This book constitutes the refereed proceedings of the 15th International Working Conference on
Requirements Engineering: Foundation for Software Quality REFSQ 2009 held in Amsterdam The
Netherlands in June 2009. The 14 revised full papers were carefully reviewed and selected from
49 submissions. The papers are organized in thematic sections on value and risk change and
evolution interactions and inconsistencies organization and structuring experience
elicitation research methods behavior modeling empirical studies and open-source RE.
