TCC: Compute test characteristic curve (TCC) for items from a...

In falkcarl/mpirt: Semi- and non-parametric item response theory

Compute test characteristic curve (TCC) for items from a fitted MP model.

Description

Compute test characteristic curve (TCC) for items from a fitted MP model.

Usage

TCC(x, items, theta = seq(-5, 5, 0.1), scale = FALSE, scaletest = FALSE)

Arguments

x	Fitted mxModel (e.g., from fitMP.
items	Vector of indices corresponding to items to include in TCC computations.
theta	Grid for theta, the latent trait.
scale	Logical value. If TRUE, divide each items' expected score curve by the total number of categories so that the expected sore curve is bound between 0 and 1.
scaletest	Logical value. If TRUE, divide the TCC by the total number of items.

falkcarl/mpirt documentation built on July 11, 2024, 12:09 a.m.