"Because they don't bother you," Jem answered in the darkness. He had turned out his reading light.

"Reckon you're at the stage now where you don't kill flies and mosquitoes now, I reckon," I said. "Lemme know when you change your mind. Tell you one thing, though, I ain't gonna sit around and not scratch a redbug."

"Aw dry up," he answered drowsily.

Jem was the one who was getting more like a girl every day, not I. 

This shows how Scout and her brother share a close relationship. Through this interaction the readers see how Scout is similar to a tom boy figure.

"Because you're children and you can understand it," he said, "and because I heard that one-"

He jerked his head at Dill: "Things haven't caught up with that one's instinct yet. Let him get a little older and he won't get sick and cry. Maybe things'll strike him as being—not quite right, say, but he won't cry, not when he gets a few years on him."

This shows how mature Scout is for her age. She is able to realize so much at her young age.

"No," he said. "You've had enough scaring for a while. This is too-"

"Atticus, I wasn't scared."

He raised his eyebrows, and I protested: "Leastways not till I started telling Mr. Tate about it. Jem wasn't scared. Asked him and he said he wasn't. Besides, nothin's real scary except in books."

Scout's reaction towards her attacking shows how brave she is. Although she was almost killed, her fearless let her see past that and move on.

"Afraid, why?" asked Jem.

"Well, what if—say, Mr. Link Deas had to decide the amount of damages to award, say, Miss Maudie, when Miss Rachel ran over her with a car. Link wouldn't like the thought of losing either lady's business at his store, would he? So he tells Judge Taylor that he can't serve on the jury because he doesn't have anybody to keep store for him while he's gone. […]

"Serving on a jury forces a man to make up his mind and declare himself about something. Men don't like to do that. Sometimes it's unpleasant.

In Atticus and Jem's interaction, the readers are able to recognize how understanding Attticus is.