AvatarCynrhia Kabischflipped into BuzzfeedFlipboardIcon version of the Flipboard logoParents are being warned that this common pastime is being scientifically linked to abnormal behaviour in toddlers - but will you be ditching it?goodto.com - Selina MaycockParents are being warned that this common pastime has been scientifically linked to abnormal behaviour in toddlers - but will you be ditching …