The pattern of responses for the task-specific rating scales was examined in an effort to gain some insight regarding what may account for the unexpected effects of EOUnum and QUALnum on QUALnon (see Table 5A.10). One of the characteristics of these scales is that they attempt to incorporate the infeasible case as one of their endpoints. For example, the difficult end of the EOU scale has "impossible" as its anchoring adjective. Similarly, QUAL has "unacceptable(or non-existent)" at the low end of the scale.