“While research shows bias around sexuality and race has declined precipitously over the last 12 years, the one area where unconscious bias has barely shifted is ageism,” Sheila Callaham wrote in Forbes in 2019, citing a 2015 EEOC study that found only 8 percent of companies with diversity and inclusion strategies included age.”
Lawrence R. Samuel Ph.D.
Data suggests there is no reason to believe it will. Source: Will Ageism End Soon?