Measuring homonegativity: psychometric analysis of Herek's attitudes toward lesbians and gay men scale (ATLG) in Colombia, South America.

The empirical study of negative attitudes toward gay and lesbian people (homonegativity) is a way to understand the reason for its prevalence. The aim of this study was to examine the psychometric properties of a Spanish version of the Attitudes Toward Lesbians and gay men scale (ATLG). A total of 359 undergraduate students were recruited from two different cities in Colombia, South America. Participants' attitudes toward gays and lesbian people were assessed using the ATLG Scale and the Homophobia Scale; anxiety was measured using a short version of the Zung Self-Rating Anxiety Scale. Internal consistency analyses have shown that the ATLG Scale is a reliable measure of homonegativity in a Colombian sample. In addition, principal components analyses, as well as convergent and divergent validity analyses have confirmed that the ATLG Scale is a valid and reliable measure of homonegativity in the Colombian context and support its use as a research instrument.