Over a third of parents (39 percent) let their children play games such as Call of Duty and Grand Theft Auto, despite not being suitable for their age group, says MyVoucherCodes.co.uk.
According to the online discounts website, a further 25 percent admitted they had played the game with them.
The research also revealed that over half of parents (53 percent) let kids watch 15- or 18-rated films such as Borat and The Saw series, while 66 percent are okay with their children listening to music with explicit lyrics from artists such as Eminem and Jay-Z.
Mark Pearson, managing director of MyVoucherCodes.co.uk, said: "I was surprised by how many parents have actually allowed their child to watch a film, play a game or listen to music knowing that they weren't old to do so. I think that every child is different and what is right for one might not be for another, but I do think that ratings are there for a reason, so parents should execute some caution on deciding what they should expose their children to."
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This story, "39% of parents let kids play unsuitable computer games" was originally published by PC Advisor (UK).