Extremely high priority
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Cost$8.99
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ImpactHigh
24Nice to haveEvidence: solid
Know your Big Five
The one personality test that predicts real outcomes — use it to route around your weak traits, not to feel seen.
Priority Matrix
The numbers.
Four dimensions, scored 1–6, where six is always the good end: cheapest, quickest, easiest, highest impact. Priority is Impact squared, divided by what it costs you in energy, money and time.
CostFree (IPIP)
Time15 min, once
EnergyJust a questionnaire
ImpactLow on its own
How sure we are
SolidGood trials pointing the same way.
Kept separate from the priority score on purpose: confidence in the evidence never raises how worth-it something is.
What we read
- Do conscientious individuals live longer? A quantitative review
Health Psychology · 2008
Across 20 studies of about 8,900 people, more conscientious people lived longer — but the correlation was modest (r = .11, roughly 2-4 extra years for the highly conscientious).
- The Power of Personality: The Comparative Validity of Personality Traits, Socioeconomic Status, and Cognitive Ability for Predicting Important Life Outcomes
Perspectives on Psychological Science · 2007
Across decades of longitudinal cohorts, Big Five traits predicted mortality, divorce, and occupational success about as well as socioeconomic status and IQ did.
- Conscientiousness and health-related behaviors: a meta-analysis of the leading behavioral contributors to mortality
Psychological Bulletin · 2004
A synthesis of 194 studies found conscientiousness tracked every major mortality-linked behavior — less smoking, drug use, excessive drinking, and risky driving — with mostly small-to-moderate correlations (r ≈ .05-.28).
- How Replicable Are Links Between Personality Traits and Consequential Life Outcomes? The Life Outcomes of Personality Replication Project
Psychological Science · 2019
Preregistered replications (median N = 1,504) confirmed 87% of 78 published trait-outcome links, though the effects came back at about 77% of their original size.
Research from University of California, Riverside · University of Illinois Urbana-Champaign · Oregon Research Institute · Colby College. We cite their published work. They have no involvement with Anew.
Where this falls down
Knowing is not changing: filling out a questionnaire moves zero biomarkers, and no trial shows Big Five feedback alone improves health. The trait-outcome correlations are real but modest (conscientiousness-longevity r = .11), and preregistered replications shrink published personality effects by about a quarter.
The value is routing: if you score low on conscientiousness, automate (transfers, refills, calendar defaults) instead of betting on willpower; if you score high on neuroticism, weight the sleep and light cards harder.
Use a free IPIP-based inventory — anything that sorts you into 16 types (MBTI) has no predictive validity and would sit on our overhyped shelf.
Topics
Where it fits.
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