John Ridley Stroop (; March 21, 1897 – September 1, 1973), better known as J. Ridley Stroop, was an American psychologist whose research in cognition and interference continues to be considered by some as the gold standard in attentional studies and profound enough to continue to be cited for relevance into the 21st century. However, Christianity was the real passion of his life; psychology was simply an occupation. Soon after producing his dissertation on the color-word task to obtain his Ph.D, Stroop left experimental psychology. He produced only two other papers related to the color-word task. Stroop continued to teach psychology and Biblical studies until he retired in 1967. He served one year as dean of Ohio Valley College in Parkersburg, West Virginia before returning to Lipscomb as Emeritus Professor of Biblical Studies until his death on September 1, 1973.
- Studies of interference in serial verbal reactions (1935)