Pronouns are classified as functional grammatical morphemes because they lack descriptive lexical semantic content

What does the evidence say?

The claim states a standard linguistic definition regarding the closed-class/functional nature of pronouns versus open-class lexical items. None of the retrieved papers specifically test or dispute this foundational classification; instead, they focus on clinical, computational, or neuro-cognitive processing aspects of language (e.g., connected speech, ERPs, event-related potentials in sentence processing). Because this is a matter of definitional terminology and standard grammatical categorization rather than an empirical discovery currently undergoing scientific debate, it falls under common knowledge/linguistic definition.