Just listening to a Peterson talk with Shapiro - episode 48 of Peterson's podcast.
At about 10mins in he brings up the personality model and differences and alleged bias, from memory this is what he said:
He knows the gender difference literature, it's solid
The Big 5 personality model/traits is well established over 30 years, not questioned. All based on empirical data and statistics, no ideological axe to grind with the big 5
Obvious question when model is established is do the sexes differ in personality?
Answer is yes, not massively different but not inconsequential. You can separate men and women with 75% accuracy
Next obvious question is are those differences caused by nature or nurture?
Let's test it, by going around the world, look at cultures and rank by gender equality of social policies.
Hypothesis: if gender differences decrease among more egalitarian societies then nurture is the biggest influence
That's exactly the opposite of what was found, repeatedly.
This is "mainstream science", the relevant studies have "thousands of citations"
"Average humanities paper has zero citations"
Addressing bias: "how do you know you can trust someones judgement about a fact? If the fact emerges despite their ideological background/presupposition
It's well known that social sciences/humanities are Left Wing dominated. No/very few conservatives amongst social psychologists = left wing bias.
It was these social scientists that came up with the data for the gender differences being bigger in more equal Countries.
They wanted to prove that gender differences got smaller as equality increased.
Scandinavia is still pushing the nurture element harder and harder in order to minimise the differences.
Maybe you get the opposite effect and the kids rebel.
Do you really want the State to have this much influence over your children?
I think this is the issue with the whole "bias" claims.
I don't have an ideological position that is firmly entrenched. Until last year I never really gave nature vs nurture much thought. I consider myself pretty left wing but like a lot of people I've been alienated by the PC/social justice authoritarian behaviour of todays far left.
People like Peterson do a far better and more compelling job of convincing me than random unfounded claims of "bias!"
The documentary I linked earlier, the whole series in fact, interviews both gender/social scientists and psychologists etc.
Only one side comes out of that series with any credibility.
The last episode which explored whether intersex babies could have their sex decided for them destroys utterly, like literally drops 10 nuclear bombs, the social science idea that gender is learnt. It is a must watch.
jordanbpeterson.com/podcasts/48-ben-shapiro/
Relevant part is 10mins to 15mins