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The purpose of the Myers-Briggs Type Indicator (MBTI) personality inventory is to make the theory of psychological types described by Carl Jung understandable and useful in people's lives.
The use of the MBTI in career counseling is to help people find meaningful and productive work.
3,009 adults 18 years and older from across the US. Percentages of age, gender, and ethnic group matched 1990 US census percentage.
Facts about the MBTI instrument reliability:
- Reliability is as good as or better than other personality instruments.
- On retest, people come out with three to four type preferences the same 75% to 90% of the time.
- When a person changes type on retest, it is usually on one of the dichotomous pairs (e.g., E-I or S-N), and in a dichotomy where the preference clarity was low.
The reliabilities are quite good across most age and ethnic groups. (The T-F pair tends to have the lowest reliability of the four scales.)
For some groups reliability can be low, and caution needs to be exercised in using the MBTI instrument with these groups, e.g., children, underachieving students.
Validity of personality assessments is often established through construct validity by showing that the results of the assessment relate in a predictable manner to results of other similar measures they should be related to and are not related to results of measures they should not be relate to.
MBTI dichotomies were correlated with scales of several other assessments such as the CPI 260, FIRO-B, and the Strong Interest Inventory. Validity was also established through best-fit analysis and factor analysis.
- No time limit
- Can be read to test takers
- Do not explain meanings of words
- MBTI is an indicator, not a test
Myers-Briggs Type Indicator
MBTI
Reliability
Target Population
14 years and up. Seventh grade reading level.
Administration
Preference Clarity
Types
Norm Group
Personality types result from interactions among the four MBTI dichotomies. These dichotomies encompass four opposite domains of mental functioning: opposite ways of perceiving, opposite ways of judging, opposites attitudes in which preferred percetion and preferred judgment are typically used, and opposite ways of relating to the world.
Time to Administer
Test Time: 15-25 minutes
Total Administration Time: Approximately 1 hour
Purpose
Validity
Interpretation of Results and How You Can Apply Them
http://www.myersbriggs.org/my-mbti-personality-type/mbti-basics/
The Four Dichotomies
References
Whitfield, Edwin, Feller, Rich, Wood, Chris (2009). A counselor's guide to career instruments
(5th ed.). Broken Arrow, OK: National Career Development Association.
Myers, Isabel, McCaulley, Mary, Quenk, Naomi, Hammer, Allen (1998). MBTI Maunal
(3rd ed.). Palo Alto, CA: Consulting Psychologist Press, INC.
http://www.myersbriggs.org/my-mbti-personality-type/mbti-basics/