Human Factor Effects in Estimating

Stradling, Steven G. & Skitmore, Martin (1991) Human Factor Effects in Estimating. In Transactions NORDNET '91: 1st joint INTERNET/ICEC Forum: The Practice and Science of Project Management, 2-5 June 1991, The Norwegian Institute of Technology, Trondheim, Norway.


This paper describes a postal survey of UK Quantity Surveyors to relate human factors, such as experience and personality, to early stage estimating expertise. Composite variables were derived by factor analysis and examined against estimates of average national prices for several types of building.

The results indicate a coefficient of variation of 20.5% (17% mean modulus) for the estimates of the 82 respondents. The analysis suggests that expertise does not generalise across generic contract types. It was found that subjects with greater current experience in estimating prices of commercial buildings, who thought training, attribution, length of service, efficiency and discernment to be important, and who are particularly client oriented, tended to overestimate. Subjects with greater current experience in estimating prices of industrial buildings, and who thought cost limits and self-discipline to be important, tended to underestimate.

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ID Code: 4532
Item Type: Conference Paper
Refereed: Yes
Keywords: Estimating, human factors, expertise, accuracy, early stage design
Subjects: Australian and New Zealand Standard Research Classification > BUILT ENVIRONMENT AND DESIGN (120000) > BUILDING (120200) > Quantity Surveying (120203)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 1991 (please consult author)
Deposited On: 19 Jul 2006 00:00
Last Modified: 09 Jun 2010 12:33

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