{"schema":"record/v1","id":"art_01M5P27SZC12DVRE458D96479X","type":"article","revision":1,"etag":"\"r1.s0\"","title":"What narration speaking rate (words per minute) does the evidence support for instructional voice-over, and how strong is it?","summary":"Problem. A narrator or TTS script needs a target words-per-minute figure. Conditions. Narrated instructional or lecture video for university students. Method. A 2026 scoping review (12 included studies out of 2679 identified) reports that cited researchers give about 150 wpm as usual speech, with comprehension spanning 150 to 270 wpm; one included experiment (Simonds et al.) found a moderate rate of 172 wpm gave higher perceived instructor credibility and nonverbal immediacy, with no significant difference in clarity or recall across rates. Use roughly 150-175 wpm as a starting script budget, then check by timing a read-through. Failure modes. Treating 172 wpm as a measured optimum (it was the moderate condition in one study); the 150-270 range is a literature claim relayed by the review, not its own measurement. Limitations. Review covers playback-speed and rate studies on university students 2017-2024, not audio description or entertainment narration; most papers did not report wo...","status":"active","body":{"text":"Problem. A narrator or TTS script needs a target words-per-minute figure. Conditions. Narrated instructional or lecture video for university students. Method. A 2026 scoping review (12 included studies out of 2679 identified) reports that cited researchers give about 150 wpm as usual speech, with comprehension spanning 150 to 270 wpm; one included experiment (Simonds et al.) found a moderate rate of 172 wpm gave higher perceived instructor credibility and nonverbal immediacy, with no significant difference in clarity or recall across rates. Use roughly 150-175 wpm as a starting script budget, then check by timing a read-through. Failure modes. Treating 172 wpm as a measured optimum (it was the moderate condition in one study); the 150-270 range is a literature claim relayed by the review, not its own measurement. Limitations. Review covers playback-speed and rate studies on university students 2017-2024, not audio description or entertainment narration; most papers did not report words per minute, which the review itself flags as a gap. Version/date. Codas, 30 Jan 2026.\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: Secondary review relaying primary studies; sample size reading of the table column is inferred; no audio description data; Table 1 does not give per-study wpm for most studies.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC12978316/fullTextXML","note":"Results; Discussion; Table 1, Simonds et al.; researcher reasoning"}]},"categories":["T10","T13"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC12978316/fullTextXML","claim":"Problem. A narrator or TTS script needs a target words-per-minute figure. Conditions. Narrated instructional or lecture video for university students. Method. A 2026 scoping review (12 included studies out of 2679 identified) reports that cited researchers give about 150 wpm as usual speech, with comprehension spanning 150 to 270 wpm; one included experiment (Simonds et al.) found a moderate rate of 172 wpm gave higher perceived instructor credibility and nonverbal immediacy, with no significant difference in clarity or recall across rates. Use roughly 150-175 wpm as a starting script budget, then check by timing a read-through. Failure modes. Treating 172 wpm as a measured optimum (it was the moderate condition in one study); the 150-270 range is a literature claim relayed by the review, not its own measurement. Limitations. Review covers playback-speed and rate studies on university students 2017-2024, not audio description or entertainment narration; most papers did not report words per minute, which the review itself flags as a gap. Version/date. 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A narrator or TTS script needs a target words-per-minute figure. Conditions. Narrated instructional or lecture video for university students. Method. A 2026 scoping review (12 included studies out of 2679 identified) reports that cited researchers give about 150 wpm as usual speech, with comprehension spanning 150 to 270 wpm; one included experiment (Simonds et al.) found a moderate rate of 172 wpm gave higher perceived instructor credibility and nonverbal immediacy, with no significant difference in clarity or recall across rates. Use roughly 150-175 wpm as a starting script budget, then check by timing a read-through. Failure modes. Treating 172 wpm as a measured optimum (it was the moderate condition in one study); the 150-270 range is a literature claim relayed by the review, not its own measurement. Limitations. Review covers playback-speed and rate studies on university students 2017-2024, not audio description or entertainment narration; most papers did not report words per minute, which the review itself flags as a gap. Version/date. Codas, 30 Jan 2026.\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: Secondary review relaying primary studies; sample size reading of the table column is inferred; no audio description data; Table 1 does not give per-study wpm for most studies.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC12978316/fullTextXML","note":"Results; Discussion; Table 1, Simonds et al.; researcher reasoning"}]},"tags":[],"type":"article","links":[],"title":"What narration speaking rate (words per minute) does the evidence support for instructional voice-over, and how strong is it?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Problem. A narrator or TTS script needs a target words-per-minute figure. Conditions. Narrated instructional or lecture video for university students. Method. A 2026 scoping review (12 included studies out of 2679 identified) reports that cited researchers give about 150 wpm as usual speech, with comprehension spanning 150 to 270 wpm; one included experiment (Simonds et al.) found a moderate rate of 172 wpm gave higher perceived instructor credibility and nonverbal immediacy, with no significant difference in clarity or recall across rates. Use roughly 150-175 wpm as a starting script budget, then check by timing a read-through. Failure modes. Treating 172 wpm as a measured optimum (it was the moderate condition in one study); the 150-270 range is a literature claim relayed by the review, not its own measurement. Limitations. Review covers playback-speed and rate studies on university students 2017-2024, not audio description or entertainment narration; most papers did not report wo...","evidence":{"claims":[{"url":"https://www.ebi.ac.uk/europepmc/webservices/rest/PMC12978316/fullTextXML","claim":"Problem. A narrator or TTS script needs a target words-per-minute figure. Conditions. Narrated instructional or lecture video for university students. Method. A 2026 scoping review (12 included studies out of 2679 identified) reports that cited researchers give about 150 wpm as usual speech, with comprehension spanning 150 to 270 wpm; one included experiment (Simonds et al.) found a moderate rate of 172 wpm gave higher perceived instructor credibility and nonverbal immediacy, with no significant difference in clarity or recall across rates. Use roughly 150-175 wpm as a starting script budget, then check by timing a read-through. Failure modes. Treating 172 wpm as a measured optimum (it was the moderate condition in one study); the 150-270 range is a literature claim relayed by the review, not its own measurement. Limitations. Review covers playback-speed and rate studies on university students 2017-2024, not audio description or entertainment narration; most papers did not report words per minute, which the review itself flags as a gap. Version/date. 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