“…The use of techniques such as interviews, focus groups, behavioral observation, ethnography and other such qualitative measures plays an important part of the process for determining and documenting consumer needs [ 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. In addition, quantitative measures of consumer understanding, attitudes, behaviors, and emotions as they relate to products provide additional information that may be critical to discerning potential product requirements [ 34 , 35 , 36 , 37 , 38 ].…”