y and Myers (1985) state that the MBTI differs from other personality instruments in these ways:
             · It is designed to implement a theory; therefore the theory must be understood to understand the MBTI.
             · The theory postulates dichotomies; therefore some of the psychometric properties are unusual.
             · Based on the theory, there are specific dynamic relationships between the scales, which lead to the descriptions and characteristics of sixteen 'types
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