The HEXACO Calendar Audit

• Personality tests written by accountants are not a science. Here is what is.· The Myers-Briggs Type Indicator was written by a mother and a daughter, neither of whom was a trained psychologist, in the 1940s. The personality science you actually want has six dimensions, includes an honesty axis, and has thirty years of peer review behind it.
• $199 for the marketing, $5 for the science.· MyHeritage shows you 23 ancestral fragments. The raw file underneath has 700,000 markers. Here is how to read the rest of your own DNA in ten minutes for the price of a sandwich.
• The Bias Mirror· Use AI as critic, not cheerleader. Friston's price for honesty.

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INPUT: 90 days of ICS calendar export
OUTPUT (excerpt):

Honesty-Humility       2.8 / 5.0   (- significant gap from self-report 4.2)
Emotionality            3.1 / 5.0   (= matches self-report)
eXtraversion            4.6 / 5.0   (+ above self-report 3.8)
Agreeableness           3.4 / 5.0   (- below self-report 4.5)
Conscientiousness       3.0 / 5.0   (- below self-report 4.8)
Openness                4.3 / 5.0   (= matches self-report)

LARGEST GAP: Conscientiousness.
Your calendar shows 41% reactive meetings booked <24h notice.
You scored yourself "very high" on planning. Pick one.

• HEXACO 6-factor model
• Big Five vs HEXACO distinctions (the Honesty-Humility axis)
• BLS American Time Use Survey methodology
• ICS calendar export format
• embedding-similarity classification
• the introspection illusion (Pronin)
• base-rate neglect when scoring yourself

If a name is unfamiliar, that's the gap. The list is the curriculum.

1. 01

   Export 90 days of calendar to ICS. Strip names; keep titles, durations, and event types.

   bash
   curl -o cal.ics 'https://calendar.google.com/calendar/ical/.../basic.ics'

2. 02

   Classify each event into a behavioural category (focus block, reactive meeting, deep work, social, admin, exercise).

3. 03

   Score each category against each HEXACO factor on a tagged rubric. Use Claude with embeddings, not vibes.

4. 04

   Take the HEXACO self-report inventory once (60 items, ~12 minutes).

5. 05

   Compute the per-factor gap between calendar score and self-report score.

6. 06

   Investigate the largest gap. That is the lie you tell yourself about yourself.

7. 07

   Re-run quarterly. The gap moves only if you do.

Self-report personality inventories suffer the introspection illusion: you score yourself on the trait you wish you had. Calendars are honest because they were written for logistics, not identity. Mapping calendar behaviour to HEXACO factors creates a behavioural mirror with the same axes as the self-report. Where they diverge, the calendar wins. The gap is the most actionable data you own.

• The Bias Mirror↗
  Use AI as critic, not cheerleader. Friston's price for honesty.