Answer:
Leta Stetter Hollingworth who was one of the earliest psychologists to champion women's issues.
Step-by-step explanation:
In earlier days women's wear discriminated on the basis of sex. They were not allowed to live in freedom. Also did not had the freedom of expression. The thinking and devar psychology was a mystery until Leta Stetter Hollingworth didn't research about it.
She worked with his fellow in this research and gave worthy conclusion to this. Psychology also helps understanding the mental level of a person especially women.