Affective Component in the Education of the Gifted

Imagine a third grade student, Joe, who is academically gifted, but is such a behavior concern that he is placed in a self-contained special education classroom where most of the students are children with mental retardation. How might such a placement happen? Might it be because Joe never had support in developing social skills? Did Joe not have a curriculum that addressed his affective needs? Given Joe and other similar students, teachers may need to integrate an affective component into their curriculum for gifted students.