한국 국민 만족도의 변화가 한국 총 수출액과 총 수입액의 변화에 미치는 상호 영향력 변화에 관한 연구

Mutual Influence Among Life Satisfaction, Export Volume and Import Volume in Korea

This study is an empirical study on the mutual influence among life satisfaction, export volume and import volume in Korea. We examine the interdependence of Korea’s life satisfaction index, export volume and import volume index using 26 yearly data. The Granger causality model based on the vector autoregression model (VAR) and the Johansen cointegration test are employed. The impulse response function based on the VAR model as well as variance decomposition are conducted after the unit root tests, cointegration test and Granger causality test. Results from basic statistical analysis showed that Korea’s life satisfaction index, export volume index and import volume have unit roots. In addition, there is at least one cointegration among them. Lastly, we find that Korea’s life satisfaction index does not granger-causes Korea’s export volume and import volume.