Erratum to: Psychometrika Vol. 85, No. 1, 232–246, March 2020 https://doi.org/10.1007/s11336-020-09698-2
The original version of this article unfortunately contained a typographical mistake in one of the main formula. In Section 3, “A New Effect Size Index”, subscript “1” is missing in Eq. 8. The correct Eq. 8 is given below:
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20241223130802378-0623:S0033312300005354:S0033312300005354_Equ1.png?pub-status=live)