The decline in general intelligence estimated from a meta-analysis of the slowing of simple reaction time
>Simple reaction time has slowed since 1889.
>Psychometric meta-analysis reveals a decline in g of − 1.16 points per decade.
>The decline between 1889 and 2004 is − 13.35 points.
>The decline between 1889 and 2004 is − 12.45 points.
>This is the first direct measurement of a probable dysgenic trend in IQ.
http://www.sciencedirect.com/science/article/pii/S0160289613000470
>>3171888
>Psychometric meta-analysis
Yeah no
>>3171888
Yeah, people tend to acquire quick reaction time when their jobs involved getting shoved inside large, moving pieces of machinery as a child.
>>3172243
Source?
>>3171888
>cleverer
Hmmmmmmmmm did you mean more clever?? I suppose so.
This looks like junk science if I ever did see it.
>>3172319
https://en.wikipedia.org/wiki/Mule_scavenger
19th Century labor conditions were pretty Modern China-tier.
>>3172319
I know the guy provided one but how the fuck does the statement "At the time of the industrial revolution, worker conditions were very poor" need a source? That's common knowledge dude.
>>3172391
I wasn't validating your shitty theory, I was making fun of it.
But I suppose you'd be more alert if you're work is very dangerous.
>>3172391
Think, you fucking idiot, if your job involves ducking under machinary in order to not get decapitated then you're going to learn to throw your head down pretty fucking fast.
>>3171888
their written exams were fucking brutal , but what do you expect from a stoic society
>>3171888
thought id venture out of /sci/ and fucking IQ thread straight away.