I've concluded that I don't have enough data to be sure but wouldn't be surprised if it's a mixture of all three - testosterone levels correlating with assertiveness/aggressiveness seems sufficient to suggest biology may play a part, and I've definitely seen the latter two happen.
I don't, however, think it's contradictory to say that "women are less likely to interrupt back" does not automatically mean that the person interrupting them is therefore sexist, even though the results of the behaviour end up impacting a higher percentage of women than men - they may simply be oblivious to the consequences, even if from the sounds of it in this case that wasn't it.
> So the mistake may not have been gendered on his part, and I'd suggest you think hard about whether you're engaging in benevolent sexism by believing only women can be quieter and more in danger of interrupted.
Aren't these contradictory if you're first saying that women are less likely to interrupt back and then saying it might be in my head?
Either way, your overall point is sound, but she TRIED to interrupt him several time, whereas none of the other panelists had to even try. I'm always questioning myself, but I don't think I'm projecting that interpretation.
I do however agree that obviously quieter people will have less airtime than more extrovert people, regardless of gender.
I think the question is: Do we believe that this is inherent in gender (nature), nurtured in our culture (women's upbringing), or enforced by sexism after the fact (imposed by men as a result of culture/nurture)?
If your hinted statistics are true, then one statement above must be true, unless I excluded an option.