
Seer — A Personality Type in the 16 CoreTypes System
Your type: how it works, where it's strong, where it's weak.
Curious how the world works, fond of talking ideas over, and keeping it light.
GrandmasterINTJBeaconESFJCatalystENTPHarmonistISFPThey prize strength and loyalty to their own; a big goal is worth the heat and risk.
FlamekeeperINFPWarlordESTPHeraldENFJSentinelISTJWork that pays, results that count, and a small circle they've trusted for years.
SeerINTPDukeESFPExecutorENTJCustodianISFJThese four nurture and protect what's built to last, without much fuss.
SageINFJOverseerESTJHarbingerENFPCraftsmanISTPCurious how the world works, fond of talking ideas over, and keeping it light.
They prize strength and loyalty to their own; a big goal is worth the heat and risk.
Work that pays, results that count, and a small circle they've trusted for years.
These four nurture and protect what's built to last, without much fuss.
Creator of the CoreTypes system
I read personality type from speech. Everything on this site grew out of that: the free test, my books on the sixteen types and my articles on how types get along.
Take the free testCoreTypes looks at how a person talks, not at what they say about themselves. The free test gives you a first working version of your type.
On each of the sixteen types, on how they get along, and on hearing a type in speech. I write so you don't need any background to follow.
Mostly about pairs of types: what happens when two meet, where it's easy and where they'll have to work things out. Read them in any order.

Your type: how it works, where it's strong, where it's weak.

How your type gets along with each of the sixteen.

How to hear a type in speech, your own and other people's.

Catalyst
Are ENTP and ISTJ compatible? Revision relations: a Catalyst's easy stream of "what if" lands on a Sentinel's sorest spot, and mostly one way.
Published 23.10.2026

Duke
Are ESFP and ESTJ compatible? Request relations: a Duke's goodwill and ease with people draw an Overseer in, and the pull runs stronger one way.
Published 22.10.2026

Executor
Are ENTJ and ISTP compatible? Revision relations: a Craftsman's sense of comfort and physical ease lands on an Executor's sorest spot, mostly one way.
Published 21.10.2026

Harmonist
Are ISFP and INFJ compatible? Request relations: a Harmonist leans on a Sage's sense of what's possible, and the pull runs stronger one way.
Published 20.10.2026

Warlord
Are ESTP and INTJ compatible? Revision relations: a Warlord's pressure and push land on a Grandmaster's sorest spot, and mostly one way.
Published 19.10.2026

Beacon
Are ESFJ and ENFP compatible? Request relations: a Beacon's care and comfort draw a Harbinger in, and the pull runs stronger one way.
Published 18.10.2026
Everything else about me is at lextarrel.com
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