De ce a început să scadă IQ-ul după anul 1975

A study on 730,000 Norwegian recruits reveals a decline in IQ scores after 1975, reversing a century-long trend of increase. Researchers found that environmental factors, rather than genetics, likely contributed to this decline. The study analyzed military test results from men born between 1962 and 1991, showing a drop of about seven IQ points per generation. While some recent data suggests variations in cognitive abilities, no definitive conclusion indicates a general decline in human intelligence.