新西兰联储：一项新研究表明，人口老龄化可能降低长期中性利率。

Group 1 - The core viewpoint of the article is that a new study by the New Zealand Reserve Bank indicates that population aging may lead to a decrease in the long-term neutral interest rate [1] Group 2 - The research suggests that as the population ages, the demand for savings increases, which could exert downward pressure on interest rates [1] - The findings highlight the potential implications for monetary policy and economic growth in New Zealand [1] - The study emphasizes the importance of considering demographic trends when assessing future interest rate levels [1]