An empirical study on memory bias situations and correction strategies in ERP effort estimation

I.P. Erasmus, Maia Daneva

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    2 Citations (Scopus)
    35 Downloads (Pure)


    An Enterprise Resource Planning (ERP) project estimation process often relies on experts of various backgrounds to contribute judgments based on their professional experience. Such expert judgments however may not be biasfree. De-biasing techniques therefore have been proposed in the software estimation literature to counter various problems of expert bias. Yet, most studies on de-biasing focus on systematic bias types such as bias due to interdependence, improper comparisons, presence of irrelevant information, and awareness of clients’ expectations. Little has been done to address bias due to experts’ memory. This is surprising, knowing that memory bias retrieval and encoding errors are likely to affect the estimation process outcome. This qualitative exploratory study investigates the memory bias situations encountered by ERP professionals, and the possible coping strategies to problems pertaining to those situations. Using interviews with 11 practitioners in a global ERP vendor’s organization, we explicate how experts retrieve and encode stored memory, what kind of errors they experience along the way, and what correction techniques they were using. We found that both errors due to memory retrieval and due to memory encoding seemed to lead to project effort underestimation. We also found that the most common memory correction strategy was the use of mnemonics.
    Original languageUndefined
    Title of host publication16th International Conference on Product-Focused Software Process Improvement, PROFES 2015
    EditorsPekka Amrahamsson, Luis Corral, Markku Olivo, Barbara Russo
    Place of PublicationLondon
    Number of pages16
    ISBN (Print)978-3-319-26843-9
    Publication statusPublished - 5 Jan 2016
    Event16th International Conference on Product-Focused Software Process Improvement, PROFES 2015 - Bolzano, Italy
    Duration: 2 Dec 20154 Dec 2015
    Conference number: 16

    Publication series

    NameLecture Notes in Computer Science
    PublisherSpringer Verlag


    Conference16th International Conference on Product-Focused Software Process Improvement, PROFES 2015
    Abbreviated titlePROFES


    • EWI-26937
    • Project effort estimation
    • Expert judgments
    • Exploratory qualitative research method
    • METIS-316888
    • Memory Bias
    • Empirical Study
    • IR-100195
    • Grounded Theory

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