Purpose: Punctuation is traditionally seen to represent grammatical structures in writing, but some authors argue that it can also reflect the intonation and pauses of speech. In two experiments, we examined the influence of grammar and prosody on adults' judgments of comma placement. Method: University students rated the appropriateness of commas…

In English, some words sound the same but are distinguished by silent written markers of their morphological status, as in plurals (e.g., "cities"), singular possessives (e.g., "city's") and plural possessives (e.g., "cities'"). We examined undergraduates' ability to correctly omit or position apostrophes in these three word types before and after…