Applies the two standard algorithms to pre-flag Q-sorts automatically, for posterior calculation of the statement scores.
number of statements in the study.
These are the two standard criteria for automatic flagging used in Q method analysis:
Q-sorts which factor loading is higher than the threshold for p-value < 0.05, and
Q-sorts which square loading is higher than the sum of square loadings of the same Q-sort in all other factors.
Returns a logical matrix with Q-sorts as rows, and factors as columns.
Brown, S. R., 1980 Political subjectivity: Applications of Q methodology in political science, New Haven, CT: Yale University Press.
Van Exel, J., de Graaf, G., Rietveld, P., 2011. "'I can do perfectly well without a car!'" Transportation 38, 383-407 (Page 388, footnote 8).
See further references on the methodology in