a method of classifying sexual orientation on the basis of seven factors: sexual fantasy, sexual attraction, sexual behavior, emotional attraction, social attraction, social behavior, and self-identity. Each of these factors is evaluated in three time periods: past, present, and ideal future. Thus, a person’s sexual orientation is described in terms of positions in a 3 × 7 grid. [developed by U.S. psychiatrist Fritz Klein (1932–2006), who considered the Kinsey Scale of sexual orientation to be simplistic]