IIRC, breast-feeding rates were plummeting in Europe in the late 20th century, but there was no substantial decline in IQ as far as I know.
The Flynn effect has been stopping in Europe in past decades, to name one observation.
IIRC, breast-feeding rates were plummeting in Europe in the late 20th century, but there was no substantial decline in IQ as far as I know.
The Flynn effect has been stopping in Europe in past decades, to name one observation.