Now I'm curious if it matters what you watch.
There was some exclusion of other factors in the study per TFA.
<https://en.wikipedia.org/wiki/Communications_in_Saint_Helena...>
Total population (2021): 4,439. <https://en.wikipedia.org/wiki/Saint_Helena>
Additional areas: South Africa and Tanzania saw television introduced relatively recently, 1975 and 1994 respectively. Those would be larger populations, though confounded by other factors (poverty, racism, higher early-adult mortality due to HIV/AIDS).
<https://en.wikipedia.org/wiki/Geographical_usage_of_televisi...>
That could be interesting.
Mid 1990s is earlier than I thought. Places like Tristan da Cunha and Pitcairn Island may be even later.
Slightly orthogonal: Simon Winchester's book Outposts details many of these, including aspects of their cultures, though I don't recall if he dwelt long on the specifics of television or its lack.
<https://bioeconometrician.github.io/outposts/> (Review)
Several of those islands have significant military and/or communications roles for the UK, and as such may have better-than-expected comms links.
Somewhere like Bermuda or certain smaller Caribbean Islands will have had decent service due to being tax havens (Cayman Islands, Virgin Islands) or major tourist destinations (St. Barts, Bahamas, Barbados). (Jamaica, Cuba, Trinidad & Tobago, and Hispaniola all have large populations.)
I was in Nepal in the early 1990s and there was a surprisingly limited service within Kathmandu (mostly satellite), and none up in the hills. I imagine that has changed a lot since then. I am friendly with a Nepali family here and they watch a lot of Hindi soaps and Bollywood, because they can understand the language. I'm sure Nepal is swamped with "global" content now and is no better for it.
The spread of cable television within the US had distinct limits through the 1980s and 1990s, with much of country (by area, though not population) excluded. Satellite TV had its heyday, and regions in which it was popular (often as the only alternative to very limited over-the-air terrestrial broadcast) were referred to as "Birdland", after the dishes pointed at orbiting "birds", or satellites.
Which is a long way of saying that looking at the proliferation of cable and penetration of satellite TV might allow for some differentiation within US populations.
Back in my uni days, an example which came up was of inverse relationship between fertility and television reception within remote mountain regions in Southeast Asia (Thailand if memory serves, which it does poorly). I'm not finding that reference though there's more recent research of a similar nature:
Diffusion Processes and Fertility Transition: Selected Perspectives, Chapter 7 "Mass Media and Fertility Change" <https://www.ncbi.nlm.nih.gov/books/NBK223858/> (2001).
The general inference being that late-night TV viewing and sex were substitute activities.
Maybe the same could be said about the Marvel films. You don't have to concentrate much, but you are guessing some of what is going on.
Some programmes do require some more imagination or interaction. A murder mystery, if it's any good will get you wondering whodunnit. If you are watching a better quality gameshow, you may be at least attempting to answer the questions. Or both may be wall paper.
>Those who reported high amounts of sitting at work actually had larger frontal and occipital lobes, as well as reduced white matter hyperintensity volumes, indicating better brain health than among those who sit to watch TV. This could be due to the intellectually stimulating nature of many sit-down jobs, say the study authors.
edit: thats great... addressed in the first paragraph.