Method and rigour
Check command of non-market valuation methods: contingent valuation, choice experiments, hedonic pricing, benefit transfer, plus InVEST or ARIES modelling, discount rate selection and SEEA-EA accounting structures.
Evidence to listen for
- Follows and can justify an established methodology
- Understands contamination, bias, and chain of custody as they apply to the field
- Knows the limits of their techniques and says so
- Documents procedure so results are reproducible and defensible
Five-point scoring guide
Careless method; unaware of contamination, bias, or procedural integrity.
Knows procedures but applies them inconsistently; gaps in documentation.
Sound standard practice; less certain outside familiar techniques.
Rigorous and well documented; understands the limits of each method.
Names methods chosen for specific service types, defends discount rates and benefit transfer adjustments, and cites TEEB or SEEA-EA conventions accurately.