Process Approach Article of the Day v2.0, article 1: Lippa & Davis 2010: "Inhibition/Switching Is not Necessarily Harder than Inhibition: An Analysis of the D-KEFS Color-Word Interference Test" bit.ly/3rZcVVh
This is a popular issue on the D-KEFS CWIT: what to make of it when the "harder" trial is counterintuitively easier for a patient.
In comparing people who displayed a "typical" vs. "atypical" (C4 Switching faster than C3 Inhibition) pattern for time, there were no differences on conventional neuropsych measures. People with an "atypical" error pattern had better memory and language skills.
The authors floated possibilities including practice effects or difficulty with color naming or learning characteristics. But the question is really left dangling for the audience. So... why does this happen?
What Edith said--which makes total sense--is that some people experience a "release from inhibition" on the final trial. Brains that struggle with the inhibition required by C3 are relieved to find that they only have to do that on half of the items on C4.
C4 is not a complex struggle between 2 competing rules for everyone. For some it's like C3, but with a lot more opportunities to just read the darn word and not have to worry about the impossibly difficult inhibition rule half of the time. So those folks do better on C4. Ta-da.
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