“…Previous studies on native perception have typically addressed vowel reduction from the following angles: segmental context ( Mitterer and Ernestus, 2006 ; Mitterer et al, 2008 ; Zimmerer and Reetz, 2014 ), word context (e.g., Van De Ven et al, 2011 ), word probability ( van de Ven et al, 2012 ), speech rate ( Dilley and Pitt, 2010 ), phonotactics ( Spinelli and Gros-Balthazard, 2007 ), and syntax (e.g., Viebahn et al, 2015 ). As for the perception of vowel reduction by non-native listeners, the variables were as follows: high proficiency learners ( Nouveau, 2012 ; ten Bosch et al, 2016 ; Wong et al, 2017 ), phonotactics ( Shockey and Ćavar, 2013 ; Ernestus et al, 2017 ), speech styles ( Smiljanic and Bradlow, 2011 ), voice onset time ( Sumner, 2011 ), vowel formants and duration ( Van Dommelen and Hazan, 2012 ), frequency of occurrence and exposure to a word ( Brand and Ernestus, 2018 ), and word exemplars effects ( Morano et al, 2019 ). Regarding the non-native perception of consonantal reduction, the following factors have been considered so far: the proficiency level of learners ( Pearman, 2004 ), linguistic typological differences ( Shockey and Bond, 2012 ; Shockey and Ćavar, 2013 ), and a stay abroad in an English-speaking country ( Shockey and Bond, 2012 ).…”