noun
item response theory; IRT
A mathematical framework used in psychometrics and educational measurement to model the relationship between latent traits and item responses.
項目応答理論は、テストの難易度と受験者の能力を同時に推定するのに使われる。
Item response theory is used to estimate test difficulty and examinee ability simultaneously.
Compound of 項目 (item), 応答 (response), and 理論 (theory), likely a calque from English 'item response theory'.