Electronic decision support for procurement management : evidence on whether computers can make better procurement decisions

We analyse how well purchasing managers are able to judge the likelihood of problems for a given purchasing transaction. The literature on clinical versus statistical prediction suggests that humans in general, including purchasing managers, are often outperformed by relatively simple statistical formulas for such kinds of tasks. Based on a vignette experiment of real purchasing transactions, we compare the performance of purchasing managers with freshmen students and with a statistical formula based on a cross-validated sample. The results show that the formula outperforms the humans, and that experienced purchasing managers do not outperform freshmen students. We conclude that it would make sense to use decision support systems in the daily practice of purchase management so that humans can devote their time to what they are good at, while being guided by statistical software that takes care of multi-dimensional decisions in noisy environments.

[1]  Robert Lorin Cook,et al.  Case‐Based Reasoning Systems in Purchasing: Applications and Development , 1997 .

[2]  Carsten Tautz,et al.  Systematic Maintenance of Corporate Experience Repositories , 2001, Comput. Intell..

[3]  A. Tversky,et al.  Judgment under Uncertainty: Heuristics and Biases , 1974, Science.

[4]  William M. Grove,et al.  Clinical versus mechanical prediction , 2000 .

[5]  David Knoke,et al.  Organizations in America : analyzing their structures and human resource practices , 1997 .

[6]  P. Meehl,et al.  Comparative efficiency of informal (subjective, impressionistic) and formal (mechanical, algorithmic) prediction procedures: The clinical–statistical controversy. , 1996 .

[7]  D. Knoke,et al.  Organizations in America: Analyzing Their Structures and Human Resource Practices , 1999 .

[8]  F. Wilcoxon.  Individual Comparisons by Ranking Methods , 1945 .

[9]  H. Garb,et al.  Clinical judgment, clinical training, and professional experience. , 1989, Psychological bulletin.

[10]  Ronald Batenburg,et al.  The External Management of Automation: Codebook for the Combined Data from the Netherlands and Germany , 2000 .

[11]  W. Grove,et al.  Clinical versus mechanical prediction: a meta-analysis. , 2000, Psychological assessment.

[12]  Steven E. Kaplan,et al.  The effects of predictive ability information, locus of control, and decision maker involvement on decision aid reliance , 2001 .

[13]  P. Meehl.  Causes and effects of my disturbing little book. , 1986, Journal of personality assessment.

[14]  Robert Lorin Cook.  Expert Systems in Purchasing: Applications and Development , 1992 .

[15]  S. Siegel,et al.  Nonparametric Statistics for the Behavioral Sciences , 2022, The SAGE Encyclopedia of Research Design.