The science on most personality types is pretty iffy and a book like "The Modern Enneagram" does nothing to dispel that. While a book like Berghoef and Bell's will likely lead to some helpful introspection, I don't know how much benefit it has beyond a being a helpful springboard for a consideration of personality and motivations.
What I like best in the Enneagram-- its connection to motivations-- is largely lacking here. Cron and Stabile's "The Road Back to You" does a good job at utilizing the Enneagram to process healthy and sinful motivation. In contrast, "The Modern Enneagram" is largely severed from spiritual consideration. In fact, at the end of the book there are sections that have the reader utilize the Enneagram for "The Enneagram in Practice": the authors navigate areas like relationships, vocation, and spirituality. The spirituality section is a solitary page.
The other concern that I have with the Enneagram that only increased in my read of "The Modern Enneagram" are the various ways that practitioners of the Enneagram slice and dice the Enneagram to serve a multitude of purposes. For instance, the Enneagram not only offers its practitioners one of nine types to identify with, but then shares that each of those types moves to a stress type when anxious and a security type when in peaceful situations. It is also broken into three centers (gut, head, and heart), social styles triads (assertive, compliant, and withdrawn), conflict resolution styles triads (competency, emotional realness, positive outlook), object relations triads (attachment, rejection, frustration), and on and on. What one finds is that the deeper you dive, the more you find that connects with you and the more that don't match at all. It feels like a Rorschach ink blot test-- there are a lot of splotches on the paper and you can make out of it whatever you want.
The Rorschach test is an apt analogy as the (quite beautiful) illustrations throughout are done with watercolor. There's lots here that the reader can turn into beauty, but is it true? I have a growing suspicion that there isn't much here that is true. But maybe that's just what a three would say. ;)
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