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Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

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Re: Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

#21

Earlier quoted context omitted.

And the military.

I can't say I object to people who probably have access to lethal weaponry being required to have a minimum level of intelligence. But I'm not a gun advocate.

Minimum or maximum: http://abcnews.go.com/US/court-oks-barring-high-iqs-cops/sto...

Re: Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

#23
I've always had difficulty interviewing because I'm a #2 on this guys list--the "long distance runner" of thinking. My talent has always been slow, methodical crunching of massive amounts of data-- analysis. There's no way to demonstrate this talent during an interviews. I've gotten feedback from interviews and heard, "It's not that you didn't answer every question correctly, it's that you weren't fast enough." So I essentially can't show my most valuable skill to a potential employer.

Re: Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

#24
My IQ is 136. I can attest that it is not an indicator of anything. I am a lazy, average programmer. Whatever benefit I gain from having a higher IQ is offset by my inability to focus for more than a minute. I don't understand how people can study and lack many basic skills because I aways seemed to sneak by without them. I am a chronic procrastinator, only the fear of having to write a final in 24 hours made me study/cram by pulling all nighters. I have a CS degree and rarely went to class, having collected every letter grade A+ through F, and survived being on academic probation (my semester with four D's and an A+). Just one data-point and a counter-example as to why IQ is not a good measure of anything.

According to Gwern[1]: It is worth noting that studies of human genius frequently say that raw IQ and talent are not helpful past unexceptional levels like 130 IQ; what makes the difference is motivation and the "drive to mastery"

1: http://www.gwern.net/Terrorism%20is%20not%20Effective

Re: Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

#25
post #11

The most effective way to filter on raw IQ would be to... filter on raw IQ. But that's illegal.

It's not technically illegal, just legally perilous. Some companies do it, but they're companies that require a whole lot of other qualifications - "we only hire from Harvard and Yale" or "applicants must have ten years managing at least 150 employees".

I think the situation is basically that it’s allowed, but employers have to jump through probably more hoops than they should be required to to prove it’s fair. The Supreme Court ruled in 1971 in Griggs v. Duke Power Co. that Duke Power Co. had high school graduation and IQ test requirements for all but the lowest-level positions, the IQ requirement having been added after the Civil Rights Act of 1964 was passed and they were made to stop directly discriminating against black applicants. The court looked at promotion records and decided that the requirements weren’t really predictive of anything and served mainly to allow them to continue discriminating against black applicants, and decided that the Civil Rights Act prohibited general intelligence tests, so employers either have to prove that such tests are predictive of job success, or only use tests that are written to test job-specific abilities.

I don’t know where to find the data used in that case, but my understanding is that intelligence tests have been shown to be broadly predictive of job performance, more so than any tests written to test only “job-related” skills; intuitively, it’s often better to hire someone who can more easily learn new things than to hire someone who already has some amount of experience but has difficulty learning new skills, drawing inferences, and dealing with unexpected situations. So if you’re hiring someone, and you have two otherwise equal applicants, and one scores better on an intelligence test, it makes sense that you’d be better off hiring the one who scored higher, but this is prohibited by the Supreme Court’s interpretation of the Equal Rights Act.

Banning employers from using an effective method to choose who to hire necessarily causes economic efficiency. It’s fascinating to think about how much; a large part of why companies like to hire from top universities is that that’s where the smart students are. A large part of why so many companies are requiring college degrees for jobs that didn‘t previously require them is that it’s an effective form of cognitive selection; as more and more students go to college, fewer high-IQ students don’t go to college, and the IQ gap between those who do and those who don’t grows. I think eventually someone’s going to realize it’s possible to hire students straight out of high school on the basis of test scores and provide them with all the necessary training, skipping the whole process of making them spend $250,000 and four years of their lives experimenting with drugs and getting shwasted.

Re: Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

#26
post #8

Ignoring the not-so-thinly-veiled-advertisement. The premise is wrong. Companies optimize for a lot more than raw IQ (company fit, engineering skills, response to criticism and pressure etc.) Humans can also get better a solving problems like he presents. It's not about memorizing test cases, it is about developing heuristics and noticing patterns - something humans are actually very good at. If you practice you will…

Why "response to criticism" - is that prevalent in your corporate culture? Sounds like a great reason to walk out of an interview.

A lot of people take criticism of their work as personal attacks. They don't have the ability to separate the two. Those kinds of people are not fun to work with, particularly in a peer review situation. You don't want to hire people who will break down during code review because someone else didn't like the way they coded something.

Re: Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

#27
post #4

This post is a mischaracterization of why tech companies as basic coding questions. Or at least Microsoft, where I learned to interview and coached my own team of interviewers over several years. 1) Basic coding questions are a nice filter. If you can't remove an element from a doubly-linked list in C on a whiteboard immediately after graduating, what were you doing the last four/five years? It's like the height sign…

Could I have an example of walk though and describe the memory state? Do you mean just describing what references are in the stack and heap?

Re: Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

#28
I struggle to find the point of this article. OK, I'm somewhat being coy and perhaps somewhat dismissing it with a middlebrow but in a real sense I'm not quite sure what is being argued. Is this the developer of "Find the Mafia!"? It's not as if the "Top Tech Companies" are actually measuring IQ, so that seems to belie the point. Sure, you could say they are asking questions that you believe correlate with raw IQ if you want, I might say "citation needed" but the fact is it is not exactly what they are doing. Now, I'm not sure this particular type of puzzle is the perfect solution, or even a candidate solution. Yeah, I'm a little flummoxed.

By the way, the simpler explanation for asking question about CS theory and algorithms is that they want people that have really studied them thoroughly. I know, it's a crazy idea, ... but it just might be the answer. :)

Re: Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

#29

Earlier quoted context omitted.

I can't say I object to people who probably have access to lethal weaponry being required to have a minimum level of intelligence. But I'm not a gun advocate.

Minimum or maximum: http://abcnews.go.com/US/court-oks-barring-high-iqs-cops/sto...

Yeah, that seems like a problem. Maybe we should make it less likely that police officers who go through the training will leave.

Re: Top Tech Companies: You filter on raw IQ, here is how to do it more effectively

#30
I read the fine article and all the comments submitted here before seeing some questions that can be answered by reading a FAQ I've posted here on HN before about company hiring procedures. The last full posting of that FAQ was a while ago,

https://news.ycombinator.com/item?id=5227923

and the tl;dr of the FAQ is "If you are hiring for any kind of job in the United States, prefer a work-sample test as your hiring procedure. If you are hiring in most other parts of the world, use a work-sample test in combination with a general mental ability test."

Readers of HN have asked me to put that FAQ somewhere on the Web with a permanent link, and I am revising it for posting to my personal website. If you have suggestions for how to make the FAQ better, I'd be glad to hear them, as I have already been doing further research on company hiring procedures.

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