“…For a study to be included as experimental, no matter if it was a between-or within-subjects experiment, there had to be a comparison condition between children's interactive reading apps and paper books or basic e-books (no dynamic effects). The children were narrated by their parents when reading the paper books, whereas during the experiment, the adults acted as guides when using an interactive reading app, minimizing the interaction with the children (e.g., Bus et al, 2019;Korat et al, 2019), imitating a natural reading session. We focus on the effects of the app on children's emergent literacy (learning outcomes and behaviors) such as story comprehension, recall and retention, vocabulary, motivation, attention, engagement, and so forth-all skills that are directly related to later learning outcomes in school (e.g., Whitehurst & Lonigan, 1998), as well as the effectiveness of the multimedia features and interactive functions placed in the app.…”