THe question this time is Cost Performance on projects are often poor what are t

THe question this time is
Cost Performance on projects are often poor what are the possible casues of this and how can it be improved?
The outline is:
Introduction
(include examples and statics to support the view that Cost Performance on projects are often poor)
Causes:Poor Project Selection (discuss non-numeric and numeric models the impact of risk and the application of selection models in practice)Poor cost estimation (5 mains estimation method Parametric Cost Estimating Indexing Cost Capacity and Factorial) (improvement: suggesting the accuracy of the estimate Sensitivity Analysis measuring accuracy removing errors)Poor Cost Control Process (Contract terms: Alternative contract term eg Fixed price Target price Guaranteed Maximum Price Simple Reimbursement Reimbursement plus Management Fee Cost plus and in practice; Bonds Retentions Incentives and Penalties the base line project plan)Conclusion:Summarise the key to Good cost planning and the benefits of good cost planning.The following references might be of useReferencesProject Management Planning and Control Chapter 9: Project Estimation Rory Burke 2nd Edition Wiley 1992Project Management
Chapter 5: Commercial Management
Dennis Lock
5th Edition Gower 1992Project Management. A Managerial Approach Chapter 2: Project Evaluation and Selection Meredith and Mantel 3rd Edition Wiley 1995Competitive Advantage
Chapter 5: Technology and Competitive Advantage Michael Porter Free Press 1985