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Extract item parameter estimates and their covariance matrix from lavaan.

Usage

get_lavaan_pars(lavaan.object)

Arguments

lavaan.object

an object of class lavaan. Expected to be a 1-factor model estimated with std.lv = TRUE.

Value

A three-element list:

  • vector of parameter names taking the form "item.parameter"

  • list (one element per group) of vectors of item parameter estimates

  • list (one element per group) of covariance matrices of item parameter estimates