Measure of Aggregate Trade Restrictions (MATR)
By Alphacast
MATR is an empirical measure of how restrictive official government policy is towards the international flow of goods and services. MATR is simple, ad hoc, plausible, quantitative, easily updated, based solely on policy-relevant measures of trade policy, and covers an unbalanced sample of about 157 countries annually between 1949 and 2020. MATR is also strongly correlated with existing measures of openness and trade policy but more comprehensive than existing measures. We use MATR to show that trade restrictions are harmful for the economy and lead to significant contractions in output.