CAJ | 학술논문

居民消费与政府消费是否存在一个明确的函数关系，现有的研究无法给出清晰的答案，原因在于微观效用函数存在争议。作为一个新的、可定量计算的效用理论，比例效用理论在风险决策机制、居民效用测算、新最优所得税模型方面均显示出明显的优势。基于比例效用理论能够建立一个新的、可计算的宏观消费投资恒等式模型，并且通过比较静态分析推导出新的居民消费与政府消费理论模型和新的居民消费与投资理论模型。实证检验显示，宏观消费投资模型成立，1992年至2011年问中国的政府消费对居民消费存在明显挤出效应，平均边际挤出效应为0．48，投资对居民消费存在明显挤入效应，平均边际挤入效应为1．42。
거민소비여정부소비시부존재일개명학적함수관계，현유적연구무법급출청석적답안，원인재우미관효용함수존재쟁의。작위일개신적、가정량계산적효용이론，비례효용이론재풍험결책궤제、거민효용측산、신최우소득세모형방면균현시출명현적우세。기우비례효용이론능구건립일개신적、가계산적굉관소비투자항등식모형，병차통과비교정태분석추도출신적거민소비여정부소비이론모형화신적거민소비여투자이론모형。실증검험현시，굉관소비투자모형성립，1992년지2011년문중국적정부소비대거민소비존재명현제출효응，평균변제제출효응위0．48，투자대거민소비존재명현제입효응，평균변제제입효응위1．42。
It is ambiguous of the relationship between consumer consumption and government expenditure for the diversification of utility function. Ratio utility theory has advantages obviously in risk decision, estimation of consumer utility and optimal income taxation. This paper deduces an identity about consumption and investment based on ratio utility theory, and presents a new relationship between consumer consumption and government expenditure as well as a new relationship between consumer consumption and investment with comparative static analysis. Through verifying the identity empirically by system model, it is demonstrate that crowding out effect by government expenditure to consumer consumption existed during 1992 to 2011, average marginal crowding out effect is up to 0. 48. At the same time, crowding in effect existed by investment to consumption, average marginal effect is up to 1.42.