>The AFQT score in the NLSY is the sum of the standardized scores of four tests: arithmetic reasoning, paragraph comprehension, word knowledge, and mathematics knowledge, and is expressed as a percentile score out of the general population
To my non-expert perception this does seem like a test that benefits from studying and general schoolwork (ie: reading books).
They used the The Short Grit Scale to determine grit (http://www.sjdm.org/dmidi/files/Grit-8-item.pdf) which seems like it biases toward un-creativity and "OCD completionism."
It makes perfect sense to say that one factor is more important than another if it has more effect on the outcome.
Intelligence is not fixed. It can certainly be decreased by long term stress and environmental toxins etc.
It can also be enabled or inhibited by situational factors such as access to information, available time, etc.
Working ‘harder’ is not well defined. Do you mean going faster at doing the same things, or spending more time working? If not, can you define it?
Working harder or faster on something that is systematically unproductive will only make ones situation worse.
Intelligence is the capacity to select valuable activities in which to invest one’s energy.
Therefore grit doesn’t matter at all in the absence of intelligence, or can even be a negative.
Pedantically speaking, a depressed person can easily have zero drive to do stuff and still be intelligent.
As I said in another comment, "fixed" intelligence implicitly means a fixed ceiling; assuming we all know of intoxication, dementia, etc. is something I think is required by HN standards of being reasonably charitable towards the people you are addressing, also known as the Cooperative Principle.[1]
Implying that I’m being uncharitable is the antithesis of the cooperative principle.
I’m being neither charitable nor uncharitable. I am merely disagreeing with your logic.
As I mentioned elsewhere, I disagree with the idea of a fixed ceiling on intelligence as a general concept.
If you mean performance on narrow tests then I agree there will be ceilings, but that is irrelevant to the general idea.
I think it’s very likely environmental factors and personal mindset have considerable impacts both positive and negative on intelligence. I also suspect in the next decade or two research will come out on pharmaceuticals that show improved mental performance. There’s already the beginnings of this.
Perhaps for performance on a fixed kind of test or for certain kinds of raw calculation speed, it is true, but handling complexity and problem solving skills can continue to develop based on experience and exposure to concepts.
The belief that intelligence is fixed is a trap for the mind.
It's a morass I'm uninterested in getting into.
I agree your original comment used the conditional ‘if’ about the truth of fixed intelligence.
Such a proposition naturally invites examination of whether the conditions are in supported by evidence, which is all I am doing.
I am curious if you have a definition of intelligence that sheds light on your original argument.
I have no stake in what truth you believe.
However I think your argument is clearly incorrect.
As you suggest, I could be basing my conclusion on a different definition to the one you are using.
But if you won’t produce a clarifying definition, you can’t reasonably make claim to be operating under any principle of cooperation.
Very challenging to evaluate without paying $40 to read the paper. They mention a difference in how they group the subjects (by intelligence). My gut take (often wrong!) is that they're grouping the subjects in some way that pushes part of my understanding of grit into intelligence.