Inflation Expectations of the Inattentive General Public
Stellenbosch Working Paper Series No. WP08/2012Publication date: 2012
Author(s):
The majority of academic research on central bank communication has analysed a central bank’s audience as a single group. Analyses, especially empirical research, have focused almost exclusively on a central bank’s interaction with the financial markets, facilitated by the availability of high-quality, high-frequency asset price data. In practice, a central bank’s audience is heterogeneous, and recognising this is advantageous for both modelling purposes and effective central bank communication. Many central banks use a range of communication tools to reach their various audiences, but little formal analysis has been conducted to guide policy design and communication strategies. Gathering and processing information are costly for the general public, so they make rational decisions that limit the time and resources they allocate to these tasks. As a result, aggregate inflation expectations of the public as a whole can be described as ‘sticky’ in that the spread of information about inflation expectations through the economy is not instantaneous. A body of literature has emerged over the past decade, led by Mankiw and Reis (2001), who developed the Sticky Information Phillips Curve (SIPC), and Carroll (2002, 2003), who proposed microfoundations for the SIPC. This paper follows Carroll (2002, 2003) in adopting epidemiological models to provide insight into how the general public in South Africa forms its inflation expectations. This enables an estimation of the speed at which the South African general public updates its inflation expectations (information stickiness). Agent-based models, which explain the complex aggregate inflation expectations of the general public from the agent level upwards, are then used to verify these estimates of information stickiness and explore the microfoundations of aggregate inflation expectations.
JEL Classification:D82, D83, E31, E52, E58
Keywords:South Africa, sticky information, inflation expectations, inattentive general public
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Upcoming Seminars
Monday 21 July 202512:00-13:00
Izak Odendaal: Old Mutual Wealth Chief Investment Strategist
Topic: "Diverging fiscal policies and what it means for markets"
12:00-13:00
Dr Neil Rankin: Ceo Of Predictive Insights & Stellenbosch University
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Prof Willem Boshoff: Stellenbosch University
Topic: "Two competing approaches in South African competition policy: merger control and anti-cartel enforcement over the past 30 years"
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27 Jun 2025 Another setback for the GNU, but oil markets breathe a little easierThis week was marked by heightened tensions both domestically and internationally. At home, friction intensified between the two largest parties in the Government of National Unity (GNU), the ANC and the DA, following the firing of one of the DA's deputy ministers. Internationally, the US conducted airstrikes on three Iranian nuclear facilities using...
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