“…The inclusion criteria were based on the purposes of this meta-analysis as well as for clarity of causal inference (examples of excluded studies based on each criteria are after each criteria): (1) there was a measure of performance (memory and/or comprehension) of the texts (Buchweitz et al, 2014); (2) sufficient statistics for the meta-analysis were available either in the report or were available when requested from the author (such information could not be determined from Fletcher and Pumfrey, 1988); (3) there was at least one condition in which participants were silently reading the text and at least one other condition in which participants were only listening to the text (e.g., Verlaan & Ortlieb, 2012, was excluded because it compared reading-while-listening to reading-only and did not have a listening-only condition); (4) the texts were the same in the reading and listening conditions (e.g., Wolf et al, 2019, was excluded due to different materials for reading and listening); (5) there was random assignment for between-subjects designs and counterbalancing for within-subjects designs (Stanton, 1934); (6) the materials did not include visual representations as multimedia materials are processed differently than only verbal information (Mayer, 2009; see also, e.g., Crooks et al, 2012, because diagrams were in the materials); (7) the verbal materials in the experiments needed to be longer than one sentence due to differences between processing single sentences compared with discourse (e.g., Krull & Humes, 2016, was excluded because it compared reading and listening of single sentences while measuring brain activation); and (8) experimental procedures occurred under researcher supervision to ensure consistent environments between reading and listening conditions (e.g., Daniel & Woody, 2010, was excluded because participants read or listened to the materials on their own time as part of a course assignment). In addition, studies that focused on participants’ development of nonnative language skills were excluded because of confounds with second languages (Mecartty, 2001; Melby-Lervåg & Lervåg, 2014, for details on differences in first and second language comprehension). Also excluded were studies that focused on individuals with disabilities to avoid confounds (Hale et al, 2005).…”