Dr. Katharine Dunson O'Connell, PhD, L.P. is a child clinical psychologist, family and community educator, and independent consultant. She specializes in early childhood development and the neuroscience of attention deficit disorder, learning issues, anxiety and depression, and related psychological conditions. Dr. O'Connell earned her bachelor's degree in Psychology and Writing-Intensive English from Marquette University in 1990, and her Master's and PhD degrees in Child Clinical Psychology from DePaul University in 1996. She completed her clinical training at the University of Chicago. Dr. O'Connell resides in Wellesley, Massachusetts USA with her husband and four children. She currently serves on the Board of Trustees of the Walnut Hill School For The Arts.

Lisa Regan is the author of more than 200 published titles, including puzzle books, children's reference, licensed characters and curriculum-linked workbooks.

Mel Howells has been drawing seriously since the age of seven when she discovered she could draw horses legs. She worked as a bookseller and in publishing but always preferred doodling. She draws using ink, watercolour and scratchy dip pens. She has a tiger-striped rescue lurcher named Ted and loves travelling to interesting places.