The joint representation of constructs and elements in repertory grid data by component analysis: Slater's INGRID is not the best solution
JOURNAL OF CONSTRUCTIVIST PSYCHOLOGY | TAYLOR & FRANCIS INC | Published : 2004
The dominant method of analyzing repertory grid data in order to produce a joint spatial representation of constructs and elements has been Slater's INGRID procedure, often labeled "principal components" but more accurately described as a singular-value-decomposition. This approach also involves centering the grid about construct means. In this article, it is shown that this removes a relationship between construct means and first component loadings for constructs. It is also shown, however, that a strong relationship between element means and element first component loadings remains. Ways of overcoming this problem are examined.