Half a century of research on the Stroop effect: An integrative review.

Abstract

2 According to Jensen and Rohwer (1966), Jaensch (1929) was the first to combine the word and color stimuli in a potentially conflicting situation.Perhaps, then, Jaensch should receive at least partial credit, but the "Jaensch-Stroop effect" is an extremely unwieldy label.3 Stroop changed the color-naming control-condition cards from Experiment 2 to Experiment 3. The solid-color squares were replaced by a nonalphanumeric character, which, in Stroop's view, was more like a letter in appearance and more easily colored to match the shades of the letters on the experimental cards.The stimulus Stroop chose was the swastika.