YouGov BrandIndex first screened all of its 380 brands for positive Buzz, which asks respondents "Have you heard anything positive about the brand in the last two weeks, through advertising, news, or word of mouth?" Brands with low response volume were eliminated. From those brands, they were then ranked on Word of Mouth scores, which asks respondents "Which of the following brands have you talked about with friends and family in the past two weeks (whether in person, online, or through social media)?" All respondents for this research were adults 18 through 34 years old. Data was collected between September 1, 2016 and August 31, 2018.