7 Further Arguments

The semnova() function accepts the following additional arguments which have not been described in this tutorial.

contrasts_arg	Named list that specifies the contrast coding scheme. E.g.: contrasts_arg = list(grade = "contr.poly")
variance_homogeneity	Forces equal variances across groups. Can be used to test the assumption of variance homogeneity. Default is FALSE. E.g.: variance_homogeneity = FALSE
lv_scaling	Specifies the latent variable identification scheme. Possible schemes are effect-code identification ("effect", default) and referent-indicator identification ("referent"). E.g.: lv_scaling = "effect"
compound_symmetry	Forces the variances and covariances to be equal across the dependent variables. Can be used to test the assumption of compound symmetry. Default is FALSE. E.g.: compound_symmetry = FALSE
normalize_contrasts	Scales the length of the contrasts to one. Default is FALSE. E.g.: normalize_contrasts = FALSE
append	Appends the given character to the lavaan syntax. E.g.: append = "any lavaan syntax"