transitory income

…In the midst of this debate, M. Friedman proposed the permanent income hypothesis. Friedman divided the actually observed income (measured income) into permanent income and transitory income, and attempted to explain fluctuations in the savings rate by dividing it into the long-term trend portion that depends on the former permanent income and the short-term fluctuation portion that depends on the latter transitory income. In this way, permanent income means a certain portion of income that does not fluctuate in the short term, but in reality, it is often difficult to empirically grasp its theoretical counterpart. …

*Some explanations of terms that refer to "transitory income" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…その論争のなかでM.フリードマンは，恒常所得仮説permanent income hypothesisを提唱した。フリードマンは，実際に観測される所得measured incomeを恒常的所得部分permanent incomeと変動的所得部分transitory incomeに分けたうえで，貯蓄率の変動を前者の恒常所得に依存する長期的趨勢分と後者の変動所得に依存する短期的変動分とに分けて説明しようと試みる。このように恒常所得とは，短期的に変動しない確実な所得部分を意味するが，実際にその理論的対応物を実証的にとらえようとすると困難な場合が多い。…

※「transitory income」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報