Tonight's
lead news article, Flynn
and Dickens, In Their Own Words , presents an explanation of Drs. Flynn and Dicken's
new theory concerning nature versus nurture. What the theory proposes
is basically the idea that the competitive bar in mental performance
has continually been raised since the closing years of the 19th
century. Cultural expectations of what may be expected from people--children
and adults--has evidently steadily risen since the onset of the
industrial revolution. At this point, I need to interject a personal
note.
I believe that the Flynn Effect, far from
being confined to the intellectual arena, is also underway in
other realms of endeavor such as sports, dance, ice skating, music,
and other venues of human interest. I have remarked many times
over the past few years about the incredible performances that
children give today in all these areas compared to what we did
in the thirties. We had no coaching, and the standards of excellence
we had to meet were minimal compared to today's performance levels.
Two years ago, Tommie Jean and I attended an ice skating show
in Pell City, Alabama (a suburb of Birmingham). The children's
performances were at par with what we've seen in the Winter Olympics,
on TV. (I'm sure they weren't really at par with Olympic finalists,
but they were stunning compared to what we expected.) I grew up
in ice-skating country (northern Ohio). We skated by the hour
on Silver Lake, but we were clowns compared to what those Pell
City kids could do. A similar situation exists with every kind
of ballgame. We had a very desultory attitude toward football,
baseball, and basketball. Today's children are better at 10 than
we were at 16. So I can believe that a combination of coaching
and elevated expectations has brought kids today to levels that
we wouldn't have dreamed possible in 1939, shy of the movies.
It's worth noting that all of these activities
involve primarily mental processing (coaching and training) rather
than physical prowess
What's surprising about this subject is
that IQ's can be raised so massively after all the failed attempts
to boost children's IQ's in major studies. We can do in the field
what we can't reproduce in the lab. I've thought for a long time
that many of the experiments to boost one's own children's IQ's
have been successful. It's too much of a coincidence that John
Stuart Mill came out so inordinately intelligent when his father
made a project out of currying intellect in him. I think the same
thing holds true for William Sidis. If IQ were independent of
environment, then Boris and Sarah Sidis would have produced a
very bright child, since they were very bright parents, but little
Billy wouldn't have been so off-the-wall intelligent. A similar
situation probably holds true with Norbert Wiener, and with certain
other cases with which I'm familiar.
In other words, efforts to boost IQ, when they've
occurred in the home with the force of parental influence behind
them, might have worked. (I don't know how much has been tried
that didn't work, so I'm speaking here as an ignorant amateur.)
If IQ gains began as early as 1870 and ran three
points per decade, as Dr. Flynn believes, by now they would amount
to 39 points looking backward, or 64 points looking forward. Even
if we assume that this refers to ratio IQ's, it's still enough
gain to take one's breath away. The average citizen today would
place at the 1-in-30,000 level (four sigma, IQ 164) on tests normalized
for 1870. In fact, British citizens born in 1877 and given the
Raven Progressive Matrices in 1940 had an IQ of 60 when measured
against comparable British subjects born in 1963 and given the
same test in 1991.(This 40-point rise in IQ occurred over a 90-year
span rather than a 130-year interval because pure "g",
as measured by the Raven Test, has risen nearly twice as fast
as the amalgamation of fluid plus crystallized intelligence that
is measured by such tests as the WAIS and the Stanford Binet.)
Hans Eysenck has concluded that, on balance, the geniuses of the
past probably had IQ's that fell three or four sigma above the
mean. This means that the average British citizen of today
is as bright as such past geniuses as Thomas Locke or David Hume.
So what of the above-average citizen? There are claims that the
Flynn Effect applies only to the lower to middle ranges of IQ.
That might be argued in the light of the idea that people who
function at higher IQ levels have already driven themselves to
the upper limits of human capability. However, that would produce
some strange effects. If someone with IQ of 100, as measured by
today's (2001) IQ norms, scores, on average, 133 on the 1916 revision
of the Stanford Binet, and someone with an IQ of 140, as measured
on today's IQ tests, scores a 143 on the 1916 revision of the
S-B---only 10 points more on the 1916 test than someone with a
present-day IQ of 100---the Gaussian distribution on the 1916
S-B would fall off extremely steeply, falling from its maximum
(0.4) to almost zero (0.0175) over an interval of 10 points rather
than 40 points. This should be easy to test. I don't have a copy
of the 1916 S-B, but I do have copies of the 1931 Henmon Nelson
Test. All we need are a few individuals (e. g., children) with
IQ's of 100 and a few with IQ's of 140 to check this for ourselves.
If the Flynn Effect does apply to higher
IQ's, then we are seeing some very high IQ's indeed when calibrated
against older tests. And looking at the incidence of precocity
I see around me, I can well believe that to be the case. Leta
Hollingsworth mentions that human IQ's probably don't go above
200. None of the Quiz Kids scored significantly above 200. Only
one of the Quiz Kids began reading as early as 2, but there are
individuals within Tommie's family who started reading at two.
And there are levels of precocity that would have been unthinkable
in the 1930's. It made national news in the 40's when Arthur Greenwood
scored 205 on an IQ test (in Florida). Justin Chapman made a 298+
on the third revision of the Stanford Binet administered to him
by Dr. Linda Silverman. And this was on a 1973 test.
Dr. Flynn mentions in his paper that,
beginning in 1950, gains became restricted to improvements in
problem-solving abilities rather than in arithmetic, vocabulary,
and general information. These areas more or less froze at their
1950 levels, and may even have dropped slightly, as registered
by SAT scores. Dr. Flynn says,
"After 1950, some nations such as the US
and Britain have provided test information that allows us to break
down global IQ gains into their components. The gains begin to
show a new and peculiar pattern. They are missing or small on
the kind of IQ tests closest to school-taught material (vocabulary,
arithmetic and so forth), but they are huge on tests that emphasize
on-the-spot problem solving (working out what verbal abstractions
have in common, finding the missing piece of a matrices pattern,
or arranging pictures to tell a story)."
What's so extremely important about the
Flynn Effect... important beyond the rise in IQ's that has occurred...
is what it says about the possibility of raising one's IQ through
due diligence. Apparently, that can be done when the effort is
made over a lifetime. It also helps explain why above an IQ of
120, there is only a small correlation between IQ and success
in one's chosen field. There are, by definition, 1,000 times as
many individuals with IQ's of 120+ as there are those with IQ's
of 160+. It wouldn't take many IQ's at the lower end of the range
to drag down a group average. If only one in 100 with IQ's
in the vicinity of 120 make it into the group of "most-illustrious
performers", and the one person with an IQ of 160 is also
there, the average IQ of the "most illustrious performers"
would be about 124.
The table below, taken from Grady Towers' "The
Empty Promise" showcases this phenomenon.