Not really. Just going by the model, I would predict that if my dad was irrational, it would be because of a refusal to update beliefs, and if my mom was irrational, it would be because of not clearly defining her position.

However, my dad likes arguing and changing his mind, and I can't infer from my mother's equanimity that her own beliefs aren't specific.

I can predict that if I asked them, they'd agree that updating beliefs is a private matter, independent of the social details (?) of an argument.