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I was alerted to your post here and would like to respond to a non-technical side of the question. I'm an Intellectual Property Assistant for CPP, Inc., publisher of the MBTI® assessment tool. I help protect the instrument's trademarks and copyrights, and ensure ethical use of the instrument.

The names MBTI®, Myers-Briggs®, and Myers-Briggs Type Indicator® are all registered trademarks, and they refer to a particular, copyrighted product: the Myers-Briggs Type Indicator assessment tool. There is no open-source version of the MBTI assessment. Also, it would not be correct or legally appropriate to use the trademarks to refer to a different product, such as one of the personality assessments which may be found online. (Some of them already infringe on the MBTI trademarks, so don't be fooled into thinking that's OK!)

I'm glad to read that you're aware of the legal and ethical implications of your idea. I hope what I've said helps, but if you have any more questions, I'll check back here and try to answer them.

My impression is that the actual MBTI assessment is not appropriate for what you're considering, but if you'd like more information about the instrument, its development, psychometric data, and so on, I'd recommend the Myers-Briggs Foundation (www.myersbriggs.org), CAPT.org, or CPP.com. In the meantime, I hope what I've written will provide some clarity about the legal/IP side of things.

MBTI, Myers-Briggs Type Indicator, and Myers-Briggs are registered trademarks or trademarks of the MBTI Trust, Inc., in the United States and other countries.