First person point of view, and an unreliable narrator. Having it like that means he can go into the depth of the phycology of the character
When it is first person POV and you say something like "Becky was jealous of Debby as she walked by and caught all the boys attention."
Answer: The prefrontal cortex contributes to a wide variety of executive functions, including focusing one's attention, predicting the consequences of one's actions, and anticipating events in the environment.
Hope this helps!