The 74 Million – Beth Hawkins
“Quick — without looking it up on Google, can you define “edge-aversion”? Here’s a hint: It’s a decision-theory term describing what’s also known as middle bias. That is, a test-taker’s tendency to pick anything but the top or bottom option on a multiple-choice question. To a psychometrician, it’s a tell that the answer was a guess. Give testing experts an entire exam, and you might be surprised what they can discern.” (more)