[R] part or semi-partial correlation Is it possible to conduct part (also called semi-partial correlation)
with R. The help.search produces no results and there is also nothing
into the archive, well one post asking what is part correlation. Just
quickly from Field [Discovering statistics using spss]:

"When we do a partial correlation between two variables, we control
for the effect of a third variable. Specifically, the effect that the
third variable has on BOTH variables in the correlation is controlled.
In a semi-partial correlation we control for the effect that the third
variable has on only one of the variables in the correlation."

Apologies if it is a trivial question. Thanks.

-- 
yianni

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