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TAM (version 1.9-0)

Test Analysis Modules

Description

Includes marginal and joint maximum likelihood estimation of uni- and multidimensional item response models (Rasch, 2PL, 3PL, Generalized Partial Credit, Multi Facets, Nominal Item Response, Structured Latent Class Analysis, Mixture Distribution IRT Models, Located Latent Class Models). Latent regression models and plausible value imputation are also supported.

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Version

Install

install.packages('TAM')

Monthly Downloads

3,429

Version

1.9-0

License

GPL (>= 2)

Maintainer

Alexander Robitzsch

Last Published

June 30th, 2015

Functions in TAM (1.9-0)

data.fims.Aus.Jpn.scored

Dataset FIMS Study with Responses of Australian and Japanese Students
tam.modelfit

Model Fit Statistics in TAM
tam.threshold

Calculation of Thurstonian Thresholds
data.mc

Dataset with Raw and Scored Responses from Multiple Choice Items
designMatrices

Generation of Design Matrices
tampv2datalist

Conversion of Plausible Value Object into Datalist
data.sim.mfr

Simulated Multifaceted Data
tam.latreg

Latent Regression Model
data.cqc

More Datasets and Examples (Similar to ConQuest Examples)
tam.mml.3pl

3PL Structured Item Response Model in TAM
msq.itemfit

Mean Squared Residual Based Item Fit Statistics (Infit, Outfit)
data.ctest

Some C-Test Datasets
tamaan

Wrapper Function for TAM Language
IRT.threshold

Thurstonian Thresholds and Wright Map for Item Response Models
tam.mml

Test Analysis Modules: Marginal Maximum Likelihood Estimation
tam.ctt

Classical Test Theory Based Statistics and Plots
TAM-internal

Computation of intermediate information
IRT.WrightMap

Wright Map for Item Response Models by Using the WrightMap Package
data.sim.rasch

Simulated Rasch data
IRT.likelihood

Extracting Individual Likelihood and Individual Posterior
data.gpcm

Dataset with Ordered Indicators
IRT.expectedCounts

Extracting Expected Counts
IRTLikelihood.cfa

Individual Likelihood for Confirmatory Factor Analysis
plot.tam

Plot Function for Unidimensional Item Response Models
lavaanify.IRT

Slight Extension of the lavaan Syntax, with Focus on Item Response Models
tam.wle

Weighted Likelihood Estimation and Maximum Likelihood Estimation of Person Parameters
TAM-package

Test Analysis Modules
IRT.irfprob

Extracting Item Response Functions
data.examples

Datasets data.ex in TAM Package
tam.fit

Item Infit and Outfit Statistic
predict

Expected Values and Predicted Probabilities for Fitted TAM Models
IRT.residuals

Residuals in an IRT Model
IRT.drawPV

Function for Drawing Plausible Values
data.geiser

Dataset from Geiser et al. (2006)
doparse

Parsing a String with DO Statements
data.janssen

Dataset from Janssen and Geiser (2010)
plotDevianceTAM

Deviance Plot for TAM Objects
tamaanify

Function for Parsing TAM Input
tam.fa

Bifactor Model and Exploratory Factor Analysis
tam.se

Standard Error Estimation
data.numeracy

Dataset Numeracy
IRT.informationCurves

Item and Test Information Curve
IRT.factor.scores

Extracting Factor Scores in TAM
data.timssAusTwn

Dataset TIMSS 2011 of Australian and Taiwanese Students
tam.jml

Joint Maximum Likelihood Estimation
IRT.data.tam

Extracting Item Response Dataset
anova-logLik

Likelihood Ratio Test for Model Comparisons and Log-Likelihood Value
tam.pv

Plausible Value Imputation
cfa.extract.itempars

Extracting Item Parameters from a Fitted cfa Object in lavaan
IRT.linearCFA

Linear Approximation of a Confirmatory Factor Analysis