Around ages three or four, kids start to explore defiance, meaning they discover the word “no.” Kirsten Kachuk, registered psychologist and program supervisor at CASA Mental Health, joined Global Morning News Edmonton to explain why it is such a huge part of preschoolers’ vocabularies, and offer productive ways for parents to respond.

Watch CASA on Global News Morning Edmonton at 7:20 on the first Thursday of every month. Each “Your Mental Health” segment features a specialist from CASA talking about relevant mental health topics to children and families in our community.