The brain changes and egocentric thinking contribute to difficulty communicating with teens because the teens' brains are not fully developed yet. Hedaya (2010) stated that the prefrontal cortex of the child's brain is not fully formed until they are in the middle of their 20s. For reference, the prefrontal cortex is associated with the logical part of their brain. As a result, the emotional part of their brain, specifically "the limbic brain," has much greater influence over the teen (Hedaya, 2010). Hence, many decisions made by teens may be more based on what they feel like doing, rather than what is rational, which could lead to conflicts with parents. For instance, a teenager may want to drink underage because it is emotionally pleasing to them. The desire to drink is overruled by the thought that drinking underage could lead to them getting sick or in trouble with the police (prefrontal cortex). The limbic system, or emotional part of their brain, may make them more egocentric in that they only think about their personal desires rather than the consequences.
I think it may be hard for parents to change their parenting styles as they get older because they have gotten accustomed to the way they parented when they were younger. Hedaya (2010) claimed that teens are forming their identities, which may involve exploration. He suggested that parents need to allow their children to explore different identities as they seek different experiences. For instance, parents and teachers can help teens find a new hobby or organization to join. However, parents also need to teach that thei consequences to poor decisions. For example, if a teen gets in a car wreck, then they will have to pay for it (Hedaya, 2010). Some parents may struggle with balancing setting good boundaries for their teen children and allowing them to experience different things and figure out who they are as their children get older.
https://www.psychologytoday.com/us/blog/health-matters/201006/the-teenagers-brain
