After producer Joe was beaten by a 13-year-old in tennis, he expressed concern about how the kid's parents were coaching and pushing her from the side-lines.
So how much is too much when it comes to pushing your kids to succeed in sport? Psychologist Dougal Sutherland joins to discuss.
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John Cowan: Teaching your kids to drive
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Dougal Sutherland: Does telling your kids to 'be yourself' just lead to bullying?
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Sara Chatwin: Psychologist chats parents' sideline behaviour
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