eRm

Information criteria

Fit Linear Logistic Models with Relaxed Assumptions (LLRA)

Estimation of linear logistic test models

Estimation of linear partial credit models

Estimation of linear rating scale models

Computation of Andersen's LR-test.

Martin-Löf's Likelihood-Ratio-Test

A Function to Perform Nonparametric Rasch Model Tests

Estimation of partial credit models

Person Misfit

Estimation of Rasch Models

Estimation of rating scale models

Control Object

Sample Objects

Rasch Sampler Package

Person Separation Reliability

Item-Specific Wald Test

Analysis of Deviances for Rasch Models

Analysis of Deviance for Linear Logistic Models with Relaxed Assumptions

Automatized Construction of LLRA Design Matrix

Convenient Collapsing of LLRA Design Matrix

Data for Computing Extended Rasch Models

Various model tests and fit indices

Calculate Item Information for 'eRm' objects

Residuals, Personfit and Itemfit Statistics

Prepare Data Set for LLRA Analysis

An Artificial LLRA Data Set

An Artificial LLRA Data Set

An Artificial LLRA Data Set

Estimation of Person Parameters

Example User Function

Confidence intervals plot of item parameter estimates.

Plot Treatment or Covariate Effects for LLRA

ICC Plots

Plot Information For 'eRm' objects

Person-Item Map

Pathway Map

Plot Trend Effects for LLRA

Predict methods

Methods for extended Rasch models

Sampling Binary Matrices

Controls for the Sampling Function

Extracting a Matrix

Extracting Encoded Sample Matrices

Calculating Statistics for the Sampled Matrices

Simulation of 2-PL Data

Simulation locally dependent items

Simulation of Rasch homogeneous data

Simulation of multidimensional binary data

Stepwise item elimination

Summary Method for Control Objects

Summary Methods for Sample Objects

Summarizing Linear Logistic Models with Relaxed Assumptions (LLRA)

Calculate Test Information For eRm objects

Computation of item-category treshold parameters.

Example Data