Final answer:
American judges and justices possess impartiality, legal expertise, and an understanding of the Constitution. Their backgrounds and personal characteristics can influence their judicial behavior.
Step-by-step explanation:
American judges and justices typically possess certain characteristics that influence their judicial behavior. These characteristics include impartiality, legal expertise, legal reasoning, and an understanding of the Constitution. Judges' backgrounds and personal characteristics can affect their judicial behavior in various ways. For example, judges from different backgrounds may have different experiences and perspectives that shape their interpretation of the law and their decision-making. Additionally, judges' personal beliefs and political attitudes can influence their judgments, although they are expected to leave their political ideology outside the courtroom.