# [ExI] confounding

William Flynn Wallace foozler83 at gmail.com
Wed Sep 21 00:06:13 UTC 2016

```Yeah, I knew you would know all about it, but I am interested in what the
hard science people think and what their term(s) are.  They have to control
for variables, so they must have some kind of vocabulary for it.

bill w

On Tue, Sep 20, 2016 at 7:01 PM, Henry Rivera <hrivera at alumni.virginia.edu>
wrote:

> So it's this:
> In statistics, a *confounding variable* (also *confounding factor*, a
> *confound*, a *lurking variable* or a *confounder*) is an extraneous
> variable <https://en.wikipedia.org/wiki/Extraneous_variable> in a statistical
> model <https://en.wikipedia.org/wiki/Statistical_model> that correlates
> <https://en.wikipedia.org/wiki/Correlate> (directly or inversely) with
> both the dependent variable
> <https://en.wikipedia.org/wiki/Dependent_variable> and the independent
> variable <https://en.wikipedia.org/wiki/Independent_variable>, in a way
> that "explains away" some or all of the correlation between these two
> variables.
> -https://en.wikipedia.org/wiki/Confounding
>
> I've only heard about it in the context of experiments and statistics.
> While Spike is a Renaissance man, he still may not have been exposed to
> -Henry
>
> On Tue, Sep 20, 2016 at 7:19 PM, William Flynn Wallace <
> foozler83 at gmail.com> wrote:
>
>> If you are familiar with this term you may stop reading now.
>>
>> Spike and I went back and forth a few times, and it turns out that he has
>> not heard of it.  Certainly he knows the idea:
>>
>> Add two variables to a situation and no matter what happens you can't
>> tell the effect of one from the other.
>>
>> Psych uses confounding to describe this, but I'd like to find out who
>> else does, or if they don't, do they have a word for the idea.
>>
>> bill w
>>
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>>
>
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