US Census data

Lists of first names of respondents from the 1990 US Census were retrieved from the census administration website [51] as comma-delimited (.CSV) files. Each name in each list had been previously identified as either male or female, based on the self-identification of sex in the original census. A count of the number of respondents with each first name was also included in the Census data. We then combined the lists of female- and male-identified names into a single file, along with the counts of numbers of respondents with each first name. Each name was then given a weighted score for each gender based on the number of female and male respondents with that name.