What's More Activity 4. Direction: Identify the thesis statement in each of the following text. Write you answers on a separate sheet. 1. Psychologists have argued for decades about how a person's character is formed. Numerous psychologists believe that one's birth order (i.e. place in the family as the youngest, oldest, or middle child) has the greatest influence. I believe birth order can have a significant impact in the formation of a child's character based on my own experience growing up in a family of four children. Birth order can strongly affect one's relationship with parents, relationships with others, and how one views responsibility as an adult. Thesis Statement: