The work was part of the IARPA funded BARD (Bayesian ARgumentation via Delphi) project which developed a BN tool tailored for intelligence analysts*
The study provides strong empirical evidence that if you provide basic training to use the BARD tool for constructing BNs then this improves the ability of individuals to solve complex probabilistic reasoning problems, compared to a control group receiving only generic training in probabilistic reasoning.
The full details of the paper (which includes a link to all of the problems and data) are:
Cruz, N., Desai, S. C., Dewitt, S., Hahn, U., Lagnado, D., Liefgreen, A., Phillips, K., Pilditch, T., and Tešić, M. (2020). "Widening Access to Bayesian Problem Solving". Frontiers in Psychology, 11, 660. https://doi.org/10.3389/fpsyg.2020.00660
*I declare an interest here: the BARD tool was developed from the AgenaRisk API.
** Again I declare an interest: I was involved with some of the training
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