If there is a group of people who perform jobs better than another group, yes, they should be paid more. Last I checked, there's no peer reviewed studies about

If there is a group of people who perform jobs better than another group, yes, they should be paid more. Last I checked, there's no peer reviewed studies about effectiveness/ability in nebulous characteristics such as "better with kids" and "caring". However, there are tests that measure your physical aptitude/upper body strength. Considering that physical standards are different between genders[0] why would they expect the same pay? [0] https://en.wikipedia.org/wiki/United_States_Army_Physical_Fitness_Test#Standards https://en.wikipedia.org/wiki/United_States_Army_Physical_Fi...