Etic Research
Etic research is research from a specific culture which is then applied to other cultures to find universal laws, giving the studies universality.
It's possible that here are lots of these. All humans have basically the same physiology and many behaviours are found in all cultures, e.g. language, attachment formation, aggression.
However, because studies have to take samples of the population, it's difficult to generalise the findings to all cultures. If researches do this, they could be guilty of bias is the form of an imposed etic.