Re: independent variance

Alberto wrote:
<<I'm not sure about the meaning
of "independent" in the following context.


"What the friendship research has shown is that such talk is especially

likely to take place in the context of the intimate play and
conversation of
friends, and that the experience of shared pretence between friends
contributes independent variance to a wide range of later
socio-cognitive
outcomes". >>

"contributes independent variance" basically means that a particular
variable (in this case, shared pretence) is important even after we
have already accounted for the effect of other factors (e.g. sex, age,
amount of alcohol consumed).

An example of NOT contributing independent variance would be :
If we know the length of a rectangle, and we know the width a
rectangle, and we have fit the correct model, adding the area of the
rectangle as another variable wouldn't contribute anything (since area
= length * width)

Can't help you with the Italian phrasing.

.

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