I think the largest reason for lower reports is social pressure and the flexibility applied when being unhappy with your own orientation due to that pressure “I am not gay. I just like to experiment!” I believe that this partly causes the relatively large amount of “not completely straight” people in more precise studies.
Anyway, this is a lot of guess work. Mainly I had this presumption, because a gay man I know stated “I can ask 10 men on the street and one will join me” and given that it sounded like he tried it a few times, I do believe him. So my starting position is highly anecdotal and not very scientific.
Canadian Health Survey self-reported gay as 1% in 2003 to 1.7% in 2014. Bisexuality was 0.7% in 2003 and had doubled by 2014.
I think the largest reason for lower reports is social pressure and the flexibility applied when being unhappy with your own orientation due to that pressure “I am not gay. I just like to experiment!” I believe that this partly causes the relatively large amount of “not completely straight” people in more precise studies.
Anyway, this is a lot of guess work. Mainly I had this presumption, because a gay man I know stated “I can ask 10 men on the street and one will join me” and given that it sounded like he tried it a few times, I do believe him. So my starting position is highly anecdotal and not very scientific.