A quick search surfaced this study: https://hechingerreport.org/why-your-toddler-cant-learn-from-a-screen/ https://hechingerreport.org/why-your-toddler-cant-lea

A quick search surfaced this study: https://hechingerreport.org/why-your-toddler-cant-learn-from-a-screen/ https://hechingerreport.org/why-your-toddler-cant-learn-from... GP said studies, plural. I cannot confirm that. But the linked study is consistent with what I observed in my child when he was a toddler.