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Oct 25, 2023
The 2023 PreACT 8/9 Norming Study
This document describes the development of the PreACT® 8/9 norms for PreACT 8/9 tests administered from fall 2020 to spring 2023, to be used for reporting during the 2023–2024 academic year.
Jul 25, 2023
What's the DIF? Item Properties Associated With DIF on the ACT
This study explores item content characteristics, psychometric properties, and item context variables associated with differential item functioning (DIF), which is a statistical indicator of potential item bias.
Nov 30, 2021
An Investigation of Speededness as a Possible Explanation for Mode Effects on the ACT
Investigates the potential interactions between the degree of speededness and observed mode differences in student performance for the ACT test.