{
  "schema": "vedokrok.public-item.v1",
  "release_id": "MHC-RPUB-20260920-75ad787a",
  "url": "/knowledge/use-short-audiovisual-loops-for-difficult-connected-speech",
  "id": "MHC-D-RESEARCH-1138",
  "version": "0.1.0",
  "title": "Use short audiovisual loops for difficult connected speech",
  "summary": "A two-hour film is input; a ten-second loop can be a microscope.",
  "kind": "protocol",
  "body": "Keep extensive viewing for exposure, but isolate a very short difficult segment for analysis. Listen without text, inspect the caption or transcript, mark reductions, word boundaries or stress, then replay without text. If useful, imitate the segment once or twice and return to the full scene. The goal is to repair one perceptual problem without converting the whole video into intensive study.",
  "limits": [
    "Do not loop every difficult line. The method is for high-value recurrent perceptual problems."
  ],
  "topics": [
    "union-language-listening-speaking-and-pronunciation"
  ],
  "intents": [],
  "source_ids": [
    "RS-2FA04C32D2086684",
    "RS-F095BF951C775AAE"
  ],
  "evidence": [
    {
      "claim": "A 2026 meta-analysis found positive pre-post learning from audiovisual input without captions across vocabulary, grammar, pronunciation, speaking and listening outcomes, with video category moderating effects.",
      "source_id": "RS-2FA04C32D2086684",
      "role": "supports",
      "note": "The synthesis uses within-group pre-post effects rather than a single competing control, so it does not establish superiority over all alternative practice.",
      "locator": "Abstract"
    },
    {
      "claim": "Same-language captions improve incidental vocabulary learning on average, but the average caption advantage is smaller among high-intermediate and advanced learners.",
      "source_id": "RS-F095BF951C775AAE",
      "role": "supports",
      "note": "Caption benefits for vocabulary do not prove improved caption-free listening.",
      "locator": "Abstract and proficiency moderator"
    }
  ],
  "use_when": [
    "Authentic video is broadly understandable but short stretches of natural connected speech keep disappearing."
  ],
  "avoid_when": [
    "Do not loop every difficult line. The method is for high-value recurrent perceptual problems."
  ],
  "example": "A fast ten-second exchange becomes the intensive drill; the rest of the episode remains normal viewing.",
  "check": "The segment is intelligible without text and the session still contains substantial meaning-focused input.",
  "steps": [
    "Choose one short missed segment.",
    "Listen without text.",
    "Inspect the exact wording.",
    "Notice the acoustic cue that was missed.",
    "Replay without text.",
    "Return to meaning-focused viewing."
  ],
  "sources": [
    {
      "id": "RS-2FA04C32D2086684",
      "title": "The effects of audiovisual input on second language learning: A meta-analysis",
      "url": "https://www.cambridge.org/core/journals/studies-in-second-language-acquisition/article/effects-of-audiovisual-input-on-second-language-learning-a-metaanalysis/9B61BAEF14F110F01148E398D171634A"
    },
    {
      "id": "RS-F095BF951C775AAE",
      "title": "Incidental Vocabulary Acquisition Through Captioned Viewing: A Meta-Analysis",
      "url": "https://onlinelibrary.wiley.com/doi/full/10.1111/lang.12697"
    }
  ],
  "relations": [
    {
      "from": "MHC-D-RESEARCH-1138",
      "to": "MHC-D-RESEARCH-1133",
      "type": "useful_with",
      "url": "/knowledge/listen-once-before-opening-the-transcript"
    }
  ],
  "collections": [
    {
      "id": "RC-53EDD1B028480924",
      "title": "Train listening, speaking and pronunciation for transfer",
      "url": "/collections/train-listening-speaking-and-pronunciation-for-transfer"
    }
  ]
}