Annex 2: Strengths and Weaknesses of Qualitative Evaluation Designs

Strengths

Weaknesses

  • Flexibility to evolve. 
  • Sampling focuses on high value subjects.
  • Holistic focus (looking at the “big picture”).
  • Multiple sources provide understanding of complex situations and behavior.
  • Narrative reports more accessible than statistical tables to many non-statisticians.
  • Triangulation strengthens validity of findings.
  • Lack of clear evaluation design may frustrate clients.
  • Lack of generalizability.
  • Presenting multiple perspectives makes it difficult to reach consensus and provide a neat executive summary (“bottom line”).
  • Individual factors not isolated.
  • Interpretivist methods appear too subjective.
  • Lack of clear documentation of methods makes it difficult for client/reader to assess validity.