1. Product Development Methedology
    1. Reusable Syringe Design Example
    2. Key Criteria: Ease of use, Accuracy
    3. Two-Stage Concept Selection Process: Screening and Scoring
    4. Decision Matrices for Objective Evaluation
  2. Six-Step Process
    1. Matrix Preparation
    2. Concept Rating
    3. Ranking
    4. Combination and Improvement
    5. Concept Selection
    6. Reflection on Results and Process
  3. Concept Screening
    1. Developed by Stuart Pugh in the 1980s
    2. Selection Matrix
    3. Quick Narrowing Down and Improvement of Concepts
    4. Reference Concept
    5. Rating: Better (+), Same (0), Worse (-)
    6. Ranking, Combination, and Improvement
    7. Selection for Further Analysis
  4. Results Interpretation
    1. Comparison of Concepts
    2. Estimation of Demand
    3. Five-Point Purchase-Intent Scale
    4. Gauge Customer Preferences
  5. Caution
    1. Discrepancies between Survey Intent and Actual Sales
    2. Comparing Concepts
    3. Real-world Validation
    4. Iterative Improvement
    5. Based on Scores
  6. Process Conclusion
    1. Reflection on Qualitative Insights
    2. Consideration of Market
    3. Product, and Customer Factors
  7. Concept Testing Details
    1. Various Formats
      1. Verbal Descriptions
      2. Sketches
      3. Photos
      4. Videos
      5. Prototypes
    2. Richness Depends on Format
    3. Surveys
      1. Five-Point Purchase-Intent Scale
    4. Results Interpretation
      1. Comparing Concepts
        1. Estimating Demand
  8. Concept Testing in Product Development
    1. emPower Corporation's Electric Scooter
    2. Seven-Step Method
      1. Define Purpose
      2. Select Survey Population
      3. Choose Survey Format
      4. Communicate Concept
      5. Measure Customer Response
      6. Interpret Results
      7. Reflect on the Process
  9. Concept Scoring
    1. Follows Concept Screening
    2. Weighted Scoring Matrix
    3. Fine-Scale Ratings
    4. Total Score Calculation
    5. Sensitivity Analysis
    6. Consideration of Customer Feedback
    7. Selection for Further Development, Prototyping, and Testing