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And how you can tell if a person is stable just because they like/don't like "alice in wonderland" I don't get.
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The MMPI, and the profiles in it that are tied to the DSM-IV diagnostic tools, is interesting because it is relatively a-theoretical. It is largely based on observed correlations, and not necessarily theoretical or causal connections. Thus, if researchers have found that schizophrenics prefer to take baths over showers 90 to 10, then that can be a useful data point, if combined with lots of other things that happen to correlate with a particular mental disorder. If you have enough such variables, you don't actually need to know WHY shizophrenics prefer baths over showers, but it can allow you to accurately diagnose them.
It's a little like if a nurse practioner diagnoses you with a kidney disorder by looking at the color of your tongue or something. She doesn't actually need to understand the biology of chemistry of how a kidney disorder can discolor your tongue, but she can know what the sings and symptoms are. Throw in another 10 other physical signs of that kidney disorder, and a nurse can make a very accurate disagnosis, without actually undertanding any of the causal mechanisms involved.
(As a qualifier, I don't actually work with this kind of stuff, but I do have a layman's understanding of it, and remember back to abnormal psych classes in college)
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Ok, then two questions:
Do you think the MMPI, properly administered and analyzed, is a valuable tool for HR-type situations?
Do you think the MMPI is commonly properly administered and analyzed?
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I really don't know enough about the different profiles available for the MMPI to answer that question well.
When I learned about the MMPI, its use seemed primarily to be for diagnosing mental disorders, so it doesn't seem to useful from an HR persepctive based on that. However, my GUESS is that perhaps there are many sub-profiles that have been developed that probably correlate highly with thing like "tendency towards agression" or some such label.
Imagine if you are a city, or police department, and you've recently lost several large lawsuits because of officers that were a little too eager with the beating stick, and had trouble controlling their tempers and agrgession. Suppose that you ran them though the MMPI and found that they all shared a profile of increased agreesion, and that your model officers did NOT have that profile.
While it might not be "fair" to applicants, it might be a good idea for recruiters for the police department to try to avoid hiring people that score particularly high on such a profile (and the city lawyers and administrators may also be driving such decisions).
From a general HR perspective, however, I don't really see how something liek the MMPI would be that useful, since it is not a personality instrument per se - just a diagnostic tool. Especially since there are good personality measures available out there commercially.
(Of course, tons of companies use the Myers-Briggs to "measure" personality, which is a complete joke. Might as well read their applicants' horoscopes or open a fortune cookie.
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