Web-IVR Debate Analytic Speaking Rubric

Six criteria are used for final human scoring: Reasoning, Evidence and Support, Rebuttal, Fluency, Language Accuracy and Vocabulary, and Pronunciation and Delivery. Each assessed criterion is scored from 1 (Limited) to 5 (Strong).

N/A = the criterion is not required by the task. NR = there is insufficient evidence to rate the criterion. Rebuttal is N/A for Unit 1 and Unit 5 opening turns. Automated browser feedback is formative and estimated; final Fluency and Pronunciation/Delivery ratings require a trained human rater listening to the original audio.

Performance Levels

Score	Level	General interpretation
5	Strong	Clear, developed, effective performance with only minor limitations.
4	Proficient	Successfully meets the task with good control, with some room for further development.
3	Developing	Main elements are present but development or control is uneven.
2	Emerging	Some relevant elements appear but remain limited, weak, or unclear.
1	Limited	The assessed ability is largely absent or seriously insufficient for the task.

1. Reasoning

Ability to present a defensible claim, give relevant reasons, and explain the logical relationship between the claim, reasons, and conclusion.

Score	Descriptor
5	Presents a clear and defensible claim with well-developed, logically sequenced reasoning. Explicitly explains how the reasons support the claim and demonstrates depth by considering relevant implications, conditions, or limitations.
4	Presents a clear claim supported by relevant and logically connected reasons. The relationship between the claim and reasons is adequately explained, although some aspects could be developed further.
3	Presents an identifiable claim and at least one relevant reason. Some explanation is provided, but the logical connection or development remains partial, general, or uneven.
2	Presents a vague, repetitive, or weakly supported claim. Connections between ideas are unclear or only implied, with limited development of reasoning.
1	Does not present a clear claim or relevant reason. Reasoning is largely irrelevant, contradictory, memorized, or insufficient to form a defensible argument.

2. Evidence and Support

Ability to use relevant examples, cases, observations, experience, facts, data, or other concrete support and explain how the support strengthens the argument.

Score	Descriptor
5	Provides specific, relevant, and convincing evidence or examples and clearly explains how the support strengthens the claim. Evidence is effectively integrated into the argument and demonstrates appropriate depth or variety.
4	Provides relevant and sufficiently specific evidence or examples. The connection between the support and claim is clear, with only minor limitations in detail or explanation.
3	Provides at least one relevant example or supporting point, but it remains general, insufficiently developed, or only partly connected to the claim.
2	Provides vague, weak, repetitive, or marginally relevant support. Examples may be mentioned but are inadequately explained or do not clearly strengthen the argument.
1	Provides no usable evidence or support, or the information presented is irrelevant, contradictory, or unable to support the claim.

3. Rebuttal

Ability to represent the opponent’s argument accurately, respond directly, identify a weakness or limitation, and provide a reasoned counterargument.

Score	Descriptor
5	Accurately represents the opponent’s claim, identifies a relevant weakness, assumption, or limitation, and responds with a direct, well-developed counterargument supported by reasoning or evidence. The rebuttal meaningfully advances the debate.
4	Responds directly and accurately to the opponent’s main point and provides a clear counter-position supported by relevant reasoning or evidence. The rebuttal is effective but could be developed further.
3	Identifies and responds to an opponent’s point, but the rebuttal is partial, general, or insufficiently supported. The response shows disagreement without fully challenging the reasoning behind the opposing claim.
2	Signals disagreement but responds superficially, primarily restates the speaker’s own position, or partially misrepresents the opponent’s argument. Little counter-reasoning is provided.
1	Does not meaningfully engage with the opponent’s argument, seriously misrepresents it, provides only unsupported disagreement, or responds irrelevantly.

4. Fluency

Ability to sustain connected speech at an appropriate pace with pauses, hesitation, repetition, fillers, and self-correction that do not unduly disrupt communication.

Score	Descriptor
5	Sustains speech smoothly at an appropriate pace. Pauses are primarily meaning-based, and occasional hesitation, repetition, filler use, or self-correction does not interrupt the flow or clarity of the response.
4	Speaks generally smoothly at an appropriate pace. Some hesitation, repetition, fillers, or self-correction occur, but the response remains connected and easy to follow.
3	Produces connected speech, but noticeable hesitation, repetition, fillers, uneven pacing, or self-correction sometimes interrupts the flow. The message remains generally understandable.
2	Speech is frequently interrupted by pauses, restarts, repetition, fillers, or unsuccessful self-correction. Uneven pacing and fragmented delivery make the response difficult to follow at times.
1	Is unable to sustain connected speech. Long pauses, isolated words or phrases, and repeated breakdowns seriously impede communication.

5. Language Accuracy and Vocabulary

Ability to use grammatical structures and vocabulary with sufficient range, precision, appropriacy, and control to express an argument.

Score	Descriptor
5	Uses a broad and precise range of vocabulary and grammatical structures flexibly and appropriately. Errors are rare and minor and do not affect meaning. Can paraphrase and express complex relationships effectively.
4	Uses an adequate range of vocabulary and grammatical structures with generally good control. Occasional grammatical or lexical errors occur but do not obscure the intended meaning.
3	Uses sufficient vocabulary and grammar to communicate the main argument. Some variety is evident, but expression may be repetitive or imprecise. Errors occur regularly, especially in more complex language, although meaning remains generally clear.
2	Uses limited and repetitive vocabulary and relies mainly on simple grammatical structures. Frequent errors in grammar or word choice sometimes obscure meaning or restrict argument development.
1	Uses very limited vocabulary and fragmented or largely inaccurate grammatical forms. Persistent errors seriously impede communication and prevent the argument from being adequately understood.

6. Pronunciation and Delivery

Ability to produce intelligible speech through pronunciation, stress, rhythm, chunking, intonation, volume, and vocal emphasis. Accent similarity to a native speaker is not a scoring target.

Score	Descriptor
5	Speech is consistently intelligible and requires little or no listener effort. Pronunciation, word stress, rhythm, chunking, intonation, volume, and vocal emphasis are effectively controlled to support meaning and argumentative contrast.
4	Speech is intelligible throughout. Pronunciation, stress, rhythm, chunking, intonation, and volume are generally controlled, with minor lapses that do not interfere with understanding.
3	Speech is generally intelligible, but some mispronunciations, inappropriate stress, uneven rhythm, weak chunking, intonation, or volume occasionally require listener effort.
2	Frequent problems with pronunciation, stress, rhythm, chunking, intonation, or volume reduce intelligibility and regularly require listener effort.
1	Speech is largely unintelligible, or pronunciation and vocal-delivery problems seriously prevent the intended message from being understood.

Overall Level

Use the mean of all criteria that are legitimately assessed. N/A and NR criteria are excluded from the mean.

Mean	Overall level
4.50–5.00	Strong
3.50–4.49	Proficient
2.50–3.49	Developing
1.50–2.49	Emerging
1.00–1.49	Limited