Use only if abbreviation is conventional, is apt to be familiar, will save considerable space, and will prevent cumbersome repetition. Avoid beginning a sentence with an acronym or an abbreviation. For further information, see pages 111-114 in the Publication Manual. APA rules for capitalization state: Capitalize all words of four letters or more in titles of books and articles in text. Do not capitalize names of laws, theories, and hypotheses except for decent nouns. For more information, see pages 101-104 in the Publication Manual. Hyphenation APA rules for hyphenation state: For compound words not in the dictionary, use hyphens for clarity rather than omit them. Hyphenate compound adjectives that precede the noun they modify: role-playing mechanism two-way analysis middle-class families[…]