[…] many features of BL represent simplification or reductions of the target language and as such are similar in kind to the simplification found in first language acquisition, simplified registers, language loss, and elsewhere in language variation and in language change. Such ‘errors’ typically include omission of inflections and confusion among them, overgeneralization of morphological and syntactic patterns, preference for general and undifferentiated lexical items.
- Ferguson-DeBose (1977), a pag.108-109