How does Jem use stereotypes about gender to influence Scout?

When Jem was displeased with Scout or when he tried to get her to do something she did not wish to do, he often used gender stereotypes as an insult.  Scout did not act or dress like a typical girl of the 1930s.  In the 1930s, girls were usually stereotyped as being sweet, polite, and pretty.  Scout preferred overalls to dresses and playing outside to dolls.

Jem sometimes criticized Scout by using gender stereotypes as an insult.  When Scout expressed that she wanted to stop playing the Boo Radley game, Jem told her that she "was being a girl, that girls always imagined things, that's why other people hated them so" (To Kill a Mockingbird, Chapter 4).  Jem's stereotyped idea of girls was that they let their imaginations run wild.  He turned Scout's concerns about playing the game into an insult about her gender.  He also tried to persuade her to continue playing the game by saying she was acting like a girl.