Yi Yeong-ae (F) graduated from the Department of Child Welfare at Sookmyung Women's University and received her Ph.D in Child Counseling from the graduate school of the same university. She is currently working as a professor of play therapy at Sookmyung Women's University Graduate School of Social Education, and she previously worked as director of Wonkwang Child Counselling Institute and head of the Korean Association for Play Therapy.

She has made TV appearances on 60-Minute Parent and the EBS Documprime episodes "Child's Privacy," "Perfect Baby" and "Revolt of Play," as well as on various childcare broadcasting programs on MBC, KBS and SBS, to introduce ways to understand the minds of children. Books she has written include Mom is a Play Specialist and My Child's Social Skills.