What is levity of disposition for a female in ancient Rome who shall remain in guardianship?

Men in ancient Rome observed that women and girls often had very lighthearted and frivolous personalities, such that it was difficult for them to think seriously about important matters, and hence, to make responsible decisions for themselves. The men therefore believed that it was in the best interests of women and girls that they should remain under the authority of their fathers until they were married, and under the authority of their husbands once they were married, to ensure that they always had someone to chaperone them and thus prevent them from doing anything irresponsible or self-destructive as a result of them not properly considering the consequences of their actions.