Dr. Turner has made extensive inquiry in the the Sandplay therapy method and has authored a number of books on the subject, including the well-known, Handbook of Sandplay Therapy. Dr. Turner teaches Sandplay psychotherapy to mental health clinicians around the world. Kristín Unnsteinsdottír, PhD, works as the Learning Specialist at a small grammar school in Reykjavik, Iceland, where she helps children with their learning difficulties.