Miniature language system acquisition by children with different learning proficiencies.

Sixteen children, aged 7:8 to 9:10, learned two miniature languages while playing a communication game. Both languages expressed Action (Agent, Patient) meanings and incorporated a Patient suffix. They differed in word order: VSO (Language I) versus SOV (Language II). Children found the SOV language easier; they also made more suffix errors and fewer word order errors in this language. The results suggest that the perceptual salience of an utterance-final particle may hinder grammatical analysis, at least if capacity limits and perseverative learning strategies intervene.