Complex sentence: In the 1980s, independently from Kočović, Vladimir Žerjavić in Zagreb used a similar method and obtained similar results and, intrestingly, both had lower figures for their own and ethnicity which was seen as a proof of their objectivity.
Split into simpler sentences: In the 1980s, independently from Kočović, Vladimir Žerjavić in Zagreb used a similar method and obtained similar results. Both had lower figures for their own and ethnicity which was seen as a proof of their objectivity.