DISTINCTIVE CHARACTERISTICS OF THE CAUSALITY BETWEEN THE PPI AND CPI: EVIDENCE FROM ROMANIA

作者：Khan, Khalid; Su, Chi-Wei; Moldovan, Nicoleta-Claudia; Xiong, De-Ping^*

来源：Economic Computation and Economic Cybernetics Studies and Research, 2017, 51(2): 103-123.

• Consumer Price Index
• Producer Price Index
• Rolling Window
• Time-varying Causality
• Bootstrap

This paper examines the causal relationship between the producer price index (PPI) and consumer price index (CPI) in Romania. The Granger full sample test shows unidirectional causality from PPI to CPI. The parameter stability test shows instability in the short run and the result is inappropriate for estimation due to the presence of structural changes. The Sub-sample rolling window test is used to address the time-varying, and it provides bi-directional causality at different sub-sample. The finding does not support the neoclassical profit-maximizing model, which states that PPI is not a single factor of fluctuation in CPI for Romania. It indicates the bidirectional relationship between the PPI and CPI, suggests that both these price indices play a significant role. The study implies policy-wise that PPI is a major factor in the price stability and should have been included in inflation targeting policy to curb the inflation in Romania.

• 出版日期2017
• 单位齐鲁工业大学; 中国海洋大学; 云南财经大学