Donna is concerned about her adolescent daughter's tendency to flare-up at the mildest provocations. donna says that her daughter refuses to see reason sometimes and is unable to exercise much self-control. as a specialist in the development of adolescents, you would tell donna that her daughter's behavior could partly be explained by the biological reason that
- by the end of adolescence, individuals have fewer, less selective, less effective neuronal connections than they did as children.- the prefrontal cortex—involved in reasoning and self-control—has developed fully by early adolescence.- the amygdala—the seat of emotions such as anger—matures earlier than the prefrontal cortex in adolescents.- the corpus callosum, where fibers connect the brain's left and right hemispheres, thickens in adolescence.

the amygdala—the seat of emotions such as anger—matures earlier than the prefrontal cortex in adolescents.

Explanation:

                       Amygdala is set of neurons in the brain that controls the set of emotions in a person.

                       At the adolescent stage, a person's both physical as well as psychological development takes places and a number of changes occur in the body both physically and emotionally.

                      So Donna's daughter at her adolescent stage is going through the same changes. Donna's daughter gets angry easily and at very small things. She instantly flares up at the slightest provocations.  

As a specialist, I would inform Donna about her child's behavior by explaining the biological reason ---

the amygdala—the seat of emotions such as anger—matures earlier than the prefrontal cortex in adolescents.