We recommend down-style typing (capitalize only the first word and any proper nouns) for your headlines, subheads, and text. Down style is more legible because as we read we primarily scan the tops of words (fig 8.12a). Notice how much harder it is to read the bottom half of the same sentence (fig. 8.12b). If you use initial capital letters in your headlines, you disrupt the reader’s scanning of the word forms (fig. 8.12c).