Disposable income
currency / year
Flow of resources after tax. Buys time, health inputs, and mating-market position.
Income is the master confounder of this atlas. It buys supplements, gym time, sleep, outdoor leisure, private medicine, and dating-app filters. Any observational arrow from a purchasable input to 'success' must first survive income.
Also called earnings, wage.
Incident edges
Observational · Moderate
Disposable income→Youth / fertility preference in partners
Richer men can act on a preference that poorer men also often hold. Money changes the feasible set, not necessarily the utility function.
Observational · Moderate
Disposable income→Income hypergamy preference
As the income gap closes, strict economic hypergamy yields to educational and cultural homogamy. Incentives, not a frozen instinct.
Observational · High confidence
25-hydroxyvitamin D↔Disposable income
People with money and outdoor lives have higher 25(OH)D. That is not D causing the money.
Observational · High confidence
Disposable income→Vitamin / mineral supplementation
Money buys bottles. Reverse causation is the whole trick of the wellness-to-wealth genre.
Observational · Moderate
Disposable income↔Economic risk tolerance
Holt–Laury measures the preference. Income changes the budget. Do not call either 'testosterone'.
Cases
Sources
- D. M. Buss et al. (1989). Sex differences in human mate preferences: Evolutionary hypotheses tested in 37 cultures
- R. Fisman et al. (2006). Gender differences in mate selection: Evidence from a speed dating experiment
- P. Autier et al. (2014). Vitamin D status and ill health: a systematic review
- J. E. Manson et al. (2019). Vitamin D supplements and prevention of cancer and cardiovascular disease
- W. H. Shrank et al. (2011). Healthy user and related biases in observational studies of preventive interventions: a primer for physicians
- C. A. Holt et al. (2002). Risk aversion and incentive effects