Male artists dominate galleries. Is it because 'women don't paint very well,' or just discrimination?

In the National Gallery of Australia, only 25% of the Australian art collection is work by women.

This is far better than the international standard where roughly 90% of all artworks exhibited in major collections are by men. The most expensive by a female artist—Georgia O'Keeffe's Jimson Weed/White Flower No. 1—does not even rank among the 100 most expensive paintings ever sold.

Why is women's art valued so much less than art by men?

Some economists have suggested the greater burden of child rearing and other domestic duties means women have had fewer opportunities to succeed in the .

Others have blamed the "quality" of women's art. In 2013, German painter Georg Baselitz said "Women don't paint very well. It's a fact. The market doesn't lie."

One of these vases was painted by a woman; the other by a man. Can you guess which is which? Credit: B van der Ast/M van Oosterwijck

Could you guess the gender of these artists? Credit: C Peeters/O Beert

Which one of these paintings do you think is worth the most? Credit: E Gonzalès/G Caillebotte

54% of participants favoured the work painted by a woman. Credit: LC Breslau/RL Reid

Is art by women less attractive than art by men? Credit: J Leyster/B Assteyn