I started to use one potential workaround for ?unit-wise? missing data, but it begs the obvious question asked below. 

About the data set:
2 x 7 x 4 IVs (= 56conditions) x 14 subjects (= 784 cells) x multiple responses per subject per condition (6228 responses total). 

The 18-20 DVs mentioned previously are probably only 10 or 12 variables to be tested in repeated measures ANOVAs.  Still, one issue was that in the six missing cells, data of all dependent variables are missing.  This is essentially ?unit-wise? missing data, isn?t it?  I arranged three IVs, the subject number, and one DV into five columns; then, I ran Amelia to impute six missing datum x 5.  Is there a way to do the imputations on all DVs at once, and thereby avoid splitting the dataset and repeating the procedures? 


Deric Wisleder