Saju and MBTI: Two Ways to Describe a Person

Saju and MBTI: Two Ways to Describe a Person

Saju (Korean four-pillar astrology) and the Myers-Briggs Type Indicator® (MBTI®) assessment both try to put a person into words, but they start from very different places. Saju is a tradition that reads the year, month, day and hour of birth and turns them into eight written characters. You may also see it called "Korean astrology," though saju uses the calendar, not the stars. MBTI begins with a questionnaire you answer about yourself and turns your answers into a four-letter type, one of 16. One reads a moment in the calendar; the other reads your own choices about how you like to do things. This guide sets the two side by side, without ranking them. It is a comparison for curiosity and reflection, not a prediction or a personality verdict.

Each side describes itself in its own words; we are not comparing quality or accuracy, and we take no position on the scientific validity of either.

What saju is built from

The Encyclopedia of Korean Culture, published by the Academy of Korean Studies, defines saju as a religious term for the year, month, day and hour of a person's birth, gathered in order to divine their good and bad fortune. It explains the name with a picture: a person is like a house, and the four birth times are the four pillars holding it up. Each pillar is written with two characters, which is why saju is also called palja, "eight characters."

Those characters come from two sets of labels, the ten heavenly stems and the twelve earthly branches. According to the encyclopedia, every stem and branch is sorted by yin and yang and by the five elements (Wood, Fire, Earth, Metal and Water), and also stands for directions and seasons. In this tradition, the year begins at Ipchun, the start of spring, rather than on New Year's Day.

You do not fill anything in, apart from your birth details. Nothing you say about yourself changes the chart. Two people born on the same date, at the same hour and in the same place share the same eight characters, whatever their habits or moods.

The encyclopedia lists what readers traditionally look for in a chart, among other things: character and aptitude, relationships with parents, siblings, partners and children, and fortunes in areas such as work and study, along with other areas. It adds that some of these are fixed while others shift over time, read in ten-year stretches called daeun and one-year stretches called seun. It says saju puts weight on balance and harmony.

What MBTI is built from

MBTI works the other way around. You answer a questionnaire, and your answers point to your preferences. Its publisher, The Myers-Briggs Company, describes four pairs:

AreaLetters
Directing and receiving energyI (Introversion) or E (Extroversion)
Taking in informationS (Sensing) or N (iNtuition)
Making decisionsT (Thinking) or F (Feeling)
Approaching the outside worldJ (Judging) or P (Perceiving)

One letter from each pair gives a four-letter code, and the publisher says these combine into one of 16 possible types. The Myers & Briggs Foundation calls the opposites preferences, because most people prefer one side more than the other but can use both.

The publisher is careful about what the tool is not. It says the questionnaire is "not a test or a quiz," that there are no right or wrong answers, and that there is no best type to be. It also says the assessment does not measure a person's skills or abilities, which is why it advises against using it for hiring. The foundation adds that the assessment "sorts for preferences; it does not measure traits, ability, skill, or character."

One more detail matters for a fair comparison. The publisher says respondents are encouraged to decide which type best fits them, often in a session with a qualified practitioner. So the person taking it has a say in the final result.

Side by side: inputs, outputs and who decides

Here is the plainest way to see the difference.

FeatureSajuMBTI
What goes inYear, month, day and hour of birthYour answers to a questionnaire
What comes outEight characters in four pillarsA four-letter type, one of 16
Building blocksTen stems, twelve branches, yin and yang, five elementsFour pairs of preferences
Does it change?The chart stays the same; tradition reads changing ten-year and one-year stretches over itThe foundation says "Type is not static; it is dynamic"
Who has a sayThe calendar sets the chart; readers interpret itYou answer, then decide on your best-fit type
Where it comes fromA traditional way of reading birth timeA modern assessment its publisher says has been used for over 80 years

A few points stand out.

Saju describes timing as well as character. Because it is tied to the calendar, the tradition talks about seasons of life, not just a fixed portrait. MBTI, as its publisher presents it, focuses on how you prefer to take in information, decide and deal with the world.

MBTI starts with your own view of yourself. Your answers shape the result. In saju, your self-image plays no part in building the chart, though it may well shape how a reading feels to you.

Both can be read as "not a box." The foundation says type is not meant to limit you or box you in, and suggests thinking of the 16 types as "a 16-room house" rather than 16 separate blocks. Our own approach to saju is similar: our What Is Saju? page says "A pillar is not a verdict." That is our site's view; the encyclopedia describes saju as a way to divine good and bad fortune.

The claims are different in kind. The MBTI publisher presents its tool as an assessment for self-understanding and development. Saju, in the encyclopedia's words, is a tradition for reading good and bad fortune. Our What Is Saju? page says that saju is not a science and that two skilled readers can read the same chart differently. We do not try to settle which is more "correct" here. They are answering different questions.

Can you use both?

You can enjoy both, and they do not have to compete. You might read your MBTI type as a sketch of how you like to work and talk, and your saju chart as a story about the mix of elements you were born into and the chapter you are in now. Where the two seem to agree, that can be a fun conversation starter. Where they disagree, that is fine too, since they work in different ways.

The attitude we suggest is the same one we use for saju on its own. As our What Is Saju? page says, notice what fits, let the rest go, and keep making your own choices. Neither a four-letter code nor eight characters should make a decision for you, and neither replaces professional advice. We treat a saju reading as a mirror, not a verdict, and it is meant for entertainment and reflection.

If you are curious what your own eight characters look like, enter your birth date and hour in our free saju calculator. It shows your four pillars and your Day Master, the stem of your day pillar, which we describe with a simple image such as Oak or Rain (our own English images, not traditional terms). For the background on the tradition itself, start with What Is Saju?.

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Sources

MBTI and Myers-Briggs Type Indicator are registered trademarks of their respective owners. K-SajuPalja is not affiliated with, endorsed by, or sponsored by The Myers-Briggs Company or The Myers & Briggs Foundation.

For entertainment purposes only. Not medical, legal, financial or psychological advice. Read the full Disclaimer. Questions? Visit our Contact page.

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