14 mth dd has been pulling other people's (me, dp, friends, strangers ...) hair for several months. Seemed to make progress with 'NO' + showing her to stroke instead + giving attention to the victim, and not too concerned previously as she seemed too young to be doing it deliverately or with malice. But has started up again with a vengeance, I think because of leniency over xmas with grandparents and not seeing other little people for a while, so me & dp get most of it. And she definitely knows what she's doing - she'll choose to do the stroke / cuddling instead then she'll grab a fistful of hair and yank it - looking straight at me for the response ! It seems that the bigger a deal we make of it, the better effect it is for her as she gets more attention. The really weird thing is she pulls her own hair (what little there is of it) - really hard, but it doesn't seem to bother her. Does anyone else have similar experience ... biting seems really common problem (she does this too but much less), but I couldn't find any threads about hair pulling - is it only us ?!