The Myers-Briggs Type Indicator (MBTI) and Maruyama’s Mindscape Theory should not be considered as competing theoretical configurations because their terms of reference are different. Here, it will be shown how adaptive processes can occur that enable them to be coincident. To do this they must be able to operate in a common frame of reference enabling them to be mutually configured, but this requires a common dimensionality established through the definition of relatable trait spaces. A meta-analysis enabling this to occur will be provided.