More than 700 parents took part in a survey that found 75% of children use a touchscreen on a daily basis. A link between levels of use and a reduction in daily sleep was found; however this one-off assessment does not prove that one thing has caused the other. Many other environmental influences may be involved. Also, despite some of the more worrying headlines, such as The Daily Telegraph's "Ipads could hinder babies' sleep and brain development," the researchers did not look at the effect on developmental milestones. This is an area certainly worth researching, given the rise of "touchscreen toddlers".