Gaps and repairs at the phonology-morphology interface.

The paper discusses phonologically motivated gaps in inflectional paradigms. A model is offered in which the appearance of gaps is based on a tension between markedness constraints, faithfulness constraints, and constraints which require the expression of morphological categories. After presenting the model, additional implications are analyzed. Situations in which the same problem has different solutions in different morphological contexts are predicted insofar as constraints requiring the expression of different categories can vary in their ranking relative to some faithfulness constraint. Hence, the same phonotactic problem can yield a gap in one situation and a repair in another. This prediction is illustrated and further details of the prediction are explored, including the identification of a situation requiring a more restrictive version of the model. This is achieved by drawing on Smith's (2001) proposal that faithfulness constraints can be indexed to lexical categories to model this situation. [ABSTRACT FROM AUTHOR]