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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).
Definition contributed by CTorgerson about six years ago:"Participants are required to name, as rapidly as possible, items presented visually on a chart. Each chart contains five rows of 10 stimuli from a category of five items. Categories include colors, lowercase letters, digits, and common objects. The tests are scored for total number of errors and time in seconds taken to complete each chart." - (Meyer, Wood, Hart, & Felton 1998)REVISION 1
Definition contributed by DLau about eight years ago:A task which involves rapidly naming a series of color blocks, letters, and pictures.View Term Event Log