Researchers, psychologists, art historians have studied, debated and pondered the correlation between age and artistic creativity throughout history. Pablo Picasso, Mozart, and T.S. Elliot all created some of their most well known art in their twenties, while Cezanne, Hitchcock, and Robert Frost produced some of their most important works in their forties, fifties and later.
The paragraph above comes from a post at creativitypost.com about the relationship between age and creativity. There are good links to a few studies that address this question. The answer: it depends. Both on the field in which one is creating as well as on the artist’s approach. Good food for thought.