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. Author manuscript; available in PMC: 2023 Jan 1.
Published in final edited form as: Appetite. 2021 Sep 22;168:105707. doi: 10.1016/j.appet.2021.105707

Figure 2. Food Incentive Delay (FID) Task Design.

Figure 2.

During the FID, each trial began with a cue indicating the participant would have the opportunity to earn a food reward (reward trials; denoted by a blue triangle) or not have the opportunity to earn a food reward (no incentive trials; denoted by a blue hexagon). Following a variable delay of 1-6 seconds, a target appeared (green circle) prompting the participant to press a button as quickly as possible (as previously trained during a practice trial). This was followed by another variable delay of 1-6 seconds, after which feedback was provided indicating whether the button press occurred within the time limit (success) or not (fail). Trials were separated by an intertrial interval of 1-6 seconds.