There are currently six distinct forms of the MBTI^® questionnaire. Each one is different in its use or its scoring.

Form M (93 items). The current standard form of the MBTI^® instrument. Scored for four-letter type and the preference clarity indexes. Computer or template scoring available. Computer scoring may be done through mail-in prepaid answer sheets or through online administration and scoring. When the instrument is computer scored, the results are returned to the professional. Use it when you are able to give the MBTI instrument ahead of the feedback session.

Form M self-scorable (93 items). The current standard self-scorable form. Scored for four-letter type. The preference clarity indexes may also be calculated. It is hand-scored by the individual taking the Indicator, or by the professional. Use it when there is not time to give participants the Indicator before the feedback session, or when everyone in the group feedback session may not be available to take the MBTI instrument before the feedback session.

Form G (126 items). The previous standard form of the MBTI instrument. Scored for four-letter type and preference scores. Computer or template scoring available. Use Form G only if you have a large number of Form G answer sheets in inventory or you need Form G results to compare with previous Form G results or with ongoing research that uses Form G.

Form G self-scorable (94 items). The previous standard self-scorable form. Scored for four-letter type. It is hand-scored by the individual taking the MBTI instrument or by the professional. Use it only if you have large numbers of Form G answer sheets in inventory.

Step II™ Form Q (144 items). Used to generate a four-letter type and scores on twenty facet scales, with five facets in each of the four primary MBTI dichotomies. The facet results highlight individual differences within type. Used when in-depth individual feedback is needed (e.g., coaching, counseling, executive development, relationship counseling).

Step III™ (222 items). Designed for anyone who wants to increase awareness about the specific and unique ways they use their type in making life choices. In-depth sessions with a trained Step III professional help the client gain insight necessary for becoming more effective in the natural use of their type. The MBTI^® Step III™ Interpretive Report is written directly to the client using "non-type" language. The counselor helps the client process the statements generated to address their current level of self-confidence, approach to difficulties, sources of enjoyment, and more. The Step III instrument and Interpretive Report are available for purchase and use only by professionals who have successfully completed the MBTI^® Step III™ Certification Program.

Go to CAPT.org for information on the MBTI^®Step III™ Certification Program.