“…Bosma & Blom (2020) measured morphological development (the only study to do so) using a test in which children had to produce plural and past participle forms of test items. Of the studies that measured overall video exposure, one reported a positive effect of viewing on the number of interrogative forms used (Li et al, 2017), one reported a negative association between viewing and a sentence repetition test (Oryadi-Zanjani,et al, 2021), and four report null associations with syntactic or morphological measures (syntactic complexity : Selnow, 1978;Selnow & Bettinghaus, 1982; diversity of path verb types: Wu et al, 2022;morphology: Bosma & Blom, 2020). Both Selnow (1978) and Selnow and Bettinhaus (1982) also broke down viewing time into five genre categories and reported non-significant associations between viewing and syntax for all categories (note that this excludes cartoon viewing time in Selnow and Bettinghaus (1982) where a significant association is reported, but this is inconsistently presented as positive and negative in the text).…”