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irt (version 0.2.9)

convert_model: Convert model parameters from one model to another

Description

This is especially handy for converting IRT models with less parameters (such as 1 parameter logistic model) to higher dimensional models such as three parameter logistic model.

Usage

convert_model(ip, target_model = "3PL")

# S4 method for Item convert_model(ip, target_model = "3PL")

# S4 method for Itempool convert_model(ip, target_model = "3PL")

# S4 method for Testlet convert_model(ip, target_model = "3PL")

Value

An 'Item' object with new model parameters will be returned.

Arguments

ip

An Item-class or Itempool-class object

target_model

The target model that the conversion will be made.

Author

Emre Gonulates