Measuring Reliability

The Myers-Briggs Type Indicator (MBTI) is peerless of the most popular record tests in the world today. However, data reviewed from more than twenty MBTI research studies has indicated that the test has inadequate validity. In other words, MBTI does not adequately tone what it is meant to measure. Moreover, MBTI has reported dependability coefficients for its four scales on general population samples in the grazes from 0.61 to 0.87. Experts on psychometric testing reveal that reliableness coefficients for short temperament tests should actually be in the range of 0.7 to 0.8 (Psychometric Success).Does this mean that MBTI is unreliable? No. While this important personality test sometimes reveals a depress reliability coefficient than the other personality tests, flat when its reliability coefficient is close to 0.61, the test is express to give us a proficient measure of the constructs it measures at least 61% of the time. To put it another way, at least 61% of the peop le who use the MBTI at one time would see that their scores on the distinct constructs of the test would not change on a second testing seance and all subsequent testing sessions. reliability is also known as repeatability or consistency. A test with perfect reliability has a coefficient of 1.0. A test with no reliability whatsoever has a coefficient of 0. A test with perfect reliability is one which gives us absolutely consistent results with the same sample. The higher the reliability, the better is a test, scientifically, given over that we can trust the results of this test with arrogance, penetrative that they will not change drastically through retesting (Trochim, 2006).With MBTI, we can be confident that the test would show us a true picture of an individuals personality at least 61% of the time. Although this value is better than 50%, MBTI would leadgiven us greater confidence in terms of its measurement if its reliability coefficient always fell in the range of 0.8 to 0.9. This would have led us to suppose that MBTI is most definitely a reliable measure of an individuals personality type.References1.Psychometric Success. Myers-Briggs Widely Used But noneffervescent Controversial. Available at http//www.psychometric-success.com/index.htm. (31 January 2007).2. Trochim, William. (2006). Theory of Reliability. look into Methods Knowledge Base. Available at http//www.socialresearchmethods.net/kb/reliablt.php. (31 January 2007).