16. T F Concentrating on details is an excellent way to become a better listener. 17. T F It is impossible to listen too hard. 18. T F As your textbook explains, focusing on a speaker’s delivery and personal appearance is an excellent way to strengthen your listening skills. 19. T F Critical listening involves engaging in a mental argument with everything a speaker says. 20. T F When you listen to the campaign speech of a political candidate for the purpose of accepting or rejecting the speaker’s message, you are engaged in critical listening. Â