I'm interested in correlations between the MBTI and the FFM, but my expertise on the technical details is severely limited. The correlations were brought up in the thread 'Variations within Types'. Some claim that the FFM trait of Neuroticism is missing and so maybe this could be a further distinction made. But others claim that it isn't missing. I'm also interested in the sub-traits of both systems, and how they relate to all of this. There are critics of both MBTI and FFM, and I'm trying to sort out what is valid and useful.
What do you think of the following information?
"One common criticism is that the Big Five do not explain all of human personality. Some psychologists have dissented from the model precisely because they feel it neglects other domains of personality, such as Religiosity, Manipulativeness/Machiavellianism, Honesty, Thriftiness, Conservativeness, Masculinity/Femininity, Snobbishness, Sense of humour, Identity, Self-concept, and Motivation. Correlations have been found between some of these variables and the Big Five, such as the inverse relationship between political conservatism and Openness (see McCrae, 1996), although variation in these traits is not entirely explained by the Five Factors themselves. McAdams (1995) has called the Big Five a "psychology of the stranger," because they refer to traits that are relatively easy to observe in a stranger; other aspects of personality that are more privately held or more context-dependent are excluded from the Big Five.
In many studies, the five factors are not fully orthogonal to one another; that is, the five factors are not independent. Negative correlations often appear between Neuroticism and Extraversion, for instance, indicating that those who are more prone to experiencing negative emotions tend to be less talkative and outgoing. Orthogonality is viewed as desirable by some researchers because it minimizes redundancy between the dimensions. This is particularly important when the goal of a study is to provide a comprehensive description of personality with as few variables as possible. There have been arguments against the close mindedness of this study particularly over how you cannot interpret humans emotions and fellings into words."
"Our results indicated that by including responses to a number of previously unused “research” items, the MBTI can indeed be scored to produce
measures of all of the Big Five constructs:"
"FFM neuroticism is the first FFM trait I will map the MBTI to since this is the FFM trait that McCrae & Costa (1989) claim can not be represented by an MBTI trait. The MBTI equivalent of neuroticism is the three factor trait NFJ. NFJs include the heavily burdened by world problems cult leaders, social activists and idealistic academicians. The MBTI three factor trait STP is inversely related to neuroticism. STPs include the unflappable airline pilot, sharpshooter and surgeon."
"McCrae and Costa (1989) in comparing the MBTI to the FFM had several complaints about the MBTI and the Jungian theory upon which the MBTI is based. One complaint is that the MBTI does not expand enough on the meaning of its scales while the FFM offers lots of key words to go with each scale. Keirsey gives very detailed descriptions for the 16 possible combinations using the anchors of the four MBTI scales. These descriptions are much better than just a list of traits."