It was thought that the pupils would dilate (get larger) in response to sexual interest in the image shown. During this test, subjects were made to view images ranging from innocuous to pornographic while their pupil size was recorded. In the 1950s and 1960s, anti-gay sentiment was rampant (read: Gay Discrimination and Stigma and How to Cope) and a 'homosexuality test' was developed in Canada.

But are 'Am I Gay?' quizzes of any value? Is an 'Am I Gay?' test accurate? Am I Gay Test Some people wonder, 'Am I gay?' and ' How do you know if you are gay?' and sometimes they follow this up by taking something like an 'Am I Gay Quiz' that might be found online.