Blakemore found that teenagers rely on the rear part of the mentalising network to make their decisions, an area of the brain called the superior temporal sulcus. In contrast, adults use the front part, called the prefrontal cortex.
The superior temporal sulcus is involved in processing very basic behavioural actions, whereas the prefrontal cortex is involved in more complex functions such as processing how decisions affect others. So the research implies that "teenagers are less able to understand the consequences of their actions", says Blakemore. ~Helen Thomson, Norwich, Why Adolescents put themselves first
The article interprets the implication of the finding as authorities should be more lenient on teenagers. My take is that we need to be more protective of teenagers until their brains are fully developed. What does this have to do with Apologetics? Well I guess it helps us better understand a group of people that we minister to.