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Believing is Seeing: Confirmation Bias Studies in Software Engineering
RISE, Swedish ICT, SICS. RISE, Swedish ICT, SICS, Security Lab.
Number of Authors: 2
2015 (English)Conference paper, (Refereed)
Abstract [en]

Confirmation bias is the human tendency to search for, collect, interpret, analyse, or recall information in a way that confirms one’s prior beliefs or preferences. In this paper, we review previous research and demonstrate confirmation bias and its effect in two software engineering contexts. The first study documents that managers bias their interpretation of randomly generated project data towards confirmation of their preferred contract type. The second study reports from an analysis of the results of 35 published comparisons of regression and analogybased cost estimation models. Twenty of these comparisons evaluate the performance of a self-developed analogy-based estimation model relative to a regression-based model and may be biased towards finding evidence confirming a better accuracy of their own model. A statistical meta-analysis of all 35 comparisons showed that the analogy-based models were more accurate than the regression-based models, whereas removing the 20 comparisons where the researchers evaluated their own models gave the opposite result. Our results support the idea that it is important to consider the presence and degree of confirmation bias when collecting information about topics where there are prior preferences, beliefs, or vested interests to avoid misleading conclusions.

Place, publisher, year, edition, pages
2015, 10. 92-95 p.
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:ri:diva-24468DOI: 10.1109/SEAA.2015.56OAI: oai:DiVA.org:ri-24468DiVA: diva2:1043552
Conference
41st Euromicro Conference on Software Engineering and Advanced Applications, EUROMICRO-SEAA 2015
Available from: 2016-10-31 Created: 2016-10-31Bibliographically approved

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CiteExportLink to record
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  • apa
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  • ieee
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