Representative Marjorie Taylor Greene hung a sign outside her Capitol office door that said “There are TWO genders: MALE & FEMALE. ‘Trust the Science!’” There are many reasons to question hanging such a sign, but given that Rep. Taylor Greene invoked science in making her assertion, I thought it might be helpful to clarify by citing some actual science. Put simply, from a scientific standpoint, Rep. Taylor Greene’s statement is patently wrong. It perpetuates a common error by conflating gender with sex. Allow me to explain how psychologists scientifically operationalize these terms.
According to the American Psychological Association (APA, 2012), sex is rooted in biology. A person’s sex is determined using observable biological criteria such as sex chromosomes, gonads, internal reproductive organs, and external genitalia (APA, 2012). Most people are classified as being either biologically male or female, although the term intersex is reserved for those with atypical combinations of biological features (APA, 2012).
Gender is related to but distinctly different from sex; it is rooted in culture, not biology. The APA (2012) defines gender as “the attitudes, feelings, and behaviors that a given culture associates with a person’s biological sex” (p. 11). Gender conformity occurs when people abide by culturally-derived gender roles (APA, 2012). Resisting gender roles (i.e., gender nonconformity) can have significant social consequences—pro and con, depending on circumstances.
Gender identity refers to how one understands and experiences one’s own gender. It involves a person’s psychological sense of being male, female, or neither (APA, 2012). Those who identify as transgender feel that their gender identity doesn’t match their biological sex or the gender they were assigned at birth; in some cases they don’t feel they fit into into either the male or female gender categories (APA, 2012; Moleiro & Pinto, 2015). How people live out their gender identities in everyday life (in terms of how they dress, behave, and express themselves) constitutes their gender expression (APA, 2012; Drescher, 2014).
“Male” and “female” are the most common gender identities in Western culture; they form a dualistic way of thinking about gender that often informs the identity options that people feel are available to them (Prentice & Carranza, 2002). Anyone, regardless of biological sex, can closely adhere to culturally-constructed notions of “maleness” or “femaleness” by dressing, talking, and taking interest in activities stereotypically associated with traditional male or female gender identities. However, many people think “outside the box” when it comes to gender, constructing identities for themselves that move beyond the male-female binary. For examples, explore lists of famous “gender benders” from Oxygen, Vogue, More, and The Cut (not to mention Mr. and Mrs. Potato Head, whose evolving gender identities made headlines this week).
Whether society approves of these identities or not, the science on whether there are more than two genders is clear; there are as many possible gender identities as there are people psychologically forming identities. Rep. Taylor Greene’s insistence that there are just two genders merely reflects Western culture’s longstanding tradition of only recognizing “male” and “female” gender identities as “normal.” However, if we are to “trust the science” (as Rep. Taylor Greene’s recommends), then the first thing we need to do is stop mixing up biological sex and gender identity. The former may be constrained by biology, but the latter is only constrained by our imaginations.
American Psychological Association. (2012). Guidelines for psychological practice with lesbian, gay, and bisexual clients. American Psychologist, 67(1), 10-42. https://doi.org/10.1037/a0024659
Drescher, J. (2014). Treatment of lesbian, gay, bisexual, and transgender patients. In R. E. Hales, S. C. Yudofsky, & L. W. Roberts (Eds.), The American Psychiatric Publishing textbook of psychiatry (6th ed., pp. 1293-1318). American Psychiatric Publishing.
Moleiro, C., & Pinto, N. (2015). Sexual orientation and gender identity: Review of concepts, controversies and their relation to psychopathology classification systems. Frontiers in Psychology, 6.
Prentice, D. A., & Carranza, E. (2002). What women should be, shouldn't be, are allowed to be, and don't have to be: The contents of prescriptive gender stereotypes. Psychology of Women Quarterly, 26(4), 269-281. https://doi.org/10.1111/1471-6402.t01-1-00066