Suggestion of directions to solve the problem that each economic unit faces based on econometric model-based analysis : Utilizing family members' media use data, an enterprise's product sales data, and countries' energy use data

Abstract

This dissertation defines the problem that each economic unit like family, enterprise, and country faces and suggests the directions to solve them based on our econometric analysis. The dissertation is comprised of three papers. The first study analyzes the impact of how much time parents and their child spend together on the child’s mobile phone dependency. Its underlying mechanism includes a chain mediation of parental media use behavior and the child’s mentality such as self-esteem and need for cognition and the moderation effect of the number of children in the household. We suggest more practical guidelines to lower the child’s mobile phone dependency based on the results that describe which situations cause them. The second study analyzes the customers’ buying patterns utilizing product sales data of a multi-brand cosmetics retailer. We delve into the changes in buying patterns because of COVID-19, therefore, we suggest the way to predict the customers’ movements and prepare against them when an economic shock which can affect the consumption level occurs in the future. The last study examines the countries’ quarterly energy use with the effects of global efforts to stop global warming: carbon tax adoption and carbon net-zero legislation. The various socioeconomic characteristics of countries, whether countries operate nuclear power plants or not, and price of energy sources are all included.