Word Recognition
●ValidatedPlatform: HTML · German · · verified 79d ago
Description
Pixi.js + TypeScript educational game built for the LEAPS Zurich learning-progress study. The child hears a spoken target (a real German word like "Rad" or a pronounceable pseudo-word) and is shown four candidate spellings; they tap the one that matches the audio. The task is split into two parallel arms — real German words and pseudo-words — each with its own demo, practice and test scenes. Real-word items probe sight-word recognition; pseudo-word items probe phonological decoding by removing the option to retrieve a known lexical entry. The flow is Demo → Practice (real) → Test (real, 31 items) → Practice (pseudo) → Test (pseudo, 31 items). The test scenes cap at 7 minutes each and show a 'stop frog' early-exit overlay after 30 seconds of inactivity. Each trial logs the four candidate spellings, every press/release event, every audio replay, the final selection, and per-trial timestamps.
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Task Outputs
Audio-to-orthography mapping in early readers, separating sight-word recognition (real-word block) from phonological decoding (pseudo-word block).
sceneword_type- Real-word test accuracy (% correct on the 31 test items)
- Pseudo-word test accuracy (% correct on the 31 testPseudo items)
- Real - pseudo accuracy gap (lexicality benefit)
- Mean response time per trial, separately for real vs pseudo
- Audio replays per trial (proxy for decoding effort)
- Selection-revision count (selections.length per trial)
- Stop-frog rate (proportion of sessions terminated early)
| Variable | Role | Type | Description | Unit |
|---|---|---|---|---|
practice | dependent | object | SceneResult for the real-word practice phase, or a StopFrogResult if exited early. Null if skipped. | - |
teststar | dependent | object | SceneResult for the real-word test phase, or a StopFrogResult if exited early. Null if skipped. | - |
practicePseudo | dependent | object | SceneResult for the pseudo-word practice phase. Same shape as `practice`. | - |
testPseudostar | dependent | object | SceneResult for the pseudo-word test phase. Same shape as `test`. | - |
answers | dependent | array | Inside each SceneResult: an AnswerResult per trial. | - |
totalCorrect | dependent | number | Inside each SceneResult: count of correct answers in that scene. | - |
totalTime | metadata | number | Inside each SceneResult: total time spent in the scene. | ms |
reference | independent | string | AnswerResult field: filename of the spoken target audio (e.g. wr_rad.mp3 for the word 'Rad'). | - |
trialIndex | metadata | number | AnswerResult field: 0-based trial index within the scene. | - |
startTimestamp | metadata | number | AnswerResult field: timestamp when the trial started. | ms |
endTimestamp | metadata | number | AnswerResult field: timestamp when the green-arrow submit was clicked. | ms |
answerOptions | independent | array | AnswerResult field: the four candidate written words, each with isTarget (true for the correct option) and choiceIndex (1=top-left, 2=top-right, 3=bottom-left, 4=bottom-right). | - |
audioPlaybacks | metadata | array | AnswerResult field: every time the spoken target was played, with timestamp and audioFile. Children can replay; the count is informative. | - |
selections | dependent | array | AnswerResult field: every click on an option, with timestamp, choiceIndex, and isFinal (true for the one submitted). | - |
isCorrectstar | dependent | boolean | AnswerResult field: whether the final selection matched the spoken target. | - |
responseTimestar | dependent | number | AnswerResult field: time from trial start to final-submit click. | ms |
Provenance
Source: nccr-seed
Fetched: 2025-09-15
Last verified: 2026-04-29 — passed