German consultancy and market research company Goldmedia has expanded its team of consultants with the appointment of market and media researcher Dr Mathias Wierth as associate partner.

Wierth has previously been heading the media research activities of MTV Networks Germany and most recently Viacom International Media Networks for almost 10 years.

Based in Berlin, Wierth will strengthen the Goldmedia team with his expertise in the areas of TV and audience research, viewership measurement and brand guidance.