4 We then constructed a number of tuples that should not display a strong modification effect.
in order to insure that any atypical rating we obtained on the distorted tuples could not be explained away by characteristics of m or h alone (rather than by their combination), for each distorted tuple we constructed a few more tuples with the same h and c but a different m, that we did not expect to be strongly distorting (e.g., plastic, bottle, drinkware ).