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Protean-A Comprehensive CD 3200/3600 Program for Nonlinear Factor Analysis

McDonald, Roderick P.
Publication Year:
Report Number:
ETS Research Memorandum
Document Type:
Page Count:
Subject/Key Words:
Computer Software, Factor Analysis, Nonlinear Models, PROTEAN


A general theory of nonlinear factor analysis has been developed, numerical methods for a number of cases of this theory have been described, and computer programs for some of these cases have been made available. The object of this Memorandum is to describe a new computer program for nonlinear factor analysis, PROTEAN (PRoduct/Polynomial ROtation TEst ANalysis), which effectively supersedes the programs previously described, in that it incorporates virtually all the work of these programs and also includes a number of new possibilities. The opportunity will be taken to revise certain earlier processing recommendations which are now believed to be not the best possible.

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