Four-year-old Marquis pays very careful attention to his father. He imitates many of his father's actions, copies his behaviors, and responds appropriately to rewards and punishments for his own behaviors. Marquis is learning many aspects of gender through the theor

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.