Specification in terms of super's theory on occupation goal states that it is the stage at which a person tends to focus and get along with the path of educational experience to gain his/her aim of career.
According to the situation mentioned in the question, Shelby is trying to achieve educational experience through psychology program as she wants to pursue her work in abused children's field.Thus Shelby is the specification level.
The category of the U.S. population in which women do most of the housework is married people who have children. This has been true for thousands of years because women are the caretakers and men mostly go to work. This should stop because women are equal to men and they should both be able to have a job.