Truncation and wildcards are boolean operators that enable you to search for various forms of a word or phrase. For instance, if you use the truncation symbol * after a word stem, you can search for all the words that start with that stem. For example, child* will return results such as child, children, and childhood. Wildcards are symbols that substitute one or more characters in a word. For example, if you use the wildcard symbol ? in a word, you can search for all the words that have different letters in that position. For example, wom?n will return results for woman and women. When using the CRAAP test for truncation and wildcards, you should apply the same criteria as for any other source but pay extra attention to currency, relevance, authority, accuracy, and purpose. To ensure currency, check the publication date and references of the source. To ensure relevance, check the title, abstract, and keywords of the source. To ensure authority, check the author's name, affiliation, and contact information. To ensure accuracy, check the facts, figures, and data in the source. To ensure purposefulness, check the tone, language, and style of the source.