This must have come up before, but i did not find it in the help archive.

in a mixed effects model fitted with lmer, i have an interaction term
between two factors, each with more than two levels and would like to
estimate and test  various contrasts between different combinations of the
factor levels. i need the point estimates and the standard errors for these
many contrasts.  does anyone know if there is a function that calculates the
standard errors of contrasts?

thank you

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