Millennials Age" editorial coined the phrase "Generation Y" to describe those who were aged 11 or younger as well as the teenagers of the upcoming ten years who were defined as different from Generation X. According to journalist Bruce Horovitz, in 2012, "Ad Age" "threw in the towel by conceding that millennials is a better name than Gen Y", and by 2014, a past director of data strategy at "Ad Age" said to NPR "the Generation Y label was a placeholder until we found out more about them". Millennials are sometimes called "Echo Boomers", due to their being the offspring of
Generation X this demographic cohort saying, "Over 30 years after their birthday, they didn't have a name. I think that's germane." Previously, the cohort had been referred to as Post-Boomers, Baby Busters, New Lost Generation, latchkey kids, MTV Generation, and the 13th Generation (the 13th generation since American independence). Generation X is the demographic cohort following the post–World War II baby boom, representing a generational change from the baby boomers, but there is debate over this because the end-date of the baby-boomer generation is disputed. Research from MetLife, examining the boomers, split their cohort into "older boomers", which they defined as born