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Words of the RBNZ: Textual analysis of Monetary Policy Statements

This analytical note provides a textual analysis of 100 Monetary Policy Statements between 1997 and 2021.

Rennae Cherry and Eric Tong

Words of the RBNZ: Textual analysis of Monetary Policy Statements
Words of the RBNZ: Textual analysis of Monetary Policy Statements

This analytical note provides a textual analysis of 100 Monetary Policy Statements between 1997 and 2021.

Key findings

  • Textual analysis shows that keywords mentioned in the Monetary Policy Statements (MPS) align with the objectives in the Remit.
  • The tone of MPS has been neutral and objective, even as the sentiment in the MPS moves in tandem with household and business confidence surveys.
  • Similar to monetary policy documents published by central banks overseas, the MPS are complex and may not be accessible to the general public. However, readability, which measures the complexity of a text based on sentence length and the number of syllables in words, has remained stable over 1997 Q1 to 2021 Q4 and has marginally improved recently.
  • The Monetary Policy Snapshots, introduced in 2018, are easier to read than the main part of the MPS – they are accessible to a high school graduate rather than a university graduate.
Read the 2023 Monetary Policy Committee Remit, (PDF 84.5KB)

Why we did this research

Clear communication helps New Zealanders understand monetary policy and its relationship to them. Communication explains to the public the purpose and rationale behind monetary policy decisions and, when done right, may enhance monetary policy transmission via different channels. With this motivation, we apply textual analysis to flagship publications of the Reserve Bank — with the aim of assessing Reserve Bank communications and supporting its mandates of maintaining price stability over the medium term and supporting maximum sustainable employment.

The Reserve Bank reaches out to a broad spectrum of New Zealanders through different channels. These include monetary policy announcements, press conferences, business visits, testimonies to the Parliament, Governor’s speeches to the public, online platforms, and laying out monetary policy actions and the reasoning behind them in the quarterly Monetary Policy Statements (MPS). These statements aim to ‘educate and advise economic analysts and others who are providing advice to traders in the financial market on recent developments and expectations for future economic developments’. To determine whether the MPS are fit for purpose, we apply textual analysis to the MPS.