<p>So you're basically asking what are the causes of interpersonal differences in intelligence as typically measured by standardised psychometric tests. This question forms the basis for a large proportion of the literature on intelligence. For example see a journal like <em>Intelligence</em>.</p>

<p>For a review you could read  <a href="http://www.gifted.uconn.edu/siegle/research/correlation/intelligence.pdf">Intelligence: Knowns and Unknowns</a></p>

<p>A few quick observations include that </p>

<ul>
<li>Genetics is a major cause</li>
<li>Environmental causes are often less well understood</li>
<li>Head start and related programs designed to increase intelligence typically lead to limited long term gains</li>
<li>Severe environmental factors will negatively affect intelligence</li>
</ul>

CC BY-SA 3.0
2014-07-19T07:13:41.117Z
2014-07-19T13:29:00.450Z
2014-07-19T13:29:00.450Z
Jeromy Anglim
<p>Is / are there any scientific studies on factors which affect the general intelligence (g) factor?</p>

<p>I did a Google search, but could not find any academic papers on the topic.</p>

<intelligence>
What factors affect the g factor?
Guest
# What factors affect the g factor?

(Asked by: username_0 on 2014-07-18)

Is / are there any scientific studies on factors which affect the general intelligence (g) factor?

I did a Google search, but could not find any academic papers on the topic.

**Tags:** intelligence


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## 1 answers

### Answer by username_1 on 2014-07-19. Score: 7

So you're basically asking what are the causes of interpersonal differences in intelligence as typically measured by standardised psychometric tests. This question forms the basis for a large proportion of the literature on intelligence. For example see a journal like *Intelligence*.

For a review you could read [Intelligence: Knowns and Unknowns](http://www.gifted.uconn.edu/siegle/research/correlation/intelligence.pdf)

A few quick observations include that

* Genetics is a major cause
* Environmental causes are often less well understood
* Head start and related programs designed to increase intelligence typically lead to limited long term gains
* Severe environmental factors will negatively affect intelligence


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