Meet the tech evangelist who now fears for our mental health

Belinda Parmar was a passionate advocate of the digital revolution – but has started keeping her family’s smartphones and laptops locked away to protect her loved ones. Is she right to be so worried?

YouTube to clamp down on disturbing kids’ videos such as dark Peppa Pig

Site announces measures to flag, review and restrict content that is inappropriate for children but doesn’t breach wider guidelines

Revealed: the more time that children chat on social media, the less happy they feel

Study shows using Instagram, Facebook and WhatsApp can have an adverse effect on self-esteem

Babysitting apps boom as parents bid to reclaim free time

Online, Uber-style booking sites replace grandparents and nursery noticeboards

Screen time v play time: what tech leaders won’t let their own kids do

Steve Jobs and Jonathan Ive designed some of the world’s most desirable tech – but imposed strict limits on their own children using it. What rules do others set?