What do central bankers talk about when they talk about inflation? The rise and fall of inflation narratives

The 2021 debate over the causes of inflation was dominated by contrasting narratives around the drivers of, and solutions to, rising prices. But how these ideas did or did not penetrate central banks, the politically independent institutions responsible for keeping prices stable, remains unclear. In this paper we investigate how the Bank of England, European Central Bank, and Federal Reserve discussed and deployed specific inflation narratives over time in their attempts to diagnose and treat the inflation of the period. We focus on four narratives that identify the main drivers of inflation in (1) excessive public spending, (2) higher wages in the labour market than warranted by productivity, (3) supply side disruptions to critical markets such as energy, and (4) corporate profit margin expansion. We use a large language model to tag central banks’ speeches with relevant narratives at sentence level, which allows us to quantify how much each central bank discussed each narrative. The results shed new light on how these three central banks interfaced with the recent debate around inflation.