J. Ridley Stroop

John Ridley Stroop (* 21. March 1897 in Murfreesboro, threshing floor lake; † 1. September 1973, buried in Nashville, threshing floor lake) was an US-American psychologist.

After it the Stroop effect is designated - a hallucination with colors and tones: If e.g. the word “blue” is shown in red color and a rehearsing and is asked for the writing color, then it is inclined to answer spontaneously “blue”. Only with more exact Hinsehen it becomes conscious it that the word is written actually in red color.

The advertisement makes itself the Stroop effect frequently too uses, around (legally prescribed) information as inconspicuously as possible e.g. to print on a packing.

Turned around one can more or less stress a statement during the writing by skillful layout of its text.


  • Stroop, J. R.: Studies OF interference in serial verbal reactions. Journal OF experimental Pschology 18 (1935) 643-662

Web on the left of


  > German to English > de.wikipedia.org (Machine translated into English)