というNBER論文が上がっている(1年前のWP)。原題は「The Effect of Inflation Uncertainty on Household Expectations and Spending」で、著者はOlena Kostyshyna(カナダ銀)、Luba Petersen(サイモン・フレーザー大)。
以下はその要旨。
We use a new Canadian household survey to examine how inflation uncertainty influences inflation expectations and spending. Through randomized information interventions, we provide inflation statistics with or without second moments, creating variations in households' inflation uncertainty. All information types effectively lower inflation expectations and uncertainty. While communicating inflation uncertainty does not affect expectations or uncertainty levels, it increases the probability assigned to expected inflation near communicated ranges. Using Nielsen IQ Homescanner data, we find that higher inflation expectations and uncertainty reduce household spending on goods. Communicating inflation statistics with ranges increases spending by lowering expectations and reducing uncertainty.
(拙訳)
我々は、新たなカナダの家計調査を用いて、インフレの不確実性がどのようにインフレ予想と支出に影響するかを調べた。ランダム化された情報介入により我々は、二次モーメントのある、もしくは無いインフレ統計を提示し、家計のインフレの不確実性にバラツキを作り出した。すべての情報のタイプがインフレ予想と不確実性を事実上低めた。インフレの不確実性についてのコミュニケーションは予想や不確実性のレベルに影響しないが、コミュニケートされた範囲近傍の予想インフレに割り当てられる確率を高める。ニールセンIQホームスキャナーデータ*1を用いて我々は、高いインフレ予想と不確実性は家計の財支出を減らすことを見い出した。範囲を持つインフレ統計をコミュニケートすると、予想を低め不確実性を減らすことにより支出を増やす。
WPによれば、インフレの情報介入は以下の7つのタイプの質問を通じて行われたとの由(いずれも回答はYes/Noの二択)。
- T1- Past inflation
- On average during the last year, January 2019 to January 2020, yearly inflation in Canada was 1.9%. Did you know this?
- T2- BankTarget
- The Bank of Canada’s inflation target is 2%. Did you know this?
- T3- BankTargetRange
- The Bank of Canada’s inflation target is 2% with a range between 1% and 3%. Did you know this?
- T4- BankForecast
- According to the Bank of Canada, inflation is forecasted to be around 2% over the next year. Did you know this?
- T5- BankForecastCI
- According to the Bank of Canada, inflation is forecasted to be around 2% over the next year with a 90% chance of being between 1.4 and 2.6%. Did you know this?
- T6- ProfForecast
- According to Canadian professional forecasters, inflation is forecasted to be 1.7% over the next year. Did you know this?
- T7- ProfForecastRange
- According to Canadian professional forecasters, inflation is forecasted to be 1.7% over the next year, with forecasts ranging from 1.2% to 2.1%. Did you know this?
兎にも角にも予想インフレの水準と不確実性に関する情報をコミュニケートしてインフレ予想の管理の上で損になることは無い、というのがこの論文の一つの大きなメッセージのようである。