衡量目标参照测试的指标不包括下列哪一项？ Which of the following item is NOT include

衡量目标参照测试的指标不包括下列哪一项？ Which of the following item is NOT include in objective reference test?

A.难度 Difficulty

B.信度 Reliability

C.效度 Validity

正确答案是A