Step 5: Effect weighting

Now that the effect-scores have been normalised, the next step is to allocate weighting points so that the municipality’s priority issues are reflected in the results.

1. Allocating weighting points

Effect weighting involves the allocation of weighting points to the effect categories to reflect priority issues in a municipality (e.g. a grave need to reduce local air pollution).

 In a simple weighting process, a total of 100 weighting points can be assigned to the effect categories in a hierarchical process; i.e. the points are first distributed amongst the higher effect categories (e.g. ‘environmental effects’), then distributed among the lower-level effects within the same category. The effect tree (see Unit 4, Step 2: Identify effects and indicators) can be used as starting point.