The coefficient of the Readability is negative and statistically significant for digital cameras suggesting that reviews that have higher Readability scores are associated with higher sales.
This is likely to happen if such reviews are written in more authoritative and sophisticated language which enhances the credibility and informativeness of such reviews. Our results are robust to the use of other Readability metrics described in Table 1 such as ARI, Coleman–Liau index, Flesch–Reading Ease, Flesch–Kincaid Grade Level and the SMOG index.