가구유형별 소비지출 구조 변화와 소비문화 전환: 2000-2020년 렉시스 다이어그램 분석 = Structural Changes in Household-Type Consumption Expenditure and the Transformation of Consumer Culture: A Lexis Diagram Analysis, 2000-2020

다국어 초록 (Multilingual Abstract)

Based on data from the Household Income and Expenditure Survey spanning 2000 to 2020,this study employs a Lexis diagram to conduct a time-series analysis of changes in consumptionexpenditure structures by household type. Focusing on households with children, couple-onlyhouseholds, and single-person households, the analysis examines age-period-cohort effects toempirically identify how life-cycle stages and shifts in the social environment influence consumptionbehavior. The findings reveal that demographic transformations in Korean society, particularlydeclining fertility and population aging, have significantly shaped consumption patterns,highlighting distinct characteristics across household types. By elucidating these differences,the study provides valuable foundational insights for policy formulation and market strategydevelopment. Notably, the reduction in educational spending among households with children,the shift toward consumption for lifestyle stability among married-couple households and theincrease in housing and healthcare expenditures among single-person households reflect contemporarysocial trends and offer important implications for designing targeted welfare and economicpolicies. By analyzing the dynamic evolution of consumer culture in Korea, this research makesmeaningful contributions not only to academic discourse but also to the practical developmentof policy and industrial strategies. Future studies should pursue more multidimensional analysesincorporating diverse demographic factors, exogenous variables, and policy changes.