In a 1983 study by Paula Nurius, which included 689 subjects (most of whom were students at various universities in the United States taking psychology or sociology classes), the two-dimensional fantasizing and eroticism scale was used to measure sexual orientation. Based on the results, respondents were given a score ranging from 0 to 100 for hetero-eroticism and from 0 to 100 for homo-eroticism. Respondents who scored lower than 10 on both were labeled "asexual". This consisted of 5% of the males and 10% of the females. Results showed that asexuals reported much lower frequency and desired frequency of a variety of sexual activities including having multiple partners, anal sexual activities, having sexual encounters in a variety of locations, and autoerotic activities.