Comprehensive Study Guide: Rhetorical Invention, the Rhetorical Triangle, Appeals, and Modes of Discourse

Topics of Rhetorical Invention (Topoi and Loci Communes)

  • Definitions and Conceptual Foundations:

    • Topics of Invention: Within rhetorical invention, topics—also referred to as topoi, loci communes, or commonplaces—are basic categories of relationships among ideas.

    • Function: They serve as templates or heuristics for discovering arguments, evidence, and things to say about any given subject.

    • Literal Meaning: The phrase "topics of invention" literally translates to "places to find things."

  • Aristotelian Categorization of Topics:

    • Aristotle established a fundamental division between two classes of topics:

      • Common Topics: General categories of relationships among ideas applicable across broad, non-specific subjects.

      • Special Topics: Specific categories relevant to each of the three specialized branches of classical oratory.

  • Catalog of Common Topics:

    • Definition:

      • Genus / Species

      • Division

      • Whole / Parts

      • Subject / Adjuncts

    • Comparison:

      • Similarity / Difference

      • Degree

    • Relationship:

      • Cause / Effect

      • Antecedent / Consequence

      • Contraries

      • Contradictions

    • Circumstances:

      • Possible / Impossible

      • Past Fact / Future Fact

    • Testimony:

      • Authorities

      • Witnesses

      • Maxims or Proverbs

      • Rumors

      • Oaths

      • Documents

      • Law

      • Precedent

      • The supernatural

    • Notation and Conjugates

  • Catalog of Special Topics Across Branches of Oratory:

    • Judicial Oratory:

      • Justice (right)

      • Injustice (wrong)

    • Deliberative Oratory:

      • The good

      • The unworthy

      • The advantageous

      • The disadvantageous

    • Ceremonial Oratory:

      • Virtue (the noble)

      • Vice (the base)

The Rhetorical Situation and the Rhetorical Triangle

  • The Rhetorical Situation:

    • Definition: A rhetorical situation occurs when a speaker, an audience, and a topic converge within a given context to produce a rhetorical act (such as a formal speech or a written text).

    • Constituent Contextual Elements:

      • Speaker / Writer: The communicator producing the message (linked to Ethos).

      • Audience / Reader: The recipient(s) experiencing the communication (linked to Pathos).

      • Topic / Issue & Message / Thesis: The core subject and evidence presented (linked to Logos).

      • Context: The broader situation framing the communicative exchange.

      • Purpose: The primary goal or intended outcome of the communication.

      • Kairos / Exigence: The prompt, reason, or underlying need driving the response.

  • The Rhetorical Triangle (Aristotelian Triangle):

    • Definition: A visual analytical model utilized to deconstruct and analyze any act of communication.

    • Historical Origin: First conceptualized by the ancient Greek philosopher Aristotle (384 – 322 BC384\,\text{--}\,322\,\text{BC}), who described the fundamental interaction occurring among topic, speaker, and audience.

    • The Three Vertices:

      • Speaker/Writer

      • Audience/Reader

      • Topic/Issue

Rhetorical Appeals

  • Overview of Rhetorical Appeals:

    • Definition: Rhetorical appeals are strategies through which a writer or speaker utilizes language and evidence to achieve a intended effect on, or reaction from, an audience.

    • The primary vertices of the rhetorical triangle connect directly to the three main rhetorical appeals (Ethos, Pathos, Logos), along with the temporal appeal of Kairos.

  • Ethos:

    • Etymology: Greek term for "ethics."

    • Definition: Represents the credibility, authority, and character of the speaker or writer making the communication.

    • Establishing Factors: Ethos is built through status, awareness, professionalism, celebrity endorsement, research, and objective presentation.

    • Primary Function: Establishes trust so the audience believes what is being communicated.

    • Guiding Analytical Questions: How does the speaker/writer assure the audience of their credibility? How do they show that they are trustworthy, honest, fair, well-informed, and objective?

  • Logos:

    • Etymology: Greek term for "logic."

    • Definition: Represents the facts, research, evidence, and logical reasoning underlying the thesis or message.

    • Primary Function: Convinces the audience that the message is well-researched, well-structured, rational, and worth their time.

    • Guiding Analytical Questions: Does the writer provide sufficient credible and relevant information? Do they utilize logical, reasoned arguments to arrive at sound conclusions?

  • Pathos:

    • Etymology: Greek term for "emotion."

    • Definition: Represents the emotional experience of the audience and how they feel when receiving a message.

    • Emotional Spectrum: Appeals to emotions such as excitement, sadness, anger, motivation, jealousy, or any other feeling that moves an audience.

    • Primary Function: Persuades the audience to act or change their perspective based on emotional resonance.

    • Guiding Analytical Questions: How is the writer attempting to make the reader care or form an emotional connection to the topic?

  • Kairos (Exigence):

    • Definition: Refers to exigence—the underlying trigger, necessity, or prompt that causes an author to write or speak in the first place.

    • Core Concept: Represents a person's need or reason to respond to a situation, problem, statement, action, or event.

    • Analytical Nuance: Kairos is sometimes omitted from entry-level discussions of rhetorical appeals because it is more abstract and challenging to explain.

Rhetorical Analysis and Modes of Discourse

  • Rhetorical Analysis:

    • Definition: A systematic analytical process or piece of writing that evaluates how a speaker or writer uses specific rhetorical techniques within a given speech or text.

  • Rhetorical Approaches and Strategies:

    • Definition: Systematic ways of organizing communication.

    • Synonymous Terms: Also known as rhetorical patterns, patterns of development, or modes of discourse.

    • Operational Rules:

      • Within any presentation or written text, multiple strategies typically work in combination.

      • These approaches feature predictable organizational patterns and key signal words.

  • Comprehensive Taxonomy of Modes of Discourse:

    • Narration (Narrating):

      • Meaning: Telling a story.

      • Structural Order: Usually organized in chronological order.

    • Description (Describing):

      • Meaning: Presenting a sensory image of a person, place, object, feeling, or experience to a reader.

      • Structural Order: Utilizes sensory details and is frequently organized in spatial order.

    • Illustration (Illustrating):

      • Meaning: Presenting a general statement and providing support using one or more specific examples.

    • Comparison (Comparing / Contrasting):

      • Meaning: Analyzing and explaining how two or more things, individuals, or ideas are similar or different.

      • Structural Patterns: Employs subject-by-subject structure, point-by-point structure, or both. Covers similarities, differences, or both.

      • Analogy Sub-type: An extended metaphor that compares a less familiar subject to a more familiar subject containing similar elements, making the unfamiliar subject easier to understand.

    • Process Analysis (Analyzing a Process):

      • Meaning: Explaining how to do something or explaining how an event occurred, occurs, or will occur.

      • Sub-types:

        • Directive: Explains how to perform a task.

        • Informative: Explains how something happened, happens, or will happen.

      • Structural Order: Usually organized in sequential order.

    • Definition (Defining):

      • Meaning: Explaining the extended meaning of a word or concept.

      • Methods: Etymology, examples, negation, analogy, denotation, connotation, or a combination of these techniques.

    • Classification (Classifying):

      • Meaning: Categorizing or grouping objects, people, places, and ideas based on explicit criteria.

    • Cause and Effect Analysis:

      • Meaning: Examining and explaining the causes (why an event, action, situation, or problem occurred, occurs, or will occur) and/or its effects (consequences).

      • Common Formats: Cost/benefit analysis and problem-solution analysis usually operate through cause and effect analysis.