Well, IQ scores rise over time. Smarter people realize how dumb it is to directly kill, or pay tons for the killing of, dirt poor civilians on the other side of the world. Especially for profits most of them will never, ever see.
Edit: I shouldn’t make it sound as if the soldiers of WW2 were dumb though. As another comment correctly pointed out, there’s a lot of difference between WW2 and at least some modern wars.
I’m pretty sure even the inventors of IQ test say it shouldn’t be used to measure the general intelligence. The only thing IQ test measures well is how good you are at solving IQ tests.
Also
IQ scores have been shown to be associated with such factors as nutrition, parental socioeconomic status, morbidity and mortality, parental social status, and perinatal environment.
Well, IQ scores rise over time. Smarter people realize how dumb it is to directly kill, or pay tons for the killing of, dirt poor civilians on the other side of the world. Especially for profits most of them will never, ever see.
Edit: I shouldn’t make it sound as if the soldiers of WW2 were dumb though. As another comment correctly pointed out, there’s a lot of difference between WW2 and at least some modern wars.
I’m pretty sure even the inventors of IQ test say it shouldn’t be used to measure the general intelligence. The only thing IQ test measures well is how good you are at solving IQ tests.
Also
Source: https://en.wikipedia.org/wiki/Intelligence_quotient
Not to mention that you can get anyone to do pretty much anything if you present them only the right information in the right context.