correlational

But, as LS points out, "The results are correlational, meaning there's no way to know whether your tendency to pay attention to others influences your political beliefs or whether political beliefs change behavior."

Study: Liberals, conservatives differ on following eyes 2010

This is not causational, and you’ll be hard-pressed to even call it correlational.

My response to Farley on Freakonomics- Should prostitution be Decriminalized? « Bound, Not Gagged 2008

Other studies concurred, but all had one thing in common: They were all correlational, meaning researchers compared separate groups of people with different alcohol consumption habits.

Livescience.com 2010

Now those findings are correlational, meaning that it’s perfectly plausible that poor sleep is the result of these other problems, rather than the cause.

The surprising thing teachers want from parents -- Willingham 2010

Robin also mentions some correlational studies but in our discussions he never linked to them.

Breast Cancer: a Hansonian Tale, Arnold Kling | EconLog | Library of Economics and Liberty 2009

Is there a single correlational study that has satisfactorily removed confounding variables?

Breast Cancer: a Hansonian Tale, Arnold Kling | EconLog | Library of Economics and Liberty 2009

Because adoption and twin studies that seek to account for trait variation in terms of genetic and environmental variation are always correlational, they reveal nothing about the causes of the appearance of the traits.

8 Surprising Facts About Parenting, Genes and What Really Makes Us Who We Are 2011

Aarnoutse & van Leeuwe (1998) carried out a study to determine the degree to which reading comprehension, vocabulary, reading pleasure, and reading frequency can be predicted by earlier measures of the same variables and the degree to which path models and common – factor models explain the correlational structure of the development of these four aspects of reading.

Motivation for Learning Reading Skill « Literacy Articles « Articles « Literacy News 2009

It's difficult to know when looking at a correlational study like this one whether it's just a correlation or an effect, says Duke endocrinologist Susan Spratt.

Increasing muscle mass may lower type 2 diabetes risk 2011

Researchers have tried many times to link the two but “have not even provided convincing correlational data,” let alone causal links.

2009 February 04 « One-Minute Book Reviews 2009