Rooney turns 20 in October and is aware he will no longer be able to justify any shows of petulance by pointing to his teenage years.
"Moving to a club like Manchester United was always going to benefit me a lot, playing with the players I'm playing with and working with Sir Alex [Ferguson]," Rooney said.
During his first year at Old Trafford, after leaving Everton, Rooney was criticised by a Welsh head teacher for repeatedly swearing on the pitch, with the argument that he was setting a bad example to youngsters. "I've learnt a lot and I think I've matured a lot, both on and off the field. I think I had to move on [from Everton], for myself, and I think it has really benefited me," he added.
He is increasingly aware of the responsibility on his shoulders from both a sporting and a disciplinary perspective.
"I'm looking to mature a lot more than I have done in previous seasons," Rooney said. "I want to make sure I don't get booked for dissent. If you look at any match, every player's doing it. But it gets highlighted a lot more because of who I am." He added: "I'm looking to cut out the silly bookings."
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