Several approaches exist to generate the data necessary to conduct impact assessments, each with their respective strengths and weaknesseses. Most common are Measurement, Modelling, or Expert Assessment, while Participatory Impact Assessments can be used to utilize stakeholder knwoledge and account for their value systems, .
For integrating and interpreting impactsacross multiple impact areas, Multi-Criteria-Analysis and Benchmarking are valuable tools.
