Which of the following is not one of the basic characteristics of attention?

A mother and a father have four children (biological not adopted). All four children have blue eyes. Assuming that brown eyes is a dominant trait and blue eyes is a recessive trait, which of the following statements must be true?

a. The parents may have brown or blue eyes, but both must have at least one allele for blue eyes. b. The parents may have brown or blue eyes, but both must have at least one allele for brown eyes. c. At least one of the parents must have blue eyes. d. Both of the parents must have blue eyes.

Which stage of creative thought produces the "Aha!" experience and is often depicted in cartoons as a light bulb appearing over the thinker's head as the solution to the problem occurs?

a. verification b. incubation c. illumination d. fixation