[R] Analyzing dissimilarity ratings with Multidimensional Scaling

[Mike Marchywka]

> My first goal in the analysis process is to print a perceptual map where to
> place the pairs of
> audio-visual stimuli (e.g. WD-WD, MT-DL, etc.) and see how far the trials
> are from each other.

I've been using heatmap for stuff like this.
You can get a nice picture this way and get quick visual
survey and dendrograms, 

xm<-scan(file="avm.txt")
str(xm)
heatmap(xm)
heatmap(matrix(xm,6,6))

I ran the above on your data and it visually looks
like there could be interesting patterns to test.