ABSTRACT
This chapter shows that production errors found in the language of small children, children with SLI, L2 learners, and Broca's aphasics can be accounted. It summarizes the observations, and discusses that the description in terms of EPP seems to give an adequate account of the production problems noticed. The chapter looks at Swedish production data from early L1 Swedish, Swedish children with SLI, adult L2 Swedish, and Swedish Broca's aphasics, discussing what these production data reveal of these speakers' I-grammar. It presents the theoretical implementation, and provides a brief sketch of Swedish grammar. The chapter also presents a discussion of a number of utterances from the Swedish child Sara, showing what these utterances reveal about her knowledge of Swedish at that age. It argues that there is hardly any difference between the I-languages of normal speakers and the four groups of speakers with production problems that have been studied.
