A debate has developed in the recent theoretical and experimental linguistic literature on the status and the locus of conjunct agreement in South Slavic (Marušič et al. 2007, Bošković 2009, Franks & Willer Gold 2014, Puškar & Murphy 2015; Marušič et al. 2015 and Willer-Gold et al. 2016). One of the pertinent issues of the debate is the status of Highest Conjunct Agreement – agreement with the hierarchically highest conjunct – in sentences with a preverbal subject. The question around which the debate revolves is a basic one: Is there Highest Conjunct Agreement in Bosnian/Croatian/Serbian, and how is it blocked, or derived, respectively?