This interactive web demo is designed to help you experience the color-word Stroop phenomenon by means of a computerized, scaled-down version of J. Ridley Stroop's original classic study (i.e., his experiments 1 and 2). The demo is preceeded by a description of some of the historical threads leading to Stroop's 1935 study (i.e., the work of Donders and Cattell). To go straight to the Stroop demo, click on the icon above. For a description of some of the history, click here.