“…Research projects vary with respect to scope and method, and main findings concerning the effects of technological affordances on central aspects of reading are still to a considerable extent inconsistent. Some studies (Jeong, 2012;Kim & Kim, 2013;Mangen, Walgermo, & Brønnick, 2013;Stoop, Kreutzer, & Kircz, 2013a,b;Wästlund, 2007;Wästlund, Reinikka, Norlander, & Archer, 2005) find reading on screen to be inferior to reading on paper with respect to cognitive outcomes (e.g., reading comprehension). Other studies have found that there are no or only minor cognitive differences, and that the main differences are on a metacognitive level (Ackerman & Goldsmith, 2011) or pertain to subjective experience and evaluations rather than objective outcomes (Grzeschik, Kruppa, Marti, & Donner, 2011;Kretzschmar et al, 2013).…”