A3.1 There are a number of approaches to the appraisal of costs and benefits that are difficult to value in money terms. These include, for example, listing and describing them, developing a matrix or impact statement, and applying the weighted scoring method. As indicated in section 2.7 above, these various approaches should be considered carefully before choosing the method most suited to the case in hand. Listing and describing is often adequate in simple cases. The impact statement approach is adaptable to some circumstances. The weighted scoring method, explained in this appendix, is a another alternative approach.
A3.2 The weighted scoring method approach is the preferred methodology for SGHD. Before explaining the method it should be noted that it is expected that:
• the details of the process undertaken will be fully described
• the rationale for weights and scores will be fully explained
• scores will be tested for robustness
Failure to do this may cause delays in the approval process.