stroop

The Stroop Effect is a psychological phenomenon where it takes longer to name the color of the ink of a word when the word itself denotes a different color. This test measures cognitive interference and reaction time.

📘 Terminology

Configuration Parameters

|Key|Type|Default|Description| |-|-|-|- |trials|number|20|Trial number| |congruentPct|number|50|Percentage of trials that should be congruent (word matches ink color). The rest will be incongruent.| |iti|number|800|Inter-trial interval in milliseconds – the pause between two consecutive stimuli.| |timeout|number|4000|Maximum time (in ms) allowed for a response. If the user doesn’t respond within this window, the trial is marked as a timeout.| |track|string|ink|Determines what the participant must identify: "ink" for the color of the text (standard Stroop test), or "word" to identify the written word.|

Result Object Structure

|Key|Type|Description| |-|-|-| |index|number|Trial number| |word|string|Displayed word| |ink|string|the actual color the text is printed in| |type|string|"congruent" or "incongruent"| |rt|number|Reaction time in ms (if not timed out)| |correct|boolean|Whether the response was correct| |timedOut|boolean|true if user did not respond in time|