“…Regarding mood, we would like to note that we measured it by observing positive mood signals such as smiling or laughing, children' verbal expressions of happiness, their weekly level of excitement or energy, their interest in the content being taught, etc. Table 5 includes a definition of all behavioral parameters used in this study, which have been also used in related research works (Boot, Kramer, Simons, Fabiani, & Gratton, 2008;Campigotto, McEwen, & Demmans Epp, 2013;Dobrowolski, Hanusz, Sobczyk, Skorko, & Wiatrow, 2015; Fern andez-L opez, Rodríguez-F ortiz, Rodríguez-Almendros, & Martínez-Segura, 2013; Helms & Sawtelle, 2007;Karal, Kokoç, & Ayyildiz, 2010;Martinovic, Burgess, Pomerleau, & Marin, 2015;Nouchi et al, 2013). Perceptual and cognitive observations, i.e., attention, memory, reasoning, easiness to handle the program, and intuition were included because engagement with music plays a major role in developing perceptual processing systems that facilitate the encoding and identification of speech sounds and patterns (Azizinezhad, Hashemi, & Darvishi, 2013), thus being used in other works from the related literature as mentioned above.…”