When was mbti invented

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Last updated: April 17, 2026

Quick Answer: The MBTI was invented in the 1940s, with Katharine Cook Briggs and Isabel Briggs Myers developing the initial framework. The first version of the MBTI assessment was published in 1943.

Key Facts

The MBTI was developed in the 1940s by Katharine Cook Briggs and her daughter Isabel Briggs Myers
The first official MBTI manual was published in 1943
Isabel Briggs Myers began creating the personality inventory during World War II to help women find wartime jobs
The MBTI is based on Carl Jung’s 1921 theory of psychological types
The MBTI has been administered to over 50 million people worldwide

Overview

The Myers-Briggs Type Indicator (MBTI) is a self-report questionnaire designed to identify a person’s personality type, preferences, and strengths. Developed during a time of growing interest in psychology and workforce efficiency, it emerged from decades of research and observation by two pioneering women.

Though rooted in Carl Jung’s 1921 book Psychological Types, the actual MBTI instrument was formalized much later. Its creation was driven by the desire to make Jung’s complex theories accessible and applicable in real-world settings, especially in career placement and team dynamics.

Katharine Cook Briggs began studying personality types as early as 1917, laying the intellectual foundation for what would become the MBTI.
In 1943, the first version of the MBTI assessment was published, marking the official debut of the instrument in practical psychology.
Isabel Briggs Myers started developing the questionnaire during World War II to help women entering the workforce identify suitable war-related jobs.
The MBTI is based on four dichotomies: Extraversion vs. Introversion, Sensing vs. Intuition, Thinking vs. Feeling, and Judging vs. Perceiving.
By 1962, the first official MBTI manual was published, standardizing administration and interpretation across educational and organizational settings.

How It Works

The MBTI categorizes individuals into one of 16 personality types based on their preferences across four key dimensions. Each dimension represents a binary choice, resulting in a four-letter type code such as INFJ or ESTP.

Extraversion (E) vs. Introversion (I): This measures where people draw energy—from external interaction or internal reflection—with 75% of Americans reportedly scoring as Extraverts.
Sensing (S) vs. Intuition (N): This identifies how individuals gather information, with Sensors focusing on concrete details and Intuitives on patterns and possibilities.
Thinking (T) vs. Feeling (F): This reflects decision-making style, where Thinkers prioritize logic and Feeler types emphasize values and empathy.
Judging (J) vs. Perceiving (P): This indicates lifestyle preference, with Judgers favoring structure and Perceivers preferring flexibility and spontaneity.
16 personality types result from combining the four dichotomies, such as ISTJ (The Logistician) or ENFP (The Campaigner).
Type dynamics include cognitive functions like introverted intuition or extraverted thinking, adding depth to type interpretation beyond the four-letter code.

Comparison at a Glance

The following table compares the MBTI with other major personality assessments in terms of development, reliability, and usage.

Assessment	Year Introduced	Developer(s)	No. of Types	Scientific Acceptance
MBTI	1943	Katharine Briggs & Isabel Myers	16	Mixed
Big Five (OCEAN)	1980s	Multiple researchers	5 traits	High
Enneagram	1970s	Clarence Meshaka	9 types	Low
DISC	1930s	William Moulton Marston	4 styles	Moderate
Hogan Assessments	1987	Robert Hogan	7 scales	High

While the MBTI remains popular in corporate training and personal development, it faces criticism for its binary model and lower test-retest reliability compared to trait-based models like the Big Five.

Why It Matters

The MBTI has had a lasting cultural and organizational impact, shaping how people understand personality in both personal and professional contexts. Despite scientific skepticism, its accessibility and intuitive framework have made it a staple in team-building and career counseling.

Over 50 million people have taken the MBTI since its inception, demonstrating its widespread appeal across industries.
It is used by 89 of the Fortune 100 companies for leadership development and team communication.
The MBTI helped popularize the concept of personality typing in mainstream culture, influencing everything from dating apps to self-help books.
Critics argue that the MBTI has low test-retest reliability, with up to 75% of people receiving a different type upon retesting.
It has been adapted into 27 languages, increasing its global reach and cross-cultural application.
The Myers & Briggs Foundation continues to support research and ethical use, emphasizing personal growth over labeling.

Though not universally accepted in academic psychology, the MBTI’s enduring popularity underscores a deep human interest in self-understanding and interpersonal dynamics.