How does Jensen present herself as an expert in adolescent neuroscience? What effect does her expertise have on the narrative?

In Jensen’s introduction, she states that her aim is to give parents greater insight into their teenagers’ brains. What techniques does she use to achieve her goal?

Look at a scientific journal article on neuroscience cited in the book and compare its language to the way Jensen describes it in the book. How does she describe science in comparison to the article?