I take back my comment about not being familiar with these. I just googled "Scary Stories To Tell In The Dark" and came up with this cover...
...which I DO actually remember from my childhood. I don't remember anything specific but I'm pretty sure I read or heard at least some of them.
One story I clearly remember from my childhood, which scared the ever-loving crap out of me, is this: There was this woman who always wore a ribbon around her neck. She never took it off, even around her husband. He sometimes asked her about it but the only thing she'd ever say about it was it could never, under any circumstances to be removed. After many years of this, the husband's curiosity finally got the best of him and he untied the ribbon while she was asleep. When he did so her head fell right and rolled onto the floor screaming, "I told you never to untie the ribbon!"
Is that from this author?