A unique feature of the YLG is that there are three different types of intersections, which vary based on the timing of yellow light onset and the presence or absence of a car on the cross street. Some intersections have a 75% probability of crashing, others have a 25% probability of crashing, and the remaining intersections have a 50% probability of crashing. To prevent the task from promoting risk taking overall, the cumulative probability of crashing is set to 50% (i.e., 10 out of the 20 intersections have cars approaching on the cross street, resulting in a crash if the participant made a Go decision). This task feature is not explicitly communicated to participants, although participants have the opportunity to implicitly learn this information based on the differential timing of the yellow light onsets associated with each type of intersection. That is, intersections at which the light turns yellow earlier (i.e., when the participant was further away from the intersection) signal a greater crash probability. By including the different types of intersections, we are able to distinguish between adaptive and maladaptive risk taking, without promoting risk taking overall, as the cumulative probability of crashing is 50%. For more information about and access to the task, please visit: https://dsn.uoregon.edu/research/yellow-light-game/.
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Experimental conditions are the subsets of an experiment that define the relevant experimental manipulation.
In the Cognitive Atlas, we define a contrast as any function over experimental conditions. The simplest contrast is the indicator value for a specific condition; more complex contrasts include linear or nonlinear functions of the indicator across different experimental conditions.
An indicator is a specific quantitative or qualitative variable that is recorded for analysis. These may include behavioral variables (such as response time, accuracy, or other measures of performance) or physiological variables (including genetics, psychophysiology, or brain imaging data).