Verbal Aspect in Old Church Slavonic Jaap Kamphuis demonstrates that the aspect system of Old Church Slavonic can best be described if one divides the verbs into three main categories: perfective, imperfective and anaspectual. This differs from the traditional division into perfective and imperfective verbs only. To support the categorization, the study contains a corpus-based quantitative and qualitative analysis of the available Old Church Slavonic data. This analysis contributes to a better understanding of the development of aspect in Slavic. Kamphuis shows that aspect in Old Church Slavonic functions more like verbal aspect in the Western groups of Slavic languages (e.g. Czech) than like that in the Eastern group (e.g. Russian).