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To control order effects in questionnaires containing paired comparisons, Ross (1934) described an optimal ordering of the pairings. The functions in this package construct the optimally spaced, balanced ordering of pairings. They can also create subsets of the pairs for either a matrixsampling design or a fully incomplete design.
Package details 


Author  Andrew Zieffler <zief002@umn.edu>, Stacy Karl <karlx028@umn.edu>, and Julio Cabrera <cabre031@umn.edu> 
Maintainer  Andrew Zieffler <zief002@umn.edu> 
License  GPL2 
Version  1.0 
Package repository  View on RForge 
Installation 
Install the latest version of this package by entering the following in R:

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