The Consumer Sentiment Index is higher than previous periods. At the same time, firms welcome favorable news on the path of the U.S. economy. 2022. Lizzette Arroyo. All rights reserved. No permissions granted. Real interest rate *1 S,I. The savings function [Select] The investment function [Select] Savings 2022. Lizzette Arroyo. All rights reserved. No permissions granted. The real interest rate [Select] Investment Savings The level of savings and investment (S,I) [Select ]