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- Path: sparky!uunet!munnari.oz.au!spool.mu.edu!hri.com!noc.near.net!ns.draper.com!newsgate
- From: skh4161@mvs.draper.com (Kjeld Hvatum)
- Newsgroups: rec.org.mensa
- Subject: Re: IQ Test?
- Message-ID: <01GSYVKMWFAAADDJ6Z@ccfvx3.draper.com>
- Date: 31 Dec 92 09:14:00 GMT
- Sender: mmdf@ns.draper.com (MMDF Master)
- Organization: Draper Laboratory
- Lines: 30
-
-
- >From: Eric Roberts <roberts@gaul.csd.uwo.ca>
- >Message-ID: <1992Dec31.055149.15267@julian.uwo.ca>
- >
- >In article <01GSXMV9SKC6ADDCVB@ccfvx3.draper.com> skh4161@mvs.draper.com (Kjeld
- > Hvatum) writes:
- >>
- >>>From: bhmd1464@altair.selu.edu
- >>>Message-ID: <1992Dec30.133342.1273@altair.selu.edu>
- >>>
- >>> According to my memory, the formula for computing IQ was something
- >>>like mental age * 10 / physical age. How is IQ really computed
- >>>or determined? Can it be done accurately for someone my age (23)?
- >>>
- >>>Brian Acosta
- >>
- >>Mental age * 100 / chronological age is the old forumula.
- >>The modern version, especially for adults, is the deviation
- >>IQ, computed via the normal distribution (bell curve) from
- >>rank in the population.
- >
- >Old or new, useless just the same.
-
- Mathematically speaking, no less useful than percentiles, which are used
- extensively in the educational environment. And more useful in the
- sense that the IQ construct, via its original definition, approximately
- relates percentile differences to age differences among children. As a
- rule of thumb, for instance, it allows you to conclude that a
- 10-year-old scoring at the 75th percentile on a vocabulary test is doing
- about as well as an 11-year-old scoring at the 50th percentile.
-