Singapore is first in the world and it's right in the equator, while Hong Kong, the other one at the top has a humid subtropical climate. Are you perhaps from a cold area? That would easily explain your bias.
Was anyone IQ testing their populations for academic research before AC existed, though?
I'm skeptical of the IQ heat idea - it'd be readily demonstrable if it existed - but the numbers available, particularly outside the US/Europe, are largely current/recent, not from pre-1950s.
Trying to come up with more excuses to feel superior due to your northern European heritage? Sorry pal, smartest people are Asian and many times brown.
The fact that inside the USA, northern states have on average a higher IQ than southern ones, is that a racist fact too related to European heritage?
> A paper recently published in the journal Psychological Reports concludes that of the 48 contiguous United States, those with cooler average temperatures tend to have populations with higher IQs.
Nice one with that article from 2010, I remember when that study came out and it's obviously flawed and one of the reasons why so many people ITT have agreed with this "heat-iq correlation".
As everyone knows, the world is big, only ~4.3% of people live in the US. Unfortunately for you, the US it's not the center of the world. By the way, I couldn't care less about a study correlating the whitest and darkest states in the US, a country that shines in racism, academics in there probably go out of their way to make brown people look bad, like that pseudo scientist James Watson.
Quoted from your article:
> the ancestors of Swedes and Norwegians who were clever and resourceful enough to survive in that harsh climate passed down those heightened mental abilities to their descendants.
That's really funny, since the smartest people in the world are Asians and Italians. What northern Europeans are superior though, in the US mostly, is assuming they are better. Going out of their way with mental models to consider themselves superior.