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.
Connected relationships
Observational · High confidence
Disposable income→Vitamin / mineral supplementation
Higher Disposable income increases Vitamin / mineral supplementation.
Money buys bottles. Reverse causation is the whole trick of the wellness-to-wealth genre.
Observational · Moderate
Disposable income→Income hypergamy preference
A rise in Disposable income does not identify a change in Income hypergamy preference.
As the income gap closes, strict economic hypergamy yields to educational and cultural homogamy. Incentives, not a frozen instinct.
Observational · Moderate
Disposable income↔Economic risk tolerance
Higher Disposable income moves Economic risk tolerance only in some conditions. Read the mechanism.
Holt–Laury measures the preference. Income changes the budget. Do not call either 'testosterone'.
Observational · Moderate
Disposable income→Youth / fertility preference in partners
A rise in Disposable income does not identify a change in 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 · High confidence
25-hydroxyvitamin D↔Disposable income
A rise in 25-hydroxyvitamin D does not identify a change in Disposable income.
People with money and outdoor lives have higher 25(OH)D. That is not D causing the money.
Cases
Sources
- W. H. Shrank et al. (2011). Healthy user and related biases in observational studies of preventive interventions: a primer for physicians
- R. Fisman et al. (2006). Gender differences in mate selection: Evidence from a speed dating experiment
- D. M. Buss et al. (1989). Sex differences in human mate preferences: Evolutionary hypotheses tested in 37 cultures
- C. A. Holt et al. (2002). Risk aversion and incentive effects
- 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