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Direct Observation
Developmental Evaluation
An evaluator works alongside a product team to collect and analyze data in real time, enabling rapid testing of ideas, tracking of developments, and continuous feedback to adapt innovations in complex or uncertain settings. The process involves external stakeholders and real-world interactions to surface emerging patterns and guide adjustments.
When This Method Fits
Typical duration
Months – Long Term
Typical cost
Medium – High
Fidelity level
Live Limited, Live Full
Stage
Feasibility, Validation
Hypothesis type
Execution
Goal type
Deepen product-market fit, Drive corporate innovation / R&D, Improve operational efficiency, Maximize societal impact
Randomization
N/A
Study design
Longitudinal panel design
Minimum units needed
1
1Best Fit When
Best when an initiative is operating in genuinely uncertain, fast-changing conditions where the plan itself needs to keep evolving, and you want an embedded, real-time read on that evolution.