1st positive of gender bias
There are ways to reduce gender bias
Research can be conducted to emphasise the value of women rather than implying inferiority (e.g Cornwell et al found that women were better at learning than men because they are attentive, flexible, organised)
Practical applications can be created from gender differences research to reduce inequality across men and women. (e.g Eagly created leadership training to encourage more women into leadership roles based on findings that women make less effective leaders).
This means research is valuable as it challenges harmful stereotypes