Individual differences in the decline of the Deontic nci construction

This paper addresses the question of the (speaker-level) ‘cognitive how’ of (language-level) constructional attrition, defined as a systemic decrease in the occurrence of a construction in the history of a language. Presenting and analysing data from an historical idiolectal corpus on the frequency development in individual speakers’ use of a partially schematic construction instantiated by such types as be obliged to and be permitted to , it offers a first attempt to measure whether a general decline in the frequency of this construction can also be observed to be an internal development during a speaker’s lifespan. The results confirm this to be the case in a sizeable group of speakers and the paper provides an initial insight into how this may contribute to a genuinely cognitive account of the speaker-external development.