was sold to CPP, Inc. (now The Myers-Briggs Company), which also publishes the MBTI assessment, and FIRO Element B is owned by Business Consultants Network, Inc. A third FIRO system, called FIRO-Space™ is being developed by Dr. Henry L. Thompson who developed the second one. Correlations with MBTI In a 1976 survey of seventy-five of the most widely used training instruments, the FIRO-B was found to be the most generally usable instrument in training. The popularity of the FIRO-B began to wane as the MBTI became one of the instruments of choice in business. Since FIRO-B uses completely different scales from MBTI, and was not designed to measure inborn "types," it is often used together with the MBTI by workplaces. Now the two are offered together by The Myers-Briggs Company. Statistical correlation has been observed between FIRO-B and MBTI by John W. Olmstead, and also Allen L. Hammer with Eugene R. Schnell; and between Element B and MBTI by Dr. Henry Dick Thompson. References Human communication Personality tests