This study compared speech intelligibility for sentences spoken either conversationally or in a clear manner under three conditions: auditory only, visual only, and audiovisually. Overall, in each condition, speech intelligibility improved significantly for the tokens of clear speech. Some interaction between speaker and manner of speech was…

Recent literature on individual differences in verbal ability indicates that people demonstrating high verbal comprehension are quicker and more accurate in identifying lexical items, as well as more rapid in parsing sentences. They are not, however, more sensitive to the general gist of a passage, and thus do not respond to priming from context…