Dr Justin Coulson's Happy Families

What happens when you strip your smartphone of its “smart”? In this Doctor’s Desk deep dive, Justin and Kylie unpack a groundbreaking new study showing what really happens when people block mobile internet on their smartphones. The results? Better focus. Improved wellbeing. Healthier screen habits. Drawing on the science, personal experience, and insights from Jonathan Haidt and game designers themselves, this episode offers a wake-up call—and a way forward—for families navigating digital overload. KEY POINTS First-of-its-kind research: A randomised controlled trial published in PNAS Nexus found that blocking mobile internet improved sustained attention, mental health, and subjective wellbeing. 91% improved: Nearly all participants in the study saw measurable gains by turning off mobile internet for just two weeks. How behaviour changes: People spent more time socialising, exercising, and being in nature—activities that are strongly linked to happiness and resilience