Effect characterization in social impact assessment: a scan of current practice

Good-practice guidance for impact assessment (IA) consistently recommends that IA practitioners characterize impacts using parameters such as magnitude, likelihood and geographic extent. In practice, however, this guidance is not always followed. In order to identify the extent to which impacts are characterized for social topics, this paper reviewed of the social assessment sections of 57 environmental impact assessment (EIA) reports from 12 countries. The review found that 61% attempted to characterize impacts for social topics, while 39% did not. Of the 61% that characterized impacts, just over half (54%) provided transparent definitions for effect levels (e.g. low, medium and high). The research results shine a light on the lack of consistency in thoroughly, appropriately and transparently characterizing social effects. Advancing this discussion amongst SIA professionals is important, as it will benefit the quality of SIAs and mitigation approaches in the future. Finally, this paper puts forward a proposed model for social effect characterization parameters that can be used and adapted for future assessments.

Abbreviation: EIA: environmental impact assessment; IA: impact assessment; SIA: socio-economic impact assessment.