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Cognitive Personality Theory is a new system focusing on individual differences, positing type not as a set of letters to define who we are, but rather a series of limitations that can, with patience, be overcome.

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Find your CPT type code!

Learn more about Typing Services.
Basic Express Tier I Tier II
E-mail exchange
Most likely type + alternative
Hour video call
Additional 30 min call for Q&A
PDF report
CPT type score


Text-based service for streamlined type estimation.
  • Short E-mail exchange
  • Type descriptions for each
  • Most likely type, and secondary alternative
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Time-efficient service with CPT-approved typologist Rob.
  • E-mail exchange
  • 1 hour video call
  • Most likely type, and secondary alternative
  • In-call and E-mail result
  • Extra 30 min call for Q&A
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Tier I

In-depth service to iron out uncertainties and explain type in detail.
  • E-mail exchange
  • 1 hour video call
  • Most likely type, and secondary alternative
  • PDF report
  • Extra 30 min call for Q&A
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Tier II

Full exploration of type dynamics exhibiting functions in depth.
  • E-mail exchange
  • 2x 1 hour video calls
  • Most likely type, and secondary alternative
  • PDF report
  • Extra 30 min call for Q&A
  • CPT Type Score

Type Coaching

Suited for those who know their CPT type code, I also offer individual coaching & consultations.

This is for those interested in applying type to get further on their journey.

Support CPT

With your support, CPT can continue evolve and expand!

Benefits start with invites to monthly CPT Livestream & access to our Discord server.

Tier 1 typing service

Rated 5 out of 5
13th November 2022

Hi my name is Shahow I purchased the type tier 1 service to get clarification on what type I could be because For the longest time I was confused as to what my accurate type was during my 1 hour call with Harry on October 23rd he was really patient, polite and listened to what I had to say. After 10 days I got my analysis on what type I am my result was ISTJ a type that I never considered it was really detailed and accurate I found myself agreeing with it because of how much it made sense to me. Conclusion is the money for this service is worth it.


Response from Cognitive Personality Theory

Thank you Shahow, I appreciate you taking the time to leave a review 🙂

Finally confident in my type!

Rated 5 out of 5
29th October 2022

I was stuck between INFP and ISFP for a long time. Harry really helped me to understand why I’m an ISFP and how I’m actually processing information instead of relying on stereotypes. His typing service was highly in depth and insightful. He doesn’t just provide you a type, he helps you understand where you fall on the spectrum of your type and to what degree you have developed all of your functions.

Furthermore, he’s compassionate and a great listener with equally great questions. I could tell he really cared about helping me get the most out of our sessions and was happy to clarify anything that I was confused about. He’s also fun to talk to! I’m now fully confident in my type and I highly recommend Harry’s services to anyone seeking clarity and self improvement!


Response from Cognitive Personality Theory

Thank you so much, Lauren – it was great talking to you!

Low Stress and Logical Typing

Rated 5 out of 5
17th October 2022

ISFP here who has been confused for years. Having all my motivations laid out and described by Harry was well worth the price. I’d absolutely recommend his typing service.

Tom B

Response from Cognitive Personality Theory

Thank you, Tom!

Wonderful experience!

Rated 5 out of 5
16th October 2022

This was a fantastic experience! I do not enjoy talking about myself and am generally pretty private about my most personal thoughts, so I was very nervous about doing this, Still, I was quite confused about my personality type and eager to learn more. Harry was very welcoming and easy to talk to and asked fantastic questions. I’m not very good at articulating a thought in the moment and was concerned that I was giving him a garbled mess of half-finished thoughts to work with but through some sorcery, he produced an insightful detailed report that gave me a better understanding of myself and my cognitive processes. I did commit to myself ahead of time to being fully transparent and open throughout the process, which I do think is important. I’ve been able to use some of the things I’ve learned already to make some small steps to realize goals that I hadn’t fully formed before. It’s a fantastic tool for self-discovery and growth and I can’t recommend it enough. I hesitated in doing this for quite a while and am so glad I did.

Mary Jo

Response from Cognitive Personality Theory

Thanks Mary Jo, I really appreciate the kind words!

Worth it

Rated 5 out of 5
29th August 2022

Very satisfied with my CPT typing experience. I had long been between types, and after much deliberating, finally booked the Tier II service. Worth every penny.

I found Harry easy to talk to despite my usual hesitance about calls. He was polite and professional, never hurried, and knew how to lead the conversation. I was surprised by how much ground was covered over just one call, let alone two, and impressed by how accurate Harry’s report was given that short amount of time. He is truly knowledgeable, and at every step of the process I felt I was in capable hands.

I also appreciate the fluidity of the Cognitive Personality Theory model—I think it accounts for a lot of the variance you see even between people of the same type, while remaining true to their cognition. As most others have said, it dispels stereotypes common to the traditional system…but what I most like is that it encourages typing by functions as pairs rather than looking at them in isolation.

I highly recommend Harry’s typing service and would suggest it to anyone seeking clarity, especially if the confusion stems from feeling between types. Most people realistically won’t fit into any one box, and this is where I think CPT really excels—its holistic approach explains common differences while leaving room for individual variation and further growth. The alternative type I was suggested was something I’d never considered, and superficially seemed very different from the first-choice type, but after reading further I realized how similar they really were. Lastly, Harry’s questions are so specific that one would struggle to answer according to a certain type—a huge boon in alleviating my doubts about subconscious bias.

In all, my experience with this service was very positive; I’m glad I finally decided to seek an expert opinion. Harry is eminently skilled in picking out underlying cognition while accounting for growth and change over time. Definitely worth the money, and I would readily recommend this service to anyone on the fence.


Response from Cognitive Personality Theory

Thank you so much for this review, Dami, it is truly appreciated. It was a pleasure to get to know you and I’m so glad the CPT approach gave you the clarification you were looking for.

As you say, the system is all about growth and fluid variation between individuals, so it means a lot to read your testimonial!

Thanks Harry , it was nice to have your trustworthy assessment.

Rated 5 out of 5
9th August 2022

It has been for a while and I’m writing this. And after knowing the result which was a little bit unexpected and different from what I was believing who I was within the theory, I don’t mean I always rely on judging myself via typology, though, now I feel like I have been knowing how to use what I am good at healthily, which is why I originally intended to have the service.

Best of all, I could see the effort he made for understanding my self-observation even though it’s written in English as my second language.

And It was the upstanding service which was with an objective and appropriate sense based on his profound theory that purely transferred from my self-observation.

(So I consider people have to watch it out as his application form says.)


Response from Cognitive Personality Theory

Thank you Yuko, I truly appreciate the kind words!

The Best Type Service Out There

Rated 5 out of 5
9th July 2022

To be honest, most type services out there, are for your money. CPT, is not like that at all, they give you accurate information, they respond to questions objectively, and they give you a type which is just combines with mbti as a whole! Overall 10/10 would give more stars.

Dony Cave

Response from Cognitive Personality Theory

Thank you so much Dony! Both myself and Rob really appreciate the kind words.

Amazing Service!

Rated 5 out of 5
27th June 2022

I would absolutely recommend this service for anyone looking to know their cognitive type! Harry is more than competent, prompt, kind, and super easy to work with/talk to overall. Something else that’s super appealing is that his written reports (if one goes for that tier) are extremely comprehensive and detailed; it really gives you a look into your own cognition, your own proclivities, things you may not even notice about yourself, etc. This really is an excellent typing service for anyone looking for a self-improvement mechanism. Honestly, the whole experience was just a pleasure, and I’d highly recommend it!


Response from Cognitive Personality Theory

Thank you my friend, it was a pleasure!

Thorough typing and great feedback

Rated 5 out of 5
30th January 2022

I wasn’t impressed with other typing services, as most of them tend to focus on the very simplistic interpretations and even more simplistic questions, which can be answered in a variety of ways depending on ones mood. Harry asked insightful and thought provoking questions which in addition to type gave me an insight into myself, and a different perspective on some of the issues. We found ourselves agreeing on the cognitive axis and Harry was kind enough to take my perspective on the type into consideration, and gave a thorough explanation on his perspective, as well. I would recommend Harry to anyone who is struggling to find their type amidst the sea of different systems, as I think that the explanations are more than adequate and take into consideration the basis of the Jungian theory.


Response from Cognitive Personality Theory

I truly appreciate this feedback my friend! It was my pleasure to provide additional clarity and insight into your cognitive processes 🙂

Excellent Typing Service

Rated 5 out of 5
1st December 2021

The tier 2 service was what I purchased. Harry was very kind and pleasant and answered any questions I had. He provides a thorough explanation of what type you could be. I found myself discovering more about myself throughout the sessions. He helps debunk a lot of misconceptions in the type community and provides a document that succinctly showcases the subtleties that you specifically can have for that type. I highly recommend this service.


Response from Cognitive Personality Theory

Hey Tharu, it really means a lot to hear this from you! It was great meeting you and I’m so glad the service was valuable 🙂