You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Twitter Hires Its First Research Chief From Google Jeffrey Graham Previously Held Senior Research Positions at Initiative and Starcom MediaVest By Cotton Delo, Published on February 15, 2013 0 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.