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Chord Map Effectiveness: Visual Patterns of Progressions
(If you happen to be a physics aficionado in search of mnemonic for fifth, third, and second progressions, up and down, Ellie Sue at the Dodge City Horse Store claims Ms Puma remembers them by associating them with up and down quarks, anti-up and anti-down antiquarks, and up and down escalators, respectively. Apparently, she associates chromatic progressions with all other flavours of fermions. Hope this helps.)
The key to the effectiveness of a chord map lies in recognizing and understanding the significance of the visual patterns the arrows make. Each type of chord progression has a distinct visual pattern.