Few studies have analysed derivation in languages other
than English, including Croatian. This study shows that by the age of three
years, Croatian children already use a high number of derived words,
especially prefixed verbs. Both the number of acquired affixes and
proportion of derived words increase with age. Verbs are mainly prefixed and
nouns suffixed. The most prevalent semantic categories in nouns are objects
and instruments, and derivation in verbs marks differences in aspect and/or
Aktionsart. Later child speech shows productive usage
of derivation, including derivational pairs and mini-paradigms, neologisms
and neosemantism. The frequency of derived words in child-directed speech
influences their frequency in child language. Compared to children, adults
employ a broader repertoire of derivational patterns.