I don't know about that Richard, have people changed that much in 40 years, or does the 24 hour news cycle make us more aware of things that happen around us?
When I was a kid, we got the Denver Post in the morning (we lived in Cheyenne, Wyoming), Laramie County Tribune in the afternoon, 1/2 hour of local news 3x a day on one of the three tv stations we got (ABC, NBC, CBS), and 1/2 hour of national (network) news in the evening, that was it! Hell, phone numbers were only 5 digits for local calls (have to talk to woody or woodienut to discuss party lines
).