Assessing informativeness in Spanish-speaking individuals with primary progressive aphasia

Background Primary progressive aphasia (PPA) is a neurodegenerative disorder associated with atrophy of the frontotemporal region. It is primarily characterized by language impairments that become accentuated over time, often leading to isolation and social exclusion. There are three main subtypes, the semantic (svPPA), non-fluent (nfvPPA), and logopenic (lvPPA) variants, each presenting distinct language deficits, as captured by standard assessment batteries. However, such assessments often fail to adequately identify functional communication (dis)abilities in everyday life, which is crucial for effective diagnosis and treatment. One understudied aspect of communication is informativeness, the conveyance of an appropriate amount of information in an efficient fashion.