Discussion
Different item functioning probably reveals
Answer: B
Differential item functioning means people of equal ability from different groups have different chances of passing an item. That points to a bias in the construct the item taps, because the item measures something besides the intended trait for one group.
Administration bias comes from differences in how a test is given. Interpretation bias is about the meaning drawn from scores in different groups. Predictive bias occurs when a test predicts a criterion differently across groups. None of those is what item-level functioning differences show.
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