| Summary: | Articles pose a particular challenge to second-language learners whose first language does not have them. Variability in article production in these learners is often explained in terms of first-language influence, but there are also suggestions that frequency-biased regularities in the target language itself might play a role. While most second-language research on articles has focused on English, a language with a relatively simple article system, the present study explores first-language influence and input-frequency effects by focusing on Swedish. Swedish expresses definiteness using a complex noun-phrase structure including several free-standing and bound morphemes, some relatively frequent in input, others less frequent. An oral-production task elicited adjectivally modified and non-modified noun phrases in indefinite and definite contexts from 23 foreign-language learners of Swedish who were native speakers of Russian, an inflectional language without articles. The analysis revealed that the learners were more likely to supply high-frequency morphemes than low-frequency ones. Furthermore, while the learners were equally likely to supply bound and free-standing morphemes, only their suppliance of free-standing morphemes was negatively affected by adjectival modification; their suppliance of bound morphemes was not. While the role of cross-linguistic influence should not be neglected, these findings suggest that probabilistic regularities in the linguistic input are a key factor in second-language acquisition of functional morphology.
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