The study looked at how inflation affects the variability of prices over time. They used data from the past 50 years and found that inflation doesn't have a consistent impact on price changes. Prices can become more variable during both high inflation and low inflation periods. The relationship between inflation and price variability is not straightforward and can change depending on the situation. The results support the idea that businesses face costs when changing prices, but don't provide evidence for another theory about how businesses adjust prices.