 months. Evaluations starting after 12 or 18 months could have resulted in more data.
Most importantly, just because a correlation has been found between excessive screen time and poorer child development, this does not mean that excessive screen time will cause worse development.
"Our study identifies a connection between two things and this does not mean that this is the case one causes the other," said Madigan.
"The conclusions are too strong for the method used," said Przybylski, who was not involved in the study.
"It is noteworthy that the screen already reduced the sleep of both children even at this early stage. The age and reduced reading of children to children, which we know to be a strong predictor of positive child outcomes, like one higher IQ, "said Gentile, who described the new study as" strong "and" well-managed. " The American Academy of Pediatrics provides guidelines that help families manage children's screen time. These guidelines include avoiding digital media for infants under 18 to 24 months old, with the exception of video chat.
Overall, "the good news is that screen time can be controlled by parents," Gentile said. "In other studies, we found that if parents limit the amount and content of child screen media, it is a strong protective factor for a wide range of child health and wellness indicators."