Can someone here define what "EQ" is since the author broke the rule of defining the acronym during the first instance that it is encountered? The entire conte

Can someone here define what "EQ" is since the author broke the rule of defining the acronym during the first instance that it is encountered? The entire context of the article is lost without this definition and makes no sense. https://www.mcc.gov/resources/story/section-writing-guide-good-grammar/ https://www.mcc.gov/resources/story/section-writing-guide-go...