Studies* have shown
that women are (on average†) less good at reverse parking than men because they have poorer spatial awareness. This also applies to map reading and sense of direction in general.

Conversely, women are much better than men (on average†) at multitasking, which is why my girlfriend can watch telly, read a book, knit a jumper and speak coherently to me on the phone at the same time, but when I as much as glance at the computer when I'm on the phone to her she immediately knows that I'm not paying attention.

* I can't be arsed looking up the references

† because obviously this is not true for all women and all men, just a majority.
( K2k6 has a proper job these days, Sun 27 Dec 2009, 21:23, Reply)