It is one of the later sounds that many children develop and it is not unusual to still have some difficulty at age five.
Here's how to look for opportunities to let your child share their opinions and to foster their individuality.
Find out what Dr Susan Dundas, Child Psychiatrist at the Hincks-Dellcrest Centre, has to say on the topic of fear based responses in children.
Is your child really incapable of some tasks, or just brilliant at playing dumb?
Find out what Dr Marshall Korenblum, Psychiatrist-in-Chief at the Hincks-Dellcrest Centre, has to say on the topic of medication for a child's mental health problem.