Primary progressive aphasia (PPA) is a clinical syndrome, characterized by a gradual but progressive deterioration of speech and language function. There are three main accepted variants: (1) non-fluent/agrammatic, (2) semantic and (3) logopenic variant. Until now, differentiation of these variants remains challenging, especially for non-fluent vs logopenic. However, it is of great importance for prognosis and treatment. Recent evidence suggests the usefulness of linguistic analysis of semi-spontaneous language production in the diagnostic process of the disease. However, the vast majority of the literature on semi-spontaneous language production in PPA is based on English speakers. This bias in the literature is detrimental to our understanding of this topic, especially given that English is relatively poor in terms of morphosyntax. Furthermore, standardized naming tests are commonly used in the diagnostic process of PPA. However, the relationship between the performance on standardized naming tests and ...