levenscyclushypothese

The levenscyclushypothese, or life-cycle hypothesis, is an economic theory that describes the relationship between an individual's income, consumption, and age. Proposed by Franco Modigliani, Richard Brumberg, and Albert Ando, it suggests that individuals plan their consumption and savings over their entire lifetime, rather than making decisions based solely on their current income.

According to the hypothesis, people aim to smooth their consumption over their lives. This means they tend to consume more during their working years and save during their early and later years. In youth, income is typically lower, so people may borrow or save little. During prime working years, income rises, leading to increased savings to fund future retirement. In retirement, when income is generally lower, individuals draw down their accumulated savings to maintain their desired level of consumption.

The core idea is that individuals consider their total expected lifetime resources when deciding how much to spend each year. This implies that changes in current income may have a less pronounced effect on consumption than if people only considered their present earnings. Factors such as expected future income, age, and inheritance play crucial roles in shaping an individual's consumption and saving patterns throughout their life. The hypothesis has significant implications for understanding aggregate consumption, saving behavior, and the impact of fiscal policies.