r/SeriousMBTI is a subreddit with 2k members. The most common kinds of discussions are advice requests and pain & anger, and the community frequently discusses mbti, personality type, personality types, functions, and cognitive functions.
This group is STRICTly for serious and scholarly discussions about MBTI and using it as a tool to learn, grow and to increase self awareness and understanding of others through it.
When used correctly, this is be a very good tool to understand yourself better, and to understand others better, so you can build better relationships with others, and so you can be your best self, and so you can live the kind of life you want.
Only 18+ allowed.
Popular Themes in r/SeriousMBTI
#1
Advice Requests
: "How do i go about typing myself "
24 posts
#2
Pain & Anger
: "Where the MBTI community likely went wrong"
7 posts
#3
Solution Requests
: "Can someone put all the misconceptions in a section or smth?"
3 posts
Popular Topics in r/SeriousMBTI
#1
Mbti
: "I made a mapping of each Mbti personality's main issues in accordance with cognitive function theory. Do you agree/disagree, and why?"
105 posts
#2
Personality Type
: "Box Plots Of Each Types' Big Five Traits"
44 posts
#3
Personality Types
: "Are different MBTI Personality Types more likely to have a specific psychological condition? (All demographics)"
40 posts
#4
Functions
: "Differences between INFP and INFJ with a focus on parent/child Functions- thoughts on how I’ve explained it?"
27 posts
#5
Cognitive Functions
: "Cognitive Functions shows 100% on both Fi and Fe"
25 posts
#6
Cognitive Function
: "How to determine the dominant Cognitive Function of a type just by looking at the first and last letters"
11 posts
#7
Typing
: "Need Assistance in Typing Myself"
7 posts
#8
Fi
: "I have trouble understanding whether or not I may be a Fi user."
4 posts
#9
Ne
: "How Ni/Ne work with each other?"
3 posts
#10
Relationship
: "Enfp women what do you find attractive in a man? I am Intj and I have an enfp woman who I really like."
3 posts
Flair Used in r/SeriousMBTI
#1
Discussions
: "I made a mapping of each MBTI personality's main issues in accordance with cognitive function theory. Do you agree/disagree, and why?"
84 posts
#2
Advice and Support
: "How do i go about typing myself "
36 posts
#3
Personal Growth and Insight
: "Cognitive functions shows 100% on both Fi and Fe"
27 posts
#4
Debates and Controversial.
: "I saw someone say that certain MBTI/enneagram combinations aren’t possible (ENTP type 9 or ISTJ type 4 for example. What do y’all think?"
9 posts
#5
Meta (About This Subreddit)
: "Mods, can you PLEASE put karma restrictions on this sub?"
3 posts
#6
News
: "Minimum karma count activated!"
2 posts
Member Growth in r/SeriousMBTI
Yearly
+211 members(10.6%)
Similar Subreddits to r/SeriousMBTI
r/CognitiveFunctions
5k members
16.7% / yr
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Last updated: June 16, 2026