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Hypothesized structural equation model (a) and final model (b) for single- and multi-group modeling. Note. Observed indicators are omitted. storyprob = Story Problems; matrix = Matrix Reasoning; concept = Concept formation; G2/4 = Grade 2/4; comp = Computation skill; wm = Working memory; ol = Oral language; wrf = Word reading fluency; wp = Word-problem solving; add = Addition; sub = Subtraction; ddas = Double-digit addition and subtraction.
