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- Gren, Lucas, 1984
(författare)
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A fourth explanation to Brooks' Law - The aspect of group developmental psychology
- 2017
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Ingår i: 2017 Ieee/Acm 10th International Workshop on Cooperative and Human Aspects of Software Engineering (Chase 2017). - : IEEE. - 9781538640395
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Konferensbidrag (refereegranskat)abstract
- Brooks' Law is often referred to in practice and states that adding manpower to a late software project makes it even later. Brooks' himself gave three explanation only related to concrete task-related issues, like introducing new members to the work being done, communication overheads, or difficulty dividing some programming tasks. Through a description of group developmental psychology we argue for a fourth explanation to the law by suggesting that the group will fall back in its group development when new members are added, resulting in rework setting group norms, group goals, defining roles etc. that will also change over time. We show that this fourth explanation is important when trying to understanding Brooks' Law, and that adding the group developmental perspective might help software development organizations in managing projects.
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| 2. |
- Gren, Lucas, et al.
(författare)
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Is it possible to disregard obsolete requirements? : An initial experiment on a potentially new bias in software effort estimation
- 2017
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Ingår i: Proceedings - 2017 IEEE/ACM 10th International Workshop on Cooperative and Human Aspects of Software Engineering, CHASE 2017. - : Institute of Electrical and Electronics Engineers Inc.. - 9781538640395 ; , s. 56-61
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Konferensbidrag (refereegranskat)abstract
- Effort estimation is a complex area in decision-making, and is influenced by a diversity of factors that could increase the estimation error. The effects on effort estimation accuracy of having obsolete requirements in specifications have not yet been studied. This study aims at filling that gap. A total of 150 students were asked to provide effort estimates for different amounts of requirements, and one group was explicitly told to disregard some of the given requirements. The results show that even the extra text instructing participants to exclude requirements in the estimation task, had the subjects give higher estimates. The effect of having obsolete requirements in requirements specifications and backlogs in software effort estimation is not taken into account enough today, and this study provides empirical evidence that it possibly should. We also suggest different psychological explanations to the found effect. © 2017 IEEE.
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