Mary HartzellMary Hartzell, MEd, received her master’s degree in early-childhood education and psychology from UCLA, and is a child-development specialist and parent educator. She has taught children, parents, and teachers for more than 30 years, and has been thedirector of a highly respected Reggio-inspired preschool in Santa Monica, California. Her parent-education classes and CD series on parent–child relationships have improved the lives of children and their families for decades. Read More Read Less