You can help strengthen your child’s interpersonal intelligence by:

Asking her to help younger siblings or other children with their school work. Giving her the responsibility to help determine where the family will go on vacation this year, requiring her to survey other family members and presenting their findings at a family meeting. Encouraging her to join academic study groups or to form her own study group. Allowing her to volunteer in the community.

Source: The Association for Supervision and Curriculum Development’s Professional Development Online