CBS Sacramento - IQ scores have been steadily falling for the past few decades, and environmental factors are to blame, a new study says.
Norwegian researchers analyzed the IQ scores of Norwegian men born between 1962 and 1991 and found that scores increased by almost 3 percentage points each decade for those born between 1962 to 1975 — but then saw a steady decline among those born after 1975.
Similar studies in Denmark, Britain, France, the Netherlands, Finland and Estonia have demonstrated a similar downward trend in IQ scores, said Ole Rogeberg, a senior research fellow at the Ragnar Frisch Center for Economic Research in Norway and co-author of the new study.
....These environmental factors could include changes in the education system and media environment, nutrition, reading less and being online more, Rogeberg said.
1 comment:
is IQ a valuable metric? Better be careful with that idea. It quickly unravels the progressive tapestry into an incoherent mess. The wrong questions will pop up.
For example: Why are IQ tests taken around the ages of 11-13 used as the standard so often? They do measure IQ outside that range, but the 11-13 bell curves get shown to everyone. Why?
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