Item Parameters Which Are Invariant With Respect to Group Ability Level
- Author(s):
- Gulliksen, Harold O.
- Publication Year:
- 1950
- Source:
- American Psychologist, v5 n7 p288, 1950
- Document Type:
- Article
- Page Count:
- 1
- Subject/Key Words:
- Difficulty Level, Test Construction, Test Validity