Experts have warned that parents who allow babies and toddlers to access tablet computers for several hours a day are in danger of causing “dangerous” long term effects. The youngest known patient being treated in the UK is a four-year-old girl from the South East. Her parents enrolled her for compulsive behaviour therapy after she became increasingly “distressed and inconsolable” when the iPad was taken away from her. Her use of the device had escalated over the course of a year and she had become addicted to using it up for to four hours a day. Dr Richard Graham, who...