Chapman was previously senior vice-president supporting TNS practices in the financial services, IT, telecoms and travel.
She first joined what was Ross-Cooper-Lund in 1998, after six years at TNS Demoscopia in Madrid. Ross-Cooper-Lund was then acquired by TNS and evolved into its advertising and brand performance division.
Chapman has also worked as the advertising and brand performance division's international research champion for North America.
Kimberly Till, president of TNS North America, said: "In her new role, Jeni will have an even greater opportunity to share her deep market research insights with our clients and provide exceptional leadership to the entire ABP team."
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