mirt (version 0.1-13)

specify.model: Specify confirmatory loadings

Description

The specify.model function scans user input to specify the confirmatory factor loadings. This function is nearly identical to specify.model, except that residuals terms are omitted.

Usage

specify.model()

Value

• Returns a model specification object to be used in confmirt.

Examples

model <- specify.model()
    F1 -> Item_1,   lam11, NA
    F1 -> Item_2,   lam12, NA
    F1 -> Item_3,   lam13, NA
    F1 -> Item_4,   lam14, NA
    F2 -> Item_4,   lam24, NA
    F2 -> Item_5,   lam25, NA
    F2 -> Item_6,   lam26, NA
    F2 -> Item_7,   lam27, NA
    F2 -> Item_8,   lam28, NA
    F1 <-> F2,      phi12, NA
    F1 <-> F1,      NA,     1
    F2 <-> F2,      NA,     1