In 1971, she created the "Bem Sex-Role Inventory to measure how well an individual conformed to a traditional gender role, characterizing those tested as having masculine, feminine, androgynous, or undifferentiated personality. She believed that through gender-schematic processing, a person spontaneously sorts attributes and behaviors into masculine and feminine categories, and that therefore individuals processes information and regulate their behavior based on whatever definitions of "femininity and "masculinity their culture provides.[50]