The aim of the study was to enrich our understanding of how managerial judgement influences the SID process. The study set out to identify the various stages in the SID process at which managers are consulted and how agreement is facilitated. The objectives were to identify the extent, or otherwise, by which heuristics, framing and/or consensus are admitted to the process. Analysis of the survey data provides evidence of different practices by which managerial judgement influences the SID-making process.
Most companies (90%) now use spreadsheet models to support SID making, and half use critical path analysis (project management software). Only 6% use no decision support software at all to aid project appraisal.