“…Most research that has examined language gains (1) considered these gains as the outcome of interest, such as intervention studies or correlational studies of associations between classroom quality or language practices and language learning (e.g., Burchinal et al, 2021;Hadley et al, 2022;Herrera et al, 2021;Rogde et al, 2019); (2) examined longitudinal associations between gains in one aspect of language and other language outcomes (e.g., Donnelly & Kidd, 2021;Rowe et al, 2012); or (3) described children's language gains over time (e.g., Kincaid et al, 2020;Schmitt et al, 2017). To our knowledge, studies examining language change as a predictor of other longitudinal outcomes are very limited; we are aware of a few studies examining this within the area of socioemotional development (e.g., Petersen & LeBeau, 2021) and two studies that used latent change scores (LCSs) to examine bidirectional associations between change in vocabulary and change in reading comprehension in samples of elementary school students (Quinn et al, 2015(Quinn et al, , 2020.…”