although these are frequently limited in diversity of gender and sexual orientation of the subjects. Integration of sexual orientation with sociocultural identity may be a challenge for LGBT individuals. Individuals may or may not consider their sexual orientation to define their sexual identity, as they may experience various degrees of fluidity of sexuality, or may simply identify more strongly with another aspect of their identity such as family role. American culture puts a great emphasis on individual attributes, and views the self as unchangeable and constant. In contrast, East Asian cultures put a great emphasis on a person's social role within social hierarchies, and view the self as fluid and malleable. These differing cultural perspectives have many implications on cognition of the self, including perception of sexual orientation. Language Translation is a major obstacle when comparing different cultures. Many English terms lack equivalents in other languages, while concepts and words from other languages fail to be reflected in the English language. Translation and vocabulary obstacles are not limited to the English language. Language can force individuals to identify with a label that may or may not accurately reflect their true sexual orientation. Language can also be used to signal sexual orientation to others. The meaning of words referencing categories of sexual orientation are negotiated in the mass media in relation to social organization. New words may be brought into use to describe new terms or better describe complex interpretations of sexual orientation. Other words may pick up new layers or meaning. For example, the heterosexual Spanish terms marido and mujer for "husband" and "wife", respectively, have recently been replaced in Spain by the gender-neutral terms cónyuges or consortes meaning "spouses". Perceptions One person may presume knowledge of another person's sexual orientation based upon perceived characteristics, such as appearance, clothing, voice (c.f. Gay male speech), and accompaniment by and behavior with other people. The attempt to detect sexual orientation in social situations is sometimes colloquially known as gaydar; some studies have found that guesses based on face photos perform better than chance. 2015 research suggests that "gaydar" is an alternate label for using LGBT stereotypes to infer orientation, and that face-shape is not an accurate indication of orientation. Perceived sexual orientation may affect how a person is treated. For instance, in the United States, the FBI reported that 15.6% of hate crimes reported to police in 2004 were "because of a