The chapter introduces the material used for the study, that is, the Old Bailey Corpus (OBC) as well as the Old Bailey Online resource and the Proceedings that the OBC has been based on. The analytical frameworks adopted are also discussed, comprising the corpuslinguistic approach, and the historical sociopragmatics, the language variation and change, and the grammaticalization and pragmatic-semantic change frameworks. Attention is also paid to the late modern courtroom and to the issues of relevance to the study of past spoken interaction based on written records.

In Chapter 6, I argue that the terms ‘mental health’ and ‘mental illness’ have been used interchangeably in the previous literature on the representation of mental illness in the press. Specifically, I argue that using these two terms interchangeably (especially during data collection) may result in incomparable datasets. Through linguistic analysis, I show that the terms ‘mental illness’ and ‘mental health’ are distinct terms, and that the meaning of the two terms has shifted over the time period covered by the MI 1984–2014 Corpus. I argue that the lexical change I observed is consistent with pragmatic accounts of language change in which the language development is in part a result of euphemism (e.g. Traugott & Dasher, 2002).