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. Author manuscript; available in PMC: 2020 Feb 4.
Published in final edited form as: Neuropsychologia. 2018 Jun 23;123:41–54. doi: 10.1016/j.neuropsychologia.2018.06.016

Figure 1.

Figure 1

Schematic of the parametric demand selection task, (a) Example trials of the categorization task with a digit printed on a colored circle. The color cued which task to perform. The response mappings shown below the digits are for the reader’s reference and did not actually appear on the screen, (b) An example of six deck cues with their associated effort level pairing, based on the probability of task switching in 13 trials from that deck, (c) Schematic of block events during the Learning Phase. First, a symbol icon is presented for 1 sec, after which the participant completes 13 categorization trials with the associated cue tiled on the background, (d) Schematic of block events during the Test Phase. In the “Selection” epoch, the participant chooses between two symbol icons that are associated with two different effort levels, with a deadline of 3 sec. In the “Execution” epoch, the participant executes the effort level associated with the selected option, while the selected cue is tiled on the background.