1. Based on a sample of projects, to provide a measure of the average optimism bias at business case for each project type - for works duration, project duration, capital expenditure, operating expenditure, unitary payments and benefits shortfall
2. To provide an indication of critical project risk areas which have negative impacts on optimism bias
3. To determine patterns, if any, within the project sample
4. To provide a method for assessing optimism bias levels in current and future projects and to provide best practice guidelines both for reducing risks within project options and for managing project risks during the project life cycle.