Adjectives, like nouns and verbs, are one of the three major classes of lexical words. But, unlike nouns and verbs, they emerge late in acquisition. In Catalan, as in many other languages, their use is closely linked to the literate lexicon learned at school-age. Thus, the use of adjectives can be a good indicator of later language development.…

Comparison of oral and written language samples collected from young and elderly adults revealed an age-related decrease in language complexity. Better-educated subjects had higher vocabulary test scores and produced longer utterances. Subjects with greater memory capacity produced more complex utterances and used more right- and left-branching…