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Effects of Specific Language Impairment (SLI) are often visible in the inflectional system. This also holds for Dutch, where verbal and adjectival inflection are vulnerable in children with SLI. A set of experiments shows that Dutch children with SLI make the same type of overgeneralizations as typically developing children make (and that their mistakes differ from adults acquiring Dutch as a second language). On the other hand, it is shown that SLI is more than just a delay. A comparison of a group of younger and older children with SLI suggests that some effects on inflection are long-lasting. It is argued that the evidence can best be understood if it is assumed that SLI is a result of problems in the processing and interpretation of the input. The same problems may also disturb the production of inflection once the relevant rules have been acquired. [ABSTRACT FROM AUTHOR]