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Stroop Effect -named after J. Ridley Stroop -described in the 1930s -referred to these tests as RCNs or Reading Color Names –where participants were required to repeat the written word with differing colored fonts
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Stroop Effect -named after J. Ridley Stroop -described in the 1930s -referred to these tests as RCNs or Reading Color Names –where participants were required to repeat the written word with differing colored fonts -and NCWs or Naming Colored Words – where participants were asked to verbally identify the color of each printed color name -Stroop noticed a large increase on the time take to complete the NCW portion of the test -doesn’t improve with practice! -theorized that there was interference caused by the automatization of reading -where the mind automatically determines the semantic meaning of the word and overrides its first impression which is the identification of the color -in other words – once we learn to read – this takes priority over identifying something more simple as color (i.e. RCN>NCW) -the Stroop test measures this interference -used to investigate other psychologic disorders as ADHD, schizophrenia and anorexia – areas that involve the Anterior Cingulate Gyrus (an area of the brain involved in attention, motivation, error detection)
Stroop test #1 (NCW) • Read the color of the word • Piece of cake right??
Stroop test #2 (RCN) • Read the word and time yourself – NOT the color • Still easy right?
Stroop test #3 • Now….. Read the color of the word and time yourself – NOT the word • Not so easy, eh??
The results • Reading a color is simple right? • Only when it matches the word! • When the color and word match its easy. That’s RCN • But you are actually reading the word and NOT the color – RCN>NCW • But when the RCN and NCW are different – you slow down!!!
Number Stroop test • Read the word in the box Set #1
Count the number of words in the box • Which task was easier/faster?? • Be honest …… You slowed down didn’t you? • Words still have priority
Again…say the words first • Then count the number of words in the box
Directional Stroop • Name the word in the box
Give the Direction of the word in the box • Is it on the top? On the left? Etc….. • Again – words take precedence? • Plus – girls are lousy at right/left! • Don’t laugh boys – at least girls ask for directions!!
Stroop for kids • What is the animal? (don’t read the word) • Aha! But you are still reading the word • Don’t believe me??
The Stroop effect and Pain • Researchers have postulated the Anterior Cingulate gyrus is also involved in pain processing • Your perception of pain can be decreased by performing the Stroop test • Don’t believe me? • Have your partner repeat these tests while you punch him/her! • JUST KIDDING!!!!!!