Date: Thu, 15 Jul 2010 06:53:06 -0700
Reply-To: Bruce Weaver <email@example.com>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Bruce Weaver <firstname.lastname@example.org>
Subject: Re: How are Polynomial contrasts computed
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William Dudley WNDUDLEY wrote:
> I am struggling with a repeated measures model in which I have run growth
> curve analyses AND repeated measures ANOVA.
> In both the growth curve model and ANOVA model I obtain significant linear
> and quadratic terms.
> I understand what the terms mean in the growth model but I do not
> how the contrasts are arrived at in the ANOVA
> Can someone enlighten me?
If you're asking where the sums of squares for the linear and quadratic
contrasts come from, they are linear combinations of the means, with
coefficients taken from a table of Orthogonal Polynomial Coefficients, like
But I'm not sure if this is what you are driving at.
"When all else fails, RTFM."
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