Bem was an American psychologist known for her works in androgyny and gender studies. Bem and her husband Daryl Bem advocated egalitarian marriage. The husband-wife team became highly demanded as speakers on the negative impacts of sex role stereotypes on individuals and society. At the time, there was a lack of empirical evidence to support their assertions because this was uncharted territory, and so Sandra Bem became very interested and determined to gather data that would support the detrimental and limiting effects of traditional sex roles. In her early career, she was heavily involved in women's liberation movement, and she did work on sex-biased job advertising. Her involvement led to being a contributor to landmark cases concerning recruitment of women in the work force against companies such as AT&T and the Pittsburgh Press.