Haidt's claim seems to be the effect is strongest during gestation/early childbirth. Possibly there weren't as many cars around before the mid 1960s, so Boomers didn't suffer the same effect? Just a guess.
Haidt's claim seems to be the effect is strongest during gestation/early childbirth. Possibly there weren't as many cars around before the mid 1960s, so Boomers didn't suffer the same effect? Just a guess.
Haidt's claim seems to be the effect is strongest during gestation/early childbirth. Possibly there weren't as many cars around before the mid 1960s, so Boomers didn't suffer the same effect? Just a guess.
Only about 60% of Americans lived in cities in 1950. By 1980, it was about 75%.
Thanks. Did not consider population distribution.
My limited research confirmed when the lead effect is strongest. Most Boomers were 14 or under by 1960, so fewer cars makes some sense.