discriminationToFactorLoading: Discrimination (IRT) to Standardized Factor Loading.

In petersenlab: A Collection of R Functions by the Petersen Lab

Discrimination (IRT) to Standardized Factor Loading.

Description

Convert a discrimination parameter in item response theory to a standardized factor loading.

Usage

discriminationToFactorLoading(a, model = "probit")

Arguments

a	Discrimination parameter in item response theory.
model	Model type. One of: "logit" "probit"

Details

Convert a discrimination parameter in item response theory to a standardized factor loading

Value

Standardized factor loading.

See Also

https://aidenloe.github.io/introToIRT.html https://stats.stackexchange.com/questions/228629/conversion-of-irt-logit-discrimination-parameter-to-factor-loading-metric

Other IRT: deriv_d_negBinom(), fourPL(), itemInformation(), reliabilityIRT(), standardErrorIRT(), test_info_4PL()

Examples

discriminationToFactorLoading(0.5)
discriminationToFactorLoading(1.3)
discriminationToFactorLoading(1.3, model = "logit")

petersenlab documentation built on Aug. 18, 2025, 5:14 p.m.