I will argue in this paper that the standard notions of a f f e c t e d n e s s , change-of-state and result state are too coarse-grained, and will revise and enrich substantially their content, increasing their role in a compositional aspect construal procedure. I will claim in particular that a proper theory of event structure requires that enriched result states should be lexically represented, and will base on them a computational treatment of event structure within a feature-structure-based lexicon. .