Enneagram 5 Child
Enneagram five I love to call the Practical Child. They see the world in a logical way. They prefer to be alone and may hide themselves away. They might hide from overbearing parents, parents that don't show deep love or too many siblings. They will play by themselves for a long period of time. The might be computer wiz, book readers and collectors.
They aren't in tune with their feelings and don't recognize the feelings of others. Think Sheldon from The Big Bang Theory. School they might love because of the challenge it brings but they struggle with the social aspects. They have a hard time being silly and vulnerable.
All types have a wounded message but they wounded message might be that "fives can't handle the emotional connection." Which might help you to understand why they behave the way they do. They might be spacey and aloof.
If you have a type 5 child allow them the space and freedom they desire. Do not force socialization on them. Make sure to take time to get to know their interests and passions.