Why did Picasso's self-portraits change?

The reason why Pablo Picasso's self-portraits changed over time is a matter of debate. On the one hand, the dramatic differences could represent the artist's changing views of himself as he aged. Some experts argue that when viewed within the context of his other works, the changes in the self-portraits reflect the development of his shifting style, which leaned more and more toward the abstract throughout the 20th century. On 1stDibs, find an assortment of Pablo Picasso art.