Elaine wakes up in the middle of every night and wants to join her parents in bed. Elaine's parents could help her sleep through the night in her own bed by

providing a transitional object that is reserved especially for bedtime use.

Explanation:

A transitional object in psychology, is a term that describes an object of comfort or security blanket which is used specifically to provide psychological comfort often for children or babies in a different or peculiar conditions or mostly during time of sleeping.

Specifically when it comes to little children transitional objects can either be a blanket, a stuffed animal, or a favorite toy, and can be given special names, this helps children to sleep better.

Hence, in this case, Elaine's parents could help her sleep through the night in her own bed by " providing a transitional object that is reserved especially for bedtime use."

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