My 6.5 year old has always been a very easy going child who has never had any problems sleeping over and staying at friends or families houses for a night or two. This is a child who at the age of 2.5 months started staying over family members homes, etc...............never, EVER, has there been any problems. He always has so much fun he runs off without even saying goodbye and almost forgets we exist, I think...until recently. All of a sudden, he no longer wants to sleep over people's houses--because he misses us too much, and sometimes, if he even goes over his friends house for the day, he gets upset when I leave. I am thinking this is just a developmental phase...and possibly some anxiety about starting 1st grade in a new school in about two weeks. Has anyone else ever experienced this? And, yes, I work in the child protection field and I have already thought about him experiencing some sort of trauma, but I have pretty much ruled that possibility out. Any thoughts?