Extroverted Intuition (Ne): Scout has an avid imagination. She loves all the differing stories she hears about Boo Radley and is distraught when she finds out that she will no longer be able to read stories with Atticus before bed. She’s quite intelligent for such a young child, and draws wild connections between impossibly unconnected information. She’s able to figure out all sorts of things that she probably shouldn’t be able to (like, who Boo Radley is etc.). She has instincts for understanding people and people-situations that serve to save her Dad loads of trouble.
Introverted Feeling (Fi): Scout is strong willed and independent. She dislikes wearing a dress, going to school and needing to behave like the other children. Scout as a profound need to stand up for what’s important to her…and in her mind, standing up for something often translates to violence. She genuinely wants to show love towards everyone, and that includes some of the stranger folk in the neighbourhood (Boo Radley, for example).
Extroverted Thinking (Te): She talks often to complete strangers and states the facts quite honestly. She can reach reasonable conclusions based on the connections that she makes, and listens avidly to her father as he reasons with her to view morality in certain ways. Younger, she has a hard time not allowing her emotions to overwhelm her, but in time, her reasoning becomes more balanced and she’s able to control her behaviour to a greater extent.
Introverted Sensing (Si): Scout is embarrassed enough by the prospect of walking home without her dress that she’s willing to wear a silly costume to cover up. She’s sentimental about the past, asks loads of questions about her mother and any object that has a connection to a person or time in the past. She has a good memory for detail.
Note: Scout is canonically accepted as an INFP. However, Scout is more extraverted than introverted. Plenty of people recognise this, but still accept her as an INFP simply because they “heard she was based off of Harper Lee.” Regardless of whether she exhibits the same Jungian functions as the author of the book, she shows them in a different hierarchal order.