Click For Photo: https://i.dailymail.co.uk/1s/2019/04/17/14/12388474-0-image-a-5_1555507256678.jpg
Toddlers who spend hours staring at screens every day are more badly behaved by the time they are five, a study has claimed.
Pre-school children who use smartphones, tablets and other gadgets for more than two hours a day are also seven times more likely to develop ADHD.
Screen - Time - Impact - Child - Development
The screen time has a 'significant impact' on the child's development, researchers said as they warned parents need to cut it down.
One author of the study suggested this is because time spent looking at screens is time taken away from healthier activities such as sport or sleep.
Hour - Day - Amount - Pre-school - Children
Just half an hour per day, or even less, would be the optimum amount for pre-school aged children, according to the researchers.
But experts in the field immediately dismissed the findings as having 'critical shortcomings' and doing nothing to prove the screen time had actually caused the bad behaviour.
Scientists - University - Alberta - Families - Children
Scientists at the University of Alberta studied more than 2,400 families and found children glued to screens have more significant behavioural problems.
As well as a higher risk of attention deficit hyperactivity disorder (ADHD), those exceeding two hours per day were five times more likely to be inattentive.
Time - Impact - Years - Age - Dr
'We found screen time had a significant impact at five years of age,' said Dr Piush Mandhane.
Three-year-olds in the study spent an hour-and-a-half, on average, looking at screens every day. This fell slightly to 1.4 hours for five-year-olds.
Researchers - Time - Effect - Child - Behaviour
The researchers found screen time may even have a bigger effect on a child's behaviour than how much sleep they get or how stressed their parents are.
And this may be because it takes away from other aspects of life which could reduce the risk of attention problems.
Dr - Mandhane - MailOnline - Data - Leads
Dr Mandhane told MailOnline: 'Our data suggests that more screen-time leads to less sleep-time.
'Developing a regular sleep routine, consistent wake and bed times that limit screen-time prior to bed,...
Wake Up To Breaking News!
Never argue with an idiot, the spectators may not be able to differentiate between you.