Bearman and Brueckner (2001) found that teens who made a public virginity-until-marriage pledge became likely to remain sexually abstinent than similar teens who do not make the pledge.

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Explanation:

Bearman and Brueckner (2001) performed a survey and they found that teens who made a public virginity-until-marriage pledge became more likely to remain sexually abstinent than similar teens who do not make the pledge.

This was because they would strive to follow through to the public pledges they made whereas those who didn’t had no obligation to fulfilling any pledge.

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.