Glenn wrote:
What is defined as average or above average intelligence goes as low
as 70 IQ (not starting at 90 or 100 or so)


I agree with much of what Glenn had to say, but can't let the above go
without commenting. On the Wechsler scales, "average" IQ is 90-110. Various
levels of mental retardation begin below about 70. A person whose score
falls in between is considered to have "low average" intelligence.
Arlyn Roffman, PhD
Lesley University