Comparing self-categorisation approaches to measuring gender identity
This article compares two different measures of gender identity. Drawing on an online survey conducted with a representative sample of Americans that included both a single bipolar scale and separate masculinity and femininity scales, we compare how the same people respond depending on how gender identity is measured. The results of validation tests suggest that a single bipolar scale performs just as well in differentiating among those with sex-typical gender identities but separate masculinity and femininity scales are needed for studies investigating the political behaviour and preferences of those with sex-atypical identities.<br /><br />Key messages<br /><ul><li>Self-categorization is the appropriate way of capturing a gendered sense of self.</li><br /><li>Using separate femininity and masculinity scales has theoretical advantages.</li><br /><li>A single bipolar scale works as well as separate masculinity and femininity scales for differentiating those with sex typical gender identities.</li><br /><li>Separate femininity and masculinity scales are optimal for measuring sex atypical gender identities.</li></ul>