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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).
"Rather than having separate indicators for different conditions, each condition should be specified as a condition above and then contrasts will be created for each. I have made the appropriate changes"
RPoldrack (about eight years ago)
Definition contributed by DLau about eight years ago:In the embedded Figures Test, the research participant is shown a complex background figure and asked to describe it. After this, the participant is shown a target (such as the outline of a triangle) and asked to locate the target amid the background figure.View Term Event Log