Even though this study seems kinda doubtworthy, that's what I've said for over 3 decades now. The louder they scream "evil!" The more "evil" they themselves are.

Maybe they were just thinking of fishing together

IIRC, this hasn't been debunked per se, but it was a very small, very limited study, and doesn't really do a great job of explaining homophobia in a broader population. (I mean, you're talking about 64 people in total; depending on your inclusion criteria, that could be a meaningless sample size.) Penile plethysmography is a proxy for sexual arousal; it's useful in some instances--like predicting whether or not someone will commit more sexual offenses in the future--but isn't even that great in those instances. If I remember correctly, there's strong evidence that disgust is a trait strongly associated with conservatism, and homophobia is a an extreme disgust reaction.

FWIW, I was casually--but quite virulently--homophobic when I was younger. I'd been raised in a very conservative, evangelical religious group, and I believed all the bullshit that I'd heard about gay people. That changed once I lost religion, and actually met people that were gay. That, of course, is only anecdotal evidence, and does assume that I'm neither gay nor bisexual (and I don't believe that I am), but it fits with what I've seen from conservative thought.

"You fear and reject what you are"

Maybe this explains that odd "prayer" group hug of Republicans in the Capitol that was posted these days ;-)

I could also imagine that the causality is (partly) the other way around. Demonizing homosexuality makes it a taboo for them and taboos are the base for all kinds of fetishes.

Waitwaitwait... The homophobic men displaying arousal: Yeah, sure, of course.

But NONE of the non-homophobic men got even a little ruffled? That's the real surprise here.

Typical of these evil, woke scientists to try to make good upstanding citizens gay with their evil sciencing. Good thing President Trump is putting an end to all this.

As someone that used to be homophobic in highschool, I can confirm this is the case. My dad is super homophobic yet all of his kids, including myself, are at least bisexual.

So interesting thing here: both groups were aroused at heterosexual and lesbian stimuli.

The homophobic ones responded to the homosexual stimuli.

The guys were bi. Sort of explains why they argue "everyone chooses to be gay or straight." Because they have decided they have to.

This also explains the more-frequent-than-i-enjoy conversation about how "no, there really isn't a celebrity I'd go gay for."

i literally know people like this

So everyone who calls me the F word wants to fuck me? Gross.

Homophobes: resist those evil urges, don't give it to the gay sex, you can do it just say no...

The rest of us: uh, who's gonna tell them

How did they measure "penile circumference" over time? Is there a guy standing next to them with a tape measure?

It's always important in science to do the experiment or study, even if you're pretty sure you already know the answer.

Sometimes, the result will be surprisingly counter-intuitive. And other times, like in this study, it confirms what seems blatantly obvious.

What could it possibly mean when a man who identifies as heterosexual feels threatened by the mere existence of homosexual men? What could it mean???

Based study