That depends on the children, or rather, the child. Some children are incredibly articulate and focused when they’re 12 or 13 years old. Some other children, who are even older, are unable to articulate what it is that they want and show a good reason. “Daddy lets me play more sports and video games,” is not a reason. However, children that are over the age of 12 or 13, that are willing to be vocal, can voice their opinion, and the court will take it into consideration together with all other factors.