Sandra Bem tested her ideas about androgyny by creating a psychological test, which is known as the Bem Sex Role Inventory (BSRI). The test includes 20 masculine traits, 20 feminine traits, and 20 neutral items (distractors). When completing the inventory, an individual has to rate themselves on each trait using a 7-point Likert scale, where 1 means never or almost never true and 7 means almost always true. The scores for masculine and feminine traits calculated provide a score for femininity, masculinity and androgyny.