In To Kill A Mockingbird, Jem and Scout show different signs of maturity within their family lives and with the trial of Tom Robinson.
Scout has been a repulsive little child that always wanted her way of life even though she is oblivious to the actual world. In her early years, she engages into a one-sided fist fight with a reason that he caused her punishment for being who he is... a Cunningham. Scout's explosive behavior has caused her to be very odd as a girl becoming a woman. Scout's respect towards her maid Calpurnia is not very high because of the fact that she is strict. In real terms, Calpurnia is trying to mature Scout from her mischievous ways even if it is harsh. Scout soon comes to realize that there are many hardships outside her perfect home and family and that she needed to be in other peoples shoes to understand and not act without knowledge.
Jem changes in personality, traits, and physical appearance. In the beginning of the novel, Jem is playful little boy who loved to make his sister jealous that he went to school and he got to sleep at later bedtimes. He was scared of a silly rumor of the Radleys and was not very strong in stature. During the Robinson trial, Jem becomes aware of the cruelty of his community and mans up to himself to be more calm and responsible towards his family. Jem loses all fear for Boo Radley as he wears Boo's shoes and understood how hard life for him was. Jem also realizes the goodness in other peoples hearts as he reads to Mrs. Dubose. Although he sees evil and rudeness on the inside, when she dies, he is filled with regret and actual sadness following with his growing maturity.
Both Jem and Scout grow up to be the model kids that Atticus wanted them to be, respectful and responsible. Each person finds their own path to maturity. Whether it be a life changing experience to just a realization, can change a whole person's mindset to becoming a mature person when they are older.