concept of right or wrong, or good or bad. For example, one may have the value that
each individual should enjoy privacy. Knowledge of the nature of attitudes, beliefs, and
values is important because they vary in their permanence. Attitudes change fairly easily,
beliefs less so, and values are enduring and not likely to change. A speaker should take
this into account when planning his or her proposition. If he or she wishes to affect or
change the values of the audience, for instance, then only a modest change would be
realistic. Likewise, if the speaker can surmise the values of the audience, he or she
might be able to link the proposition to their values.
Learning Objective: LO 15.2 Explain how to select and narrow a persuasive topic,
identify a persuasive purpose, and develop and support a persuasive proposition.
Topic: Developing Your Audience-Centered Persuasive Speech
Difficulty Level: Moderate
Skill Level: Apply What You Know
TB_Q15.67 Differentiate between the three types of propositions (fact, value,
policy).
Answer: A proposition of fact deals with claims as to whether something is true or false,
known or unknown. A proposition of value calls for a judgment of worth or value. A
proposition of policy advocates a specific action or change of policy, procedure, or
behavior.
Learning Objective: LO 15.2 Explain how to select and narrow a persuasive topic,
identify a persuasive purpose, and develop and support a persuasive proposition.
Topic: Developing Your Audience-Centered Persuasive Speech
Difficulty Level: Moderate
Skill Level: Understand the Concepts
TB_Q15.68 Briefly explain the various stages of credibility as it applies to a
speaker.
Answer: Credibility can be established before, during, and after a speech. Initial
credibility is the impression your listeners have of the speaker before he or she even
begins to speak. This level of credibility might be determined by appearance and
credentials. Derived credibility stems from the perception the audience has as the
speaker delivers the speech. Things like common ground and the organization of the
speech can affect derived credibility. Finally, terminal credibility is the perception
listeners have after the speaker is finished with the speech. By having a strong
conclusion and maintaining eye contact after the closing sentence, a speaker can
strengthen his or her terminal credibility.
Learning Objective: LO 15.3 Use credibility, logical reasoning, and emotional appeals to
make your persuasive speech more effective.
Topic: Supporting Your Persuasive Message with Credibility, Logic, and Emotion
Difficulty Level: Moderate
Skill Level: Understand the Concepts
TB_Q15.69 What is reasoning by analogy, and what should the speaker consider
when using an argument from analogy?
Answer: Reasoning by analogy is one in which the speaker demonstrates how an
unfamiliar thing, idea, or situation is similar to something the audience already
understands by drawing a conclusion between two things or situations. These things
must share some essential common feature for the reasoning by analogy to be sound.