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Hello,
For my research, I would like to estimate the association between two latent variables using a spline/piecewise regression model with a single knot. The model should estimate two separate linear regression lines and the knot location (see attached image).
The two latent variables are anxiety and negative affectivity and both are measured with 7 indicators on a 1-5 Likert Scale.
On this forum, I read some topics about spline models in a growth model context, but I do not know whether such models can easily be transformed to spline models suitable for estimating associations between two latent variables using cross-sectional data.
I found an article by Jeffrey Harring (https://journals.sagepub.com/doi/pdf/10.1177/0013164413504295) that explains the mathematics of estimating such a model.
Is it possible to program this model in OpenMx?
Best wishes,
Paul