Procedures Based on Item Response Theory Models for the Development of Short Test Forms

[Up] [Top]

Documentation for package ‘shortIRT’ version 2.0.0

Help Pages

bench Benchmark Procedure
define_targets Define theta targets
IRT Compute expected probability for a single dichotomous item
irt_estimate Estimate of theta via Maximum Likelihood
isa Item Selection Algorithm
item_info Item Information Functions (multiple items, I_i(theta))
i_info Item Information Function (single item, I_i(theta))
logLik_theta Log-likelihood estimation of theta
mpirt Compute expected probability for multiple dichotomous items
obsirt Simulate dichotomous responses according to IRT probabilities
plot.bench Method for plotting the TIF of the test/short test form
plot.iifs Method for plotting the item information functions
plot.isa Method for plotting the TIF of the test/short test form
plot.theta_target Method for plotting the TIF of the test/short test form
plot.tif Plot TIF
summary.bench Method for the summary of the test/short test form
summary.isa Method for the summary of the test/short test form
summary.theta_target Method for the summary of the test/short test form
theta_target Theta target procedure
tif Test Information Function (TIF)