Janet Hyde, a professor of psychology and women's studies at the University of Wisconsin, Madison, has found that it doesn't lead to less intimacy in marriage when wives hold paid jobs.

WSJ: The Sex-Housework Link

Psychologist Amanda Diekman and her team surveyed 333 introductory psychology students (193 women and 140 men) to find out about their career interests, their abilities in different academic areas, and the importance they placed on certain personal objectives.

FORBES: Why Women Shun Science Careers

According to their work published in Psychology Today in 1974 these women operating in male hierarchies sought to preserve their rare turf by thwarting attempts of other women who sought to rise as they had done.

FORBES: Taking the Sting out of 'Queen Bees' Who May Be Out to Get You

Dr Jacky Boivin, from the School of Psychology at Cardiff University, studied 71 women with an average age of 30.

BBC: Passionate sex aids pregnancy

Citing a study published in the Spanish Journal of Psychology, Frankel and Frohlinger note that women are more likely to feel guilty because they are socialized to be considerate of the needs and feelings of others.

FORBES: Women in the Workplace are Just Too Nice

Ruth Striegel-Moore, head of the psychology department at Wesleyan University, has done several studies involving the prevalence of eating disorders among women of color.

NPR: Roundtable: Black Women and Body Image

When men outnumber women, females marry younger and the age gap between spouses grows, the study, published in the journal Evolutionary Psychology, says.

FORBES: All The Single Ladies: Head West