The study looked at whether the relationship between inflation and the economy's performance has changed over time. They used a specific economic model to analyze data from Peru between 2002 and 2019. The researchers found that the relationship between inflation and the economy has stayed consistent during both the Inflation-Targeting regime and the post-crisis period. Additionally, they discovered that people's expectations about inflation have become more important after the crisis, suggesting that inflation is less predictable now. The results also show that inflation behaves similarly in the long term across different time periods.