Parents often feel isolated and alone in parenting adolescents. Adolescence can be a time of high risk for children, where new-found freedoms can result in decisions that drastically open up or close off life opportunities. There are also large changes occurring in the brain during adolescence; the emotional center of the brain is now fully developed but the rational frontal cortex hasn't matured yet to keep all of those emotions in check. Adolescents tend to increase the amount of time they spend with peers of the opposite gender; however, they still maintain the amount of time they spend with those of the same gender—and they do this by decreasing the amount of time they spend with their parents.