Stroopium is a game implementation of the Stroop Effect Test, to be specific, in the second test and in a variation of the first test.

The game consist of choosing the right answer, in the case of the first test, the player only needs to read the word. The real challenge comes when playing the second test, the player needs to select the color of the ink that the word is printed.

This make you take a little longer two answer correctly and sometimes even fail.

You can play against the clock or play until you fail.

Keep the records of your games and challenge yourself to beat your own records.


Stroop Effect

The Stroop effect is a demostration of interference in the reaction time of a task. When the name of a color is printed in a color that is not denoted by the naming the color of the word takes longer and is more prone to error than when the color of the ink matches the name of the color. The effect is named after John Ridley Stroop, who first published the effect in English in 1935. However, the effect was first published in 1929 in Germany by Erich Rudolf Jaensch, and its roots can be followed back to works of James McKeen Cattell and Wilhelm Maximilian Wundt in the nineteenth century. Stroop administrated, in his experiments, three different kinds of stimuli:

  • Names of colors appeard in black ink
  • Names of colors in a different ink than the color named
  • Squares of a given color

First test: Names of colors in black ink

The task required is simply read the words.

Second test: Names of colors in a different ink

The task is to say the color of the ink.

Third test: Squares of different colors

The task is to say the color of the square.

Experiment findings

Three experimental findings are recurrently found in Stroop experiments.

A first finding is semantic interference, which states that naming the ink color of neutral stimuli (when the ink color and the word do not interfere with each other. First experiment) is faster than in incongruent conditions.

The second finding, semantic facilitation, explains the finding that naming the ink of congruent stimuli is faster (when the ink color and the word match) than when neutral stimuli are present.

The third finding is that both semantic interference and facilitation disappear when the task consists of reading the word instead of naming the ink.

The Stroop effect has been widely used in psychology. Among the most important uses is the creation of validated psychological tests based on the Stroop effect permit to measure the selective attention capacity and skills, as well as their processing speed ability and cognitive flexibility.