I suspect things have changed somewhat since 1928, but it likely boils down to something quite normal, like, boys are interested in different things to women. Which is surely just an evolutionary thing.

Its also likely to be a direct reflection, back then, of the expectations of that era.

The social construct is such an abstract nonexistent idea that many think is the way it should be, but it that just because we have the ability to reason etc...

Look at where we are holistically, are we really better off today if you look at every comparable data point across time?