User philchalmers

25 votes

Item Response Theory vs Confirmatory Factor Analysis

answered Oct 15, 2014 at 3:12

21 votes

Is R output reliable (specially IRT package ltm)

answered Apr 26, 2014 at 18:53

11 votes

Accepted

Is this a Monte Carlo simulation?

answered Oct 22, 2016 at 19:27

7 votes

Accepted

Cramer's $\phi $ for three-way contingency tables

answered Apr 24, 2015 at 16:00

7 votes

Accepted

Meaning of large values of parameter b (|b| >>) 4 in IRT theory

answered Aug 28, 2015 at 23:19

7 votes

Accepted

Estimating ability using IRT when the model parameters are known

answered Jan 19, 2013 at 23:30

6 votes

Is there an R package which implements weighted maximum likelihood for Rasch models?

answered Dec 30, 2012 at 3:39

6 votes

Dealing with least and maximum score in IRT

answered Jul 30, 2013 at 23:09

6 votes

Accepted

How to interpret this lavaan structural equation model?

answered Jun 21, 2015 at 14:22

5 votes

Accepted

Why pnorm function and sum of dnorm function differs for same input?

answered May 27, 2015 at 17:04

5 votes

How to check goodness of fit for a graded response model in R

answered May 20, 2014 at 21:25

5 votes

Accepted

Which R package to use to conduct a latent class growth analysis (LCGA) / growth mixture model (GMM)?

answered Jan 22, 2013 at 17:11

5 votes

Accepted

IRT in R: Does anyone know of an IRT item calibration function that can cope with NA's?

answered Mar 23, 2013 at 2:17

5 votes

Accepted

Is it always better to extract more factors when they exist?

answered Oct 11, 2015 at 20:45

5 votes

Difference between empirical and marginal reliability of an IRT model

answered Sep 20, 2019 at 15:47

5 votes

Accepted

What is the role of non-anchor items when equating scales across studies using IRT?

answered Oct 17, 2020 at 17:08

4 votes

In 1PL model, zero ability equals average ability, or change accuracy?

answered Nov 8, 2018 at 15:01

4 votes

Simulating responses to a test for item-response theory

answered Jan 15, 2013 at 18:02

4 votes

Accepted

How is a bifactor IRT model different from a factor analysis?

answered Jul 13, 2013 at 3:14

4 votes

Accepted

Longitudinal item response theory models in R

answered Jun 26, 2014 at 18:28

4 votes

Accepted

Is it possible to do IRT distractor analysis using R?

answered Apr 2, 2015 at 2:18

4 votes

Item discrimination of poorly targeted items

answered Apr 2, 2015 at 2:49

3 votes

Accepted

Implementing nominal model from Polytomous Item Response Theory

answered Jul 6, 2014 at 22:50

3 votes

Understanding and applying Item Response Theory

answered Apr 2, 2015 at 3:12

3 votes

Accepted

How to interpret meaning of regressors in this logistic regression model?

answered Aug 14, 2015 at 19:59

3 votes

Accepted

Item reliability or fit in IRT-based adaptive tests?

answered Apr 18, 2014 at 18:49

3 votes

Accepted

IQ adaptive test items in 1pl, 2pl or 3pl IRT model?

answered Jun 11, 2013 at 20:58

3 votes

IRT/Rasch modeling with very large N

answered May 7, 2013 at 15:30

3 votes

What's the criteria of deleting item?

answered Jul 22, 2017 at 4:42

3 votes

Accepted

IRT monotonicity

answered Mar 12, 2017 at 14:29

Stack Exchange Network

62 Answers

Item Response Theory vs Confirmatory Factor Analysis

Is R output reliable (specially IRT package ltm)

Is this a Monte Carlo simulation?

Cramer's $\phi $ for three-way contingency tables

Meaning of large values of parameter b (|b| >>) 4 in IRT theory

Estimating ability using IRT when the model parameters are known

Is there an R package which implements weighted maximum likelihood for Rasch models?

Dealing with least and maximum score in IRT

How to interpret this lavaan structural equation model?

Why pnorm function and sum of dnorm function differs for same input?

How to check goodness of fit for a graded response model in R

Which R package to use to conduct a latent class growth analysis (LCGA) / growth mixture model (GMM)?

IRT in R: Does anyone know of an IRT item calibration function that can cope with NA's?

Is it always better to extract more factors when they exist?

Difference between empirical and marginal reliability of an IRT model

What is the role of non-anchor items when equating scales across studies using IRT?

In 1PL model, zero ability equals average ability, or change accuracy?

Simulating responses to a test for item-response theory

How is a bifactor IRT model different from a factor analysis?

Longitudinal item response theory models in R

Is it possible to do IRT distractor analysis using R?

Item discrimination of poorly targeted items

Implementing nominal model from Polytomous Item Response Theory

Understanding and applying Item Response Theory

How to interpret meaning of regressors in this logistic regression model?

Item reliability or fit in IRT-based adaptive tests?

IQ adaptive test items in 1pl, 2pl or 3pl IRT model?

IRT/Rasch modeling with very large N

What's the criteria of deleting item?

IRT monotonicity