Chapter 11: Being Credible and Using Evidence

Public Speaking Process

• Purpose (Why)

• Source Credibility (You)

• Audience Analysis (Us)

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Public Speaking Process

• Topic Selection (This topic)

• Message Organization and Display (This manner)

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Source Credibility

• Audience perception of speaker’s effectiveness

• Earn right to speak on topic

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Four Aspects of Credibility

• Competence

• Trustworthiness

• Dynamism

• Common ground

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Information Sources

• Personal experience

• Library resources

• People resources

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Citing Sources of Information

• Bibliographic references

• Internal references

• Verbal citations

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Effective Research

• Source variety

• Evaluating sources– Clarity

– Verifiable

– Competent source

– Objective source

– Relevant

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Supporting Materials

• Examples

• Narratives

• Surveys

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Supporting Materials

• Testimonial evidence– Lay testimony

– Expert testimony

– Celebrity testimony

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Supporting Materials

• Numbers and statistics

• Analogies

• Explanations

• Definitions

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Ethical Considerations

• Source credibility

• Use of supporting material– Plagiarism

– Incremental plagiarism

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