I think in Howard Gardner's intelligence theory, this might perhaps involve more intrapersonal intelligence than average. But there are artists and writers who prefer a great deal of time alone, too. And even among those with kinesthetic intelligence, there are some who prefer hiking, climbing or skiing. There are those who practice sleight-of-hand and juggling for many hours alone. There are musicians who play a thousand hours in private for every hour they might share with others.
When such children are in school, they find ways to make themselves invisible if they can. The advantages of being home are abundant for those with such inclinations.
photo by Gail Higgins