This book constitutes the thoroughly refereed post-proceedings of the 8th International Workshop on the Design, Specification, and Verification of Interactive Systems, DSV-IS 2001, held in Glasgow, Scotland, UK, in June 2001. The 12 revised full papers presented have gone through two rounds of reviewing, selection, and revision. The book offers topical sections on mobile interface design, context-sensitive interfaces, supervision and control systems, temporal and stochastic issues, and new perspectives.