The science of adapting products to better fit human use. This is potentially a very involved process. Consider the variability between people. Identify some human anatomical dimensions relating to an effects pedal. For your group, determine the mean and standard deviation of the nominal diameter of the index finger and thumb on your dominant hands measured at the joint between the distal and median phalanx.
Function follows form.
More impacts of form. Color and finish. For example, color preferences. In order to determine an average response to these elements, it is important to employ some sort of statistical sampling technique to get a sense of average consumer responses. Based on your discussions, identify three issues that you think would benefit from using focus groups to collect information.