In Item Response Theory Analyses, the Item Characteristic Called the Difficulty

Multiple Choice

In item response theory analyses, the item characteristic called the difficulty threshold represents

A) the level of ability at which a test taker has a 50% likelihood of endorsing the item.
B) the internal consistency of the measure.
C) how well an item distinguishes between people who are high and low on the trait being assessed.
D) the structural validity of the measure.