“…Comprehension–production asymmetries have also been found for other areas of language acquisition, such as the production and comprehension of the German particle auch ‘also’ (Höhle, Berger, Müller, Schmitz, & Weissenborn, 2009; Hüttner, Drenhaus, Van de Vijver, & Weissenborn, 2004; Müller, Höhle, Schmitz, & Weissenborn, 2009) and pronouns in English, Dutch, French and German (Hendriks & Spenader, 2006 for English; Weissenborn, Kail, & Friederici, 1990 for Dutch, French and German). This raises important issues about the origin of such asymmetries.…”