Thurscal: A Program for Interval Scaling Using Paired Comparisons or Paired Comparison Treatment of Complete Ranks Under Case III Assumptions
John W. Bradford, Chester A. Schriesheim · Educational and Psychological Measurement · 1990
A microcomputer program which performs interval scaling under Thurstone's Case III is reported. Data handled may be from pair comparison procedures or rank orderings (which are converted to their implied pair comparisons). The output includes intermediate proportions (for scaling Case V by hand, if desired), as well as computed scale values and standard deviations for each stimulus.