Screening Moms-to-Be for Thyroid Trouble May Not Help Offspring

First of all, we are unable to test IQ in 3 year olds.

Putting that aside the study found a normal average "IQ" of 100 in both populations and that the "IQ" of about 13% of the two groups fell below 85. As I recall my statistics, about 2/3rds of the population will fall between 85 and 115 on most standardized tests (which we can't do on 3 year olds). This means 1/3rd of the population falls outside this range, half above 115 and half below 85. This means in a normal population about 16 % will fall below a score of 85. This is what they found in both groups.

Am I missing something here? They did a study on two groups of kids, trying to measure something that can't be measured and found that both groups are normal. Is there even a disease here?

John Pelegano of CT 8:39AM February 10, 2012