Earlier quoted context omitted.
Sure, here is a concrete example of a linked document that supports his position http://www.bradley.edu/dotAsset/165918.pdf and the references therein. In particular, > sex differences in personality traits can be detected in early childhood [..] and remain fairly constant across adulthood [..] The effects of these sex differences lead to predictable differences in men’s and women’s leisure behaviors, occupational pr…
Occupational preferences are not the subject of the document, though. The subject is occupational qualification . The specific things he criticizes Google for doing are actions taken once minority candidates have already applied for a job, that is, once they have already expressed interest in the occupation they're applying for: they're about reducing unconscious bias in hiring, reducing the false negative rate in Go…
No, he talks about both:
> I’m simply stating that the distribution of preferences and abilities of men and women differ in part due to biological causes and that these differences may explain why we don’t see equal representation of women in tech and leadership.
and
> These two differences in part explain why women relatively prefer jobs in social or artistic areas.
(emphasis mine in both cases). And that linked document does support that claim of his.
(Again, I'm not defending all his claims; just that one.)