According to the longitudinal study of Mills College graduates by Ravenna Helson,middle-aged women increased more than their male partners in

Question

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The question asks which of the three traits (competence, confidence, and independence) middle-aged women increased more than their male partners in, and the correct answer is all three. This is supported by the mention of Ravenna Helson's study of Mills College graduates, which found that middle-aged women showed greater gains in "leadership, competence, and independence" compared to men. Therefore, the answer is D, all of these.

According to the Longitudinal Study of Mills College Graduates by Ravenna