There’s a new secret to get your child to behave at the dinner table—cut up their food and they’ll relax.

A new Cornell study published in Eating Behaviors, found that when 6-10 year old children ate foods they had to bite with their front teeth— such as drumsticks, whole apples, or corn on the cob— they were rowdier than when these foods had been cut. “They were twice as likely to disobey adults and twice as aggressive toward other kids,” said Brian Wansink, Professor and Director of the Cornell Food and Brand Lab.