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1 | # Readability Formulas |
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3 | Flesch Reading Ease and Flesch–Kincaid Grade use sentence length and syllable counts. They do not establish whether a reader understands a game, an undefined term or a chain of reasoning. |
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5 | ```text |
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| 6 | Reading Ease = 206.835 − 1.015 × words/sentences − 84.6 × syllables/words |
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| 7 | Grade = 0.39 × words/sentences + 11.8 × syllables/words − 15.59 |
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8 | ``` |
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10 | A higher score is not a substitute for a reader explaining the proposed experience in ordinary language. Different text extraction and syllable-counting methods can also change results; compare like measurements and state uncertainty. |
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| 12 | ## Sources |
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14 | - [Flesch–Kincaid readability tests](https://en.wikipedia.org/wiki/Flesch%E2%80%93Kincaid_readability_tests): formula definitions. |
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| 15 | - [Bailin and Grafstein, The linguistic assumptions underlying readability formulae: a critique (2001)](https://www.sciencedirect.com/science/article/abs/pii/S0271530901000052) and [ERIC record](https://eric.ed.gov/?id=EJ629584): limitations of assessing reading difficulty through formulas. |
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17 | The former project-specific measurements and withdrawn comparisons are not retained as evidence for the restart. |
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