Multi-Step Decision-Making Task (MSDM)

FREE for use with an Inquisit Lab or Inquisit Web license.

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Multi-Step Decision-Making Task

The Multi-Step Decision-Making Task (MSDM) task investigates people's decision making of multi-step problems within a reinforcement paradigm. This script implements Millisecond's version of the MSDM task. The implemented Inquisit procedure is based on Faulkner et al (2021) and is Millisecond's best guess effort of the implemented trainings and tests.
Duration: 45 minutes
(Requires Inquisit Lab)
(Run with Inquisit Web)
Last Updated
May 15, 2024, 5:21PM


Google ScholarSearch Google Scholar for peer-reviewed, published research using the Inquisit Multi-Step Decision-Making Task (MSDM).

Huys, Q. J. M., Eshel, N., O’Nions, E., Sheridan, L., Dayan, P., & Roiser, J. P. (2012). Bonsai trees in your head: how the pavlovian system sculpts goal-directed choices by pruning decision trees. PLoS Computational Biology, 8(3), e1002410–e1002410.

Faulkner, P., Huys, Q. J. M., Renz, D., Eshel, N., Pilling, S., Dayan, P., & Roiser, J. P. (2021). A comparison of “pruning” during multi-step planning in depressed and healthy individuals. Psychological Medicine, 1–9.