Outlines four stages of the creative process, according to Graham Wallas: preparation, incubation, inspiration, and evaluation. (Howard, Pierce J., PhD. The Owner’s Manual for the Brain. GA: Bard Press, 2000, pp 601-604)

Describes Graham Wallas’ four-stage process of creativity:

  • Preparation
  • Incubation
  • Illumination
  • Verification

(Herrmann, Ned. The Creative Brain. NC: The Ned Herrmann Group, 1989, 1993, pp 188-189)

Outlines four stages of creative problem solving: Preparation, Incubation, Illumination, and Verification. (Greenwood-Robinson, Maggie, PhD. 20/20 Thinking. NY: Avery, Putnam Special Markets, 2003, pp 366-368)

Four recognized stages of creativity include:

  • Preparation (information is absorbed)
  • Incubation (information coalesces)
  • Illumination (a solution appears)
  • Verification (solution is expressed)

(Schramm, Derek D., PhD. The Creative Brain. p 3-5. CA:Institute for Natural Resources, Health Update. 2007.)