What exactly is folk art?

When I was on a tour at the Abby Aldrich Rockefeller Folk Art Museum in Williamsburg, Va., a guide asked me if I knew what folk art is. I’m an antique collector, and I’ve seen a lot of what I thought was folk art, but I don’t have an exact definition.

The guide suggested that folk art is created by artists who have no formal training in art. Consequently, she said, most folk art paintings lack perspective or at best have very primitive use of perspective, such as outlines. As an example, she pointed out the dark spots beneath the children’s hands in one of Edward Hicks’ versions of “The Peaceable Kingdom.” The painting she was talking about, which hangs in the museum, is shown at left.