Why to Take only US or China return series to check mean and volatility spillover when the subject is trade war?
When i was working for the 3rd objective, i spent much time thinking why on earth i am not using the trade war composite variable that i created, instead my supervisor corrected me to use return series for this purpose. Then i went back to review literature to solve this confusion that I had in my mind. when i consulted the literature, i knew that this combination and the subject which I am studying and the innovation i am proposing is surely not available in the literature. so, I had to make analogies and I have to see if any other researcher previously for any other event had done this in the past. To my surprise, I find some studies. for instance, a study "Modelling volatility spillover effects between developed markets and Asian emerging stock markets by Yanan LI and David E Giles (2014) studied the mean and volatility spillover between the markets during the Asian Financial crisis and from 1993 to 2012. it gave me confidence.