NDLI: The effect of the time unit on software development effort estimates

Content Provider	IEEE Xplore Digital Library
Author	Jorgensen, M.
Copyright Year	2015
Description	Author affiliation: Simula Res. Lab., Lysaker, Norway (Jorgensen, M.)
Abstract	Estimates of software development effort are frequently inaccurate and over-optimistic. In this paper we describe how changes in the granularity of the unit of estimation, e.g., work-days instead of work-hours, affects the effort estimates. We describe four psychological mechanisms, how they interact and discuss the expected total effect of higher granularity units on effort estimates. We argue that the mechanisms in general imply that higher granularity effort units will result in higher effort estimates, e.g., that estimating software development work in work-days or weeks will lead to higher estimates than when estimating in work-hours. A possible implication of this predicted effect is that, in contexts where there is a tendency towards under-estimation, estimation in work-days or weeks instead of work-hours leads to more realistic estimates.
Starting Page	1
Ending Page	5
File Size	421728
Page Count	5
File Format	PDF
e-ISBN	9781467367448
DOI	10.1109/SKIMA.2015.7399992
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-12-15
Publisher Place	Nepal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Context Conferences Estimation Psychology Europe Software Cost estimation Information management Human judgment
Content Type	Text
Resource Type	Article

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