  Defect models capture faults and methods to provoke failures. To integrate
such defect models into existing quality assurance processes, we developed a
defect model lifecycle framework, in which the elicitation and classification
of context-specific defects forms a crucial step. Although we could gather
first insights from its practical application, we still have little knowledge
about its benefits and limitations. We aim at qualitatively analyzing the
context-specific elicitation and classification of defects to explore the
suitability of our approach for practical application. We apply case study
research in multiple contexts and analyze (1) what kind of defects we can
elicit and the degree to which the defects matter to a context only, (2) the
extent to which it leads to results useful enough for describing and
operationalizing defect models, and (3) if there is a perceived additional
immediate benefit from a practitioner's perspective. Our results strengthen our
confidence on the suitability of our approach to elicit defects that are
context-specific as well as context-independent. We conclude so far that our
approach is suitable to provide a blueprint on how to elicit and classify
defects for specific contexts to be used for the improvement of quality
assurance techniques.
