Differential Item Functioning (DIF)

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A characteristic of an item on a test where different groups of test-takers with equivalent ability levels have different probabilities of answering the item correctly, suggesting potential bias.

Lon Blythe
CEO, Aside from being a white-hat hacker, Lon is a tech security analyst, cybersecurity professional, and a father of three. We’re not sure how he juggles all of that but the whole team agrees- he’s doing a fine job at it.