Fig. 3: Differences in comprehension between language phenotypes.

Individuals with the syntactic phenotype interpret the sentence “the cat carries the sheep” by recalling the cat, the sheep, and juxtaposing the two objects using the prefrontal synthesis (PFS) mechanism. In contrast, individuals with the command and modifier phenotypes do not acquire the PFS mechanism, preventing them from understanding the relational aspect of sentences—specifically, ‘who carries whom’.